./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce3fb29712e91707982cc1d90cd5fa002213aad836fd0a7fc53e12556da2c4fe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:00:44,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:00:44,190 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:00:44,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:00:44,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:00:44,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:00:44,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:00:44,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:00:44,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:00:44,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:00:44,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:00:44,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:00:44,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:00:44,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:00:44,242 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:00:44,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:00:44,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:00:44,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:00:44,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:00:44,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:00:44,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:00:44,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:00:44,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:00:44,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:00:44,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:00:44,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:00:44,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:00:44,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:00:44,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:00:44,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:00:44,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:00:44,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:00:44,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:00:44,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:00:44,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:00:44,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:00:44,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:00:44,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:00:44,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:00:44,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:00:44,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:00:44,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:00:44,247 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_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce3fb29712e91707982cc1d90cd5fa002213aad836fd0a7fc53e12556da2c4fe [2024-11-13 13:00:44,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:00:44,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:00:44,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:00:44,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:00:44,574 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:00:44,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c Unable to find full path for "g++" [2024-11-13 13:00:46,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:00:47,176 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:00:47,176 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c [2024-11-13 13:00:47,223 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/data/5baf0dbaa/51638e5249124222a39e7e1fe64480bf/FLAGc9d93bcbf [2024-11-13 13:00:47,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/data/5baf0dbaa/51638e5249124222a39e7e1fe64480bf [2024-11-13 13:00:47,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:00:47,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:00:47,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:00:47,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:00:47,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:00:47,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:00:47" (1/1) ... [2024-11-13 13:00:47,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e8f9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:47, skipping insertion in model container [2024-11-13 13:00:47,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:00:47" (1/1) ... [2024-11-13 13:00:47,393 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:00:47,825 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_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[6450,6463] [2024-11-13 13:00:47,886 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_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[9267,9280] [2024-11-13 13:00:48,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:00:48,895 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:00:48,933 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_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[6450,6463] [2024-11-13 13:00:48,946 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_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[9267,9280] [2024-11-13 13:00:49,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:00:49,456 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:00:49,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49 WrapperNode [2024-11-13 13:00:49,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:00:49,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:00:49,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:00:49,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:00:49,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:49,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,193 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-11-13 13:00:50,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:00:50,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:00:50,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:00:50,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:00:50,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,518 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:00:50,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,698 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:00:50,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:00:50,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:00:50,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:00:50,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (1/1) ... [2024-11-13 13:00:50,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:00:50,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:00:50,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:00:50,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:00:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:00:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:00:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:00:50,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:00:51,153 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:00:51,155 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:00:57,023 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-13 13:00:57,023 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:00:57,069 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:00:57,069 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:00:57,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:00:57 BoogieIcfgContainer [2024-11-13 13:00:57,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:00:57,080 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:00:57,080 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:00:57,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:00:57,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:00:47" (1/3) ... [2024-11-13 13:00:57,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47949f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:00:57, skipping insertion in model container [2024-11-13 13:00:57,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:00:49" (2/3) ... [2024-11-13 13:00:57,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47949f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:00:57, skipping insertion in model container [2024-11-13 13:00:57,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:00:57" (3/3) ... [2024-11-13 13:00:57,089 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c [2024-11-13 13:00:57,105 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:00:57,108 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 13:00:57,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:00:57,199 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;@228ae78c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:00:57,200 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:00:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:00:57,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:00:57,221 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:00:57,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:00:57,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:00:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash 77533588, now seen corresponding path program 1 times [2024-11-13 13:00:57,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:00:57,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989556381] [2024-11-13 13:00:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:00:57,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:00:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:00:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:00:57,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:00:57,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989556381] [2024-11-13 13:00:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989556381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:00:57,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:00:57,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:00:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841919068] [2024-11-13 13:00:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:00:57,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:00:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:00:57,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:00:57,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:00:57,521 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:00:57,642 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-13 13:00:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:00:57,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 13:00:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:00:57,658 INFO L225 Difference]: With dead ends: 1724 [2024-11-13 13:00:57,659 INFO L226 Difference]: Without dead ends: 808 [2024-11-13 13:00:57,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:00:57,666 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:00:57,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:00:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-13 13:00:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-13 13:00:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-13 13:00:57,787 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-13 13:00:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:00:57,791 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-13 13:00:57,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-13 13:00:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:00:57,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:00:57,792 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:00:57,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:00:57,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:00:57,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:00:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash -933583662, now seen corresponding path program 1 times [2024-11-13 13:00:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:00:57,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126095865] [2024-11-13 13:00:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:00:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:00:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:00:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:00:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:00:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126095865] [2024-11-13 13:00:58,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126095865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:00:58,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:00:58,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:00:58,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967961127] [2024-11-13 13:00:58,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:00:58,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:00:58,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:00:58,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:00:58,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:00:58,174 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:58,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:00:58,419 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-13 13:00:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:00:58,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 13:00:58,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:00:58,429 INFO L225 Difference]: With dead ends: 844 [2024-11-13 13:00:58,429 INFO L226 Difference]: Without dead ends: 808 [2024-11-13 13:00:58,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:00:58,432 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:00:58,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:00:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-13 13:00:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-13 13:00:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-13 13:00:58,482 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-13 13:00:58,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:00:58,483 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-13 13:00:58,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-13 13:00:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 13:00:58,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:00:58,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:00:58,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:00:58,485 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:00:58,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:00:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1023304204, now seen corresponding path program 1 times [2024-11-13 13:00:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:00:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940650251] [2024-11-13 13:00:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:00:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:00:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:00:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:00:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:00:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940650251] [2024-11-13 13:00:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940650251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:00:58,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:00:58,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:00:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854044603] [2024-11-13 13:00:58,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:00:58,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:00:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:00:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:00:58,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:00:58,668 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:03,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:03,485 INFO L93 Difference]: Finished difference Result 2312 states and 4384 transitions. [2024-11-13 13:01:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-13 13:01:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:03,492 INFO L225 Difference]: With dead ends: 2312 [2024-11-13 13:01:03,492 INFO L226 Difference]: Without dead ends: 1559 [2024-11-13 13:01:03,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:03,494 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 917 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:03,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 187 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 13:01:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-13 13:01:03,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-13 13:01:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1557 states have (on average 1.8304431599229287) internal successors, (2850), 1558 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2850 transitions. [2024-11-13 13:01:03,547 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2850 transitions. Word has length 24 [2024-11-13 13:01:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:03,547 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2850 transitions. [2024-11-13 13:01:03,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2850 transitions. [2024-11-13 13:01:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 13:01:03,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:03,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:03,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:01:03,549 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:03,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:03,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2056430198, now seen corresponding path program 1 times [2024-11-13 13:01:03,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:03,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664368758] [2024-11-13 13:01:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:03,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:03,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664368758] [2024-11-13 13:01:03,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664368758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:03,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:03,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:01:03,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558980181] [2024-11-13 13:01:03,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:03,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:01:03,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:03,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:01:03,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:01:03,705 INFO L87 Difference]: Start difference. First operand 1559 states and 2850 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:03,858 INFO L93 Difference]: Finished difference Result 1751 states and 3150 transitions. [2024-11-13 13:01:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:01:03,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 13:01:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:03,866 INFO L225 Difference]: With dead ends: 1751 [2024-11-13 13:01:03,866 INFO L226 Difference]: Without dead ends: 1719 [2024-11-13 13:01:03,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:01:03,868 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 4644 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:03,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4644 Valid, 1789 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:01:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-13 13:01:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1589. [2024-11-13 13:01:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.8254568367989918) internal successors, (2897), 1588 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2897 transitions. [2024-11-13 13:01:03,922 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2897 transitions. Word has length 35 [2024-11-13 13:01:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:03,922 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2897 transitions. [2024-11-13 13:01:03,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2897 transitions. [2024-11-13 13:01:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 13:01:03,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:03,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:03,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:01:03,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:03,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1960165254, now seen corresponding path program 1 times [2024-11-13 13:01:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:03,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642251066] [2024-11-13 13:01:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:04,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:04,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642251066] [2024-11-13 13:01:04,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642251066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:04,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:04,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:01:04,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614877980] [2024-11-13 13:01:04,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:04,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:04,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:04,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:04,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:04,052 INFO L87 Difference]: Start difference. First operand 1589 states and 2897 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:04,114 INFO L93 Difference]: Finished difference Result 1702 states and 3072 transitions. [2024-11-13 13:01:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:04,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-13 13:01:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:04,122 INFO L225 Difference]: With dead ends: 1702 [2024-11-13 13:01:04,122 INFO L226 Difference]: Without dead ends: 1640 [2024-11-13 13:01:04,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:04,126 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:04,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-13 13:01:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1636. [2024-11-13 13:01:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8157894736842106) internal successors, (2967), 1635 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2967 transitions. [2024-11-13 13:01:04,182 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2967 transitions. Word has length 37 [2024-11-13 13:01:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:04,183 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2967 transitions. [2024-11-13 13:01:04,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2967 transitions. [2024-11-13 13:01:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 13:01:04,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:04,185 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:04,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:01:04,185 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:04,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:04,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1893671742, now seen corresponding path program 1 times [2024-11-13 13:01:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:04,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439948957] [2024-11-13 13:01:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:04,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:04,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:04,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439948957] [2024-11-13 13:01:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439948957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:01:04,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348456693] [2024-11-13 13:01:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:04,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:01:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:01:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:01:04,438 INFO L87 Difference]: Start difference. First operand 1636 states and 2967 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:04,535 INFO L93 Difference]: Finished difference Result 1747 states and 3135 transitions. [2024-11-13 13:01:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:01:04,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-13 13:01:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:04,545 INFO L225 Difference]: With dead ends: 1747 [2024-11-13 13:01:04,546 INFO L226 Difference]: Without dead ends: 1638 [2024-11-13 13:01:04,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:01:04,549 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:04,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1601 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2024-11-13 13:01:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1636. [2024-11-13 13:01:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8145654834761322) internal successors, (2965), 1635 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2965 transitions. [2024-11-13 13:01:04,610 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2965 transitions. Word has length 37 [2024-11-13 13:01:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:04,610 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2965 transitions. [2024-11-13 13:01:04,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2965 transitions. [2024-11-13 13:01:04,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 13:01:04,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:04,611 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:04,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:01:04,611 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:04,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1010994927, now seen corresponding path program 1 times [2024-11-13 13:01:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:04,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265767560] [2024-11-13 13:01:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:04,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:04,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265767560] [2024-11-13 13:01:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265767560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:04,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:04,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:01:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536830555] [2024-11-13 13:01:04,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:04,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:01:04,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:04,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:01:04,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:01:04,964 INFO L87 Difference]: Start difference. First operand 1636 states and 2965 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:05,059 INFO L93 Difference]: Finished difference Result 1644 states and 2974 transitions. [2024-11-13 13:01:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:01:05,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-13 13:01:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:05,067 INFO L225 Difference]: With dead ends: 1644 [2024-11-13 13:01:05,068 INFO L226 Difference]: Without dead ends: 1642 [2024-11-13 13:01:05,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:01:05,070 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:05,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:05,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-13 13:01:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2024-11-13 13:01:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.8109756097560976) internal successors, (2970), 1641 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2970 transitions. [2024-11-13 13:01:05,116 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2970 transitions. Word has length 38 [2024-11-13 13:01:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:05,117 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 2970 transitions. [2024-11-13 13:01:05,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2970 transitions. [2024-11-13 13:01:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 13:01:05,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:05,118 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:05,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:01:05,118 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:05,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash 936167746, now seen corresponding path program 1 times [2024-11-13 13:01:05,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:05,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590182984] [2024-11-13 13:01:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:05,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:05,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:05,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590182984] [2024-11-13 13:01:05,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590182984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:05,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:05,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:01:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876706000] [2024-11-13 13:01:05,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:05,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:05,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:05,204 INFO L87 Difference]: Start difference. First operand 1642 states and 2970 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:05,239 INFO L93 Difference]: Finished difference Result 1856 states and 3282 transitions. [2024-11-13 13:01:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:05,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 13:01:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:05,246 INFO L225 Difference]: With dead ends: 1856 [2024-11-13 13:01:05,247 INFO L226 Difference]: Without dead ends: 1741 [2024-11-13 13:01:05,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:05,248 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:05,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-13 13:01:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1739. [2024-11-13 13:01:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1737 states have (on average 1.7887161773172136) internal successors, (3107), 1738 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 3107 transitions. [2024-11-13 13:01:05,298 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 3107 transitions. Word has length 39 [2024-11-13 13:01:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:05,298 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 3107 transitions. [2024-11-13 13:01:05,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 3107 transitions. [2024-11-13 13:01:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 13:01:05,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:05,299 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:05,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:01:05,299 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:05,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1577866686, now seen corresponding path program 1 times [2024-11-13 13:01:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:05,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836564636] [2024-11-13 13:01:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836564636] [2024-11-13 13:01:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836564636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:05,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:01:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705313486] [2024-11-13 13:01:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:05,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:05,356 INFO L87 Difference]: Start difference. First operand 1739 states and 3107 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:05,398 INFO L93 Difference]: Finished difference Result 2131 states and 3665 transitions. [2024-11-13 13:01:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 13:01:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:05,407 INFO L225 Difference]: With dead ends: 2131 [2024-11-13 13:01:05,407 INFO L226 Difference]: Without dead ends: 1919 [2024-11-13 13:01:05,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:05,410 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:05,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1595 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2024-11-13 13:01:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2024-11-13 13:01:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.7488250652741515) internal successors, (3349), 1916 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3349 transitions. [2024-11-13 13:01:05,468 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3349 transitions. Word has length 39 [2024-11-13 13:01:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:05,468 INFO L471 AbstractCegarLoop]: Abstraction has 1917 states and 3349 transitions. [2024-11-13 13:01:05,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3349 transitions. [2024-11-13 13:01:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:01:05,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:05,469 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:05,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:01:05,469 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:05,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:05,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1231089507, now seen corresponding path program 1 times [2024-11-13 13:01:05,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:05,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465233329] [2024-11-13 13:01:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:05,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:05,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:05,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465233329] [2024-11-13 13:01:05,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465233329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:05,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:05,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:01:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385209049] [2024-11-13 13:01:05,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:05,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:05,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:05,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:05,536 INFO L87 Difference]: Start difference. First operand 1917 states and 3349 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:05,575 INFO L93 Difference]: Finished difference Result 2340 states and 3955 transitions. [2024-11-13 13:01:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:05,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-13 13:01:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:05,584 INFO L225 Difference]: With dead ends: 2340 [2024-11-13 13:01:05,584 INFO L226 Difference]: Without dead ends: 2105 [2024-11-13 13:01:05,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:05,588 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:05,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:05,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2024-11-13 13:01:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2103. [2024-11-13 13:01:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2101 states have (on average 1.714897667777249) internal successors, (3603), 2102 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3603 transitions. [2024-11-13 13:01:05,651 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3603 transitions. Word has length 41 [2024-11-13 13:01:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:05,652 INFO L471 AbstractCegarLoop]: Abstraction has 2103 states and 3603 transitions. [2024-11-13 13:01:05,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3603 transitions. [2024-11-13 13:01:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 13:01:05,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:05,653 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:05,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:01:05,654 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:05,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1786054963, now seen corresponding path program 1 times [2024-11-13 13:01:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:05,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547308792] [2024-11-13 13:01:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:01:05,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:05,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547308792] [2024-11-13 13:01:05,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547308792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:05,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:05,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:01:05,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851624574] [2024-11-13 13:01:05,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:05,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:01:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:01:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:01:05,819 INFO L87 Difference]: Start difference. First operand 2103 states and 3603 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:06,015 INFO L93 Difference]: Finished difference Result 3959 states and 6183 transitions. [2024-11-13 13:01:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:01:06,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 13:01:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:06,029 INFO L225 Difference]: With dead ends: 3959 [2024-11-13 13:01:06,029 INFO L226 Difference]: Without dead ends: 3385 [2024-11-13 13:01:06,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:01:06,032 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 3054 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3054 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:06,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3054 Valid, 3159 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:01:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-11-13 13:01:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 2675. [2024-11-13 13:01:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2673 states have (on average 1.6427235316124205) internal successors, (4391), 2674 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4391 transitions. [2024-11-13 13:01:06,149 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4391 transitions. Word has length 54 [2024-11-13 13:01:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:06,150 INFO L471 AbstractCegarLoop]: Abstraction has 2675 states and 4391 transitions. [2024-11-13 13:01:06,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4391 transitions. [2024-11-13 13:01:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 13:01:06,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:06,155 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:06,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:01:06,156 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:06,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -727979469, now seen corresponding path program 1 times [2024-11-13 13:01:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128074557] [2024-11-13 13:01:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:01:06,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128074557] [2024-11-13 13:01:06,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128074557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:06,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:06,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:01:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614299046] [2024-11-13 13:01:06,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:06,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:01:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:01:06,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:01:06,372 INFO L87 Difference]: Start difference. First operand 2675 states and 4391 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:06,570 INFO L93 Difference]: Finished difference Result 4531 states and 6971 transitions. [2024-11-13 13:01:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:01:06,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 13:01:06,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:06,584 INFO L225 Difference]: With dead ends: 4531 [2024-11-13 13:01:06,584 INFO L226 Difference]: Without dead ends: 3957 [2024-11-13 13:01:06,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:01:06,587 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 3055 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:06,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3055 Valid, 3156 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:01:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2024-11-13 13:01:06,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3535. [2024-11-13 13:01:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3533 states have (on average 1.5745825077837532) internal successors, (5563), 3534 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5563 transitions. [2024-11-13 13:01:06,703 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5563 transitions. Word has length 54 [2024-11-13 13:01:06,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:06,704 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 5563 transitions. [2024-11-13 13:01:06,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5563 transitions. [2024-11-13 13:01:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 13:01:06,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:06,706 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:06,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:01:06,706 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:06,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1357660715, now seen corresponding path program 1 times [2024-11-13 13:01:06,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:06,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813465001] [2024-11-13 13:01:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:06,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:06,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813465001] [2024-11-13 13:01:06,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813465001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:06,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:06,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:01:06,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075009446] [2024-11-13 13:01:06,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:06,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:06,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:06,816 INFO L87 Difference]: Start difference. First operand 3535 states and 5563 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:06,871 INFO L93 Difference]: Finished difference Result 5011 states and 7626 transitions. [2024-11-13 13:01:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:06,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-13 13:01:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:06,880 INFO L225 Difference]: With dead ends: 5011 [2024-11-13 13:01:06,880 INFO L226 Difference]: Without dead ends: 3005 [2024-11-13 13:01:06,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:06,884 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:06,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-13 13:01:06,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 3003. [2024-11-13 13:01:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3001 states have (on average 1.611129623458847) internal successors, (4835), 3002 states have internal predecessors, (4835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4835 transitions. [2024-11-13 13:01:06,972 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4835 transitions. Word has length 56 [2024-11-13 13:01:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:06,973 INFO L471 AbstractCegarLoop]: Abstraction has 3003 states and 4835 transitions. [2024-11-13 13:01:06,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4835 transitions. [2024-11-13 13:01:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 13:01:06,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:06,974 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:06,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:01:06,974 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:06,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash -533260210, now seen corresponding path program 1 times [2024-11-13 13:01:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866077573] [2024-11-13 13:01:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:06,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:01:07,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:07,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866077573] [2024-11-13 13:01:07,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866077573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:07,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:01:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956017956] [2024-11-13 13:01:07,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:07,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:01:07,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:07,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:01:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:01:07,160 INFO L87 Difference]: Start difference. First operand 3003 states and 4835 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:07,289 INFO L93 Difference]: Finished difference Result 4259 states and 6591 transitions. [2024-11-13 13:01:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:01:07,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-13 13:01:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:07,305 INFO L225 Difference]: With dead ends: 4259 [2024-11-13 13:01:07,308 INFO L226 Difference]: Without dead ends: 3841 [2024-11-13 13:01:07,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:01:07,310 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 3049 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:07,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3182 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:01:07,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2024-11-13 13:01:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3419. [2024-11-13 13:01:07,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3417 states have (on average 1.5835528241147205) internal successors, (5411), 3418 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5411 transitions. [2024-11-13 13:01:07,420 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5411 transitions. Word has length 56 [2024-11-13 13:01:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:07,421 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5411 transitions. [2024-11-13 13:01:07,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5411 transitions. [2024-11-13 13:01:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 13:01:07,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:07,423 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:07,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:01:07,424 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:07,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash 639957204, now seen corresponding path program 1 times [2024-11-13 13:01:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:07,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086615174] [2024-11-13 13:01:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:07,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086615174] [2024-11-13 13:01:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086615174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:07,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:07,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:01:07,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982028458] [2024-11-13 13:01:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:07,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:07,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:07,532 INFO L87 Difference]: Start difference. First operand 3419 states and 5411 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:07,576 INFO L93 Difference]: Finished difference Result 4359 states and 6709 transitions. [2024-11-13 13:01:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:07,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-13 13:01:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:07,583 INFO L225 Difference]: With dead ends: 4359 [2024-11-13 13:01:07,584 INFO L226 Difference]: Without dead ends: 2485 [2024-11-13 13:01:07,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:07,587 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:07,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2024-11-13 13:01:07,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2024-11-13 13:01:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.6513502619911327) internal successors, (4097), 2482 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 4097 transitions. [2024-11-13 13:01:07,649 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 4097 transitions. Word has length 57 [2024-11-13 13:01:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:07,650 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 4097 transitions. [2024-11-13 13:01:07,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 4097 transitions. [2024-11-13 13:01:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 13:01:07,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:07,651 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:07,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:01:07,651 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:07,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash -931964666, now seen corresponding path program 1 times [2024-11-13 13:01:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058593535] [2024-11-13 13:01:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:07,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:07,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058593535] [2024-11-13 13:01:07,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058593535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:07,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:07,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:01:07,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22048939] [2024-11-13 13:01:07,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:07,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:07,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:07,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:07,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:07,756 INFO L87 Difference]: Start difference. First operand 2483 states and 4097 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:07,793 INFO L93 Difference]: Finished difference Result 2955 states and 4738 transitions. [2024-11-13 13:01:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:07,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-13 13:01:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:07,799 INFO L225 Difference]: With dead ends: 2955 [2024-11-13 13:01:07,799 INFO L226 Difference]: Without dead ends: 2017 [2024-11-13 13:01:07,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:07,802 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:07,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:01:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-13 13:01:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2015. [2024-11-13 13:01:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2013 states have (on average 1.7133631395926479) internal successors, (3449), 2014 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3449 transitions. [2024-11-13 13:01:07,937 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3449 transitions. Word has length 59 [2024-11-13 13:01:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:07,938 INFO L471 AbstractCegarLoop]: Abstraction has 2015 states and 3449 transitions. [2024-11-13 13:01:07,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3449 transitions. [2024-11-13 13:01:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 13:01:07,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:07,940 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:07,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:01:07,940 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:07,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:07,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1652101192, now seen corresponding path program 1 times [2024-11-13 13:01:07,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:07,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725518098] [2024-11-13 13:01:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:07,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:10,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:10,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725518098] [2024-11-13 13:01:10,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725518098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213006280] [2024-11-13 13:01:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:10,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:10,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:10,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:10,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:01:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:10,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:01:10,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:01:10,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:01:10,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213006280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:10,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:10,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-13 13:01:10,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135835166] [2024-11-13 13:01:10,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:10,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:01:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:01:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:01:10,756 INFO L87 Difference]: Start difference. First operand 2015 states and 3449 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:13,499 INFO L93 Difference]: Finished difference Result 4416 states and 6623 transitions. [2024-11-13 13:01:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 13:01:13,500 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-13 13:01:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:13,509 INFO L225 Difference]: With dead ends: 4416 [2024-11-13 13:01:13,509 INFO L226 Difference]: Without dead ends: 3946 [2024-11-13 13:01:13,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 13:01:13,512 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 17260 mSDsluCounter, 7676 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17260 SdHoareTripleChecker+Valid, 9175 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:13,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17260 Valid, 9175 Invalid, 699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:01:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2024-11-13 13:01:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3912. [2024-11-13 13:01:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3910 states have (on average 1.481841432225064) internal successors, (5794), 3911 states have internal predecessors, (5794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5794 transitions. [2024-11-13 13:01:13,636 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5794 transitions. Word has length 61 [2024-11-13 13:01:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:13,637 INFO L471 AbstractCegarLoop]: Abstraction has 3912 states and 5794 transitions. [2024-11-13 13:01:13,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5794 transitions. [2024-11-13 13:01:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 13:01:13,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:13,638 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:13,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:01:13,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:01:13,841 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:13,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1556370466, now seen corresponding path program 1 times [2024-11-13 13:01:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:13,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3908747] [2024-11-13 13:01:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:13,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3908747] [2024-11-13 13:01:16,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3908747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761435993] [2024-11-13 13:01:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:16,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:16,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:01:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:16,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:01:16,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:17,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:18,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761435993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:18,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:18,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-13 13:01:18,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540800566] [2024-11-13 13:01:18,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:18,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:01:18,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:01:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:01:18,244 INFO L87 Difference]: Start difference. First operand 3912 states and 5794 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:19,045 INFO L93 Difference]: Finished difference Result 8181 states and 11209 transitions. [2024-11-13 13:01:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:01:19,046 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-13 13:01:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:19,060 INFO L225 Difference]: With dead ends: 8181 [2024-11-13 13:01:19,060 INFO L226 Difference]: Without dead ends: 6222 [2024-11-13 13:01:19,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 13:01:19,065 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 10631 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10631 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:19,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10631 Valid, 4748 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:01:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2024-11-13 13:01:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 6156. [2024-11-13 13:01:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6154 states have (on average 1.3865778355541112) internal successors, (8533), 6155 states have internal predecessors, (8533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 8533 transitions. [2024-11-13 13:01:19,303 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 8533 transitions. Word has length 62 [2024-11-13 13:01:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:19,303 INFO L471 AbstractCegarLoop]: Abstraction has 6156 states and 8533 transitions. [2024-11-13 13:01:19,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:19,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 8533 transitions. [2024-11-13 13:01:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 13:01:19,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:19,305 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:19,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:01:19,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:01:19,506 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:19,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2050459244, now seen corresponding path program 1 times [2024-11-13 13:01:19,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:19,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332975988] [2024-11-13 13:01:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:19,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332975988] [2024-11-13 13:01:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332975988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20966769] [2024-11-13 13:01:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:19,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:19,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:19,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:19,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:01:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:20,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:01:20,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:20,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:21,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20966769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:21,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:21,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-13 13:01:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412171369] [2024-11-13 13:01:21,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:21,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 13:01:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:21,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 13:01:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:01:22,000 INFO L87 Difference]: Start difference. First operand 6156 states and 8533 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:25,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:25,829 INFO L93 Difference]: Finished difference Result 16403 states and 21329 transitions. [2024-11-13 13:01:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 13:01:25,830 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-13 13:01:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:25,856 INFO L225 Difference]: With dead ends: 16403 [2024-11-13 13:01:25,856 INFO L226 Difference]: Without dead ends: 12305 [2024-11-13 13:01:25,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-13 13:01:25,863 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 14006 mSDsluCounter, 15506 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14006 SdHoareTripleChecker+Valid, 17014 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:25,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14006 Valid, 17014 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 13:01:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states. [2024-11-13 13:01:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 8355. [2024-11-13 13:01:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 8353 states have (on average 1.338680713516102) internal successors, (11182), 8354 states have internal predecessors, (11182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 11182 transitions. [2024-11-13 13:01:26,263 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 11182 transitions. Word has length 62 [2024-11-13 13:01:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:26,266 INFO L471 AbstractCegarLoop]: Abstraction has 8355 states and 11182 transitions. [2024-11-13 13:01:26,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 11182 transitions. [2024-11-13 13:01:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 13:01:26,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:26,267 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:26,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:01:26,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:26,469 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:26,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 442628388, now seen corresponding path program 1 times [2024-11-13 13:01:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:26,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672953058] [2024-11-13 13:01:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:26,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:27,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:27,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672953058] [2024-11-13 13:01:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672953058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903773406] [2024-11-13 13:01:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:27,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:27,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:27,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:27,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:01:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:27,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 13:01:27,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:28,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:29,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903773406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:29,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:29,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-13 13:01:29,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463063877] [2024-11-13 13:01:29,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:29,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 13:01:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 13:01:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:01:29,647 INFO L87 Difference]: Start difference. First operand 8355 states and 11182 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:31,573 INFO L93 Difference]: Finished difference Result 17081 states and 22024 transitions. [2024-11-13 13:01:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 13:01:31,573 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-13 13:01:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:31,593 INFO L225 Difference]: With dead ends: 17081 [2024-11-13 13:01:31,593 INFO L226 Difference]: Without dead ends: 11437 [2024-11-13 13:01:31,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 13:01:31,602 INFO L432 NwaCegarLoop]: 1514 mSDtfsCounter, 23058 mSDsluCounter, 6516 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23058 SdHoareTripleChecker+Valid, 8030 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:31,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23058 Valid, 8030 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:01:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11437 states. [2024-11-13 13:01:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11437 to 10831. [2024-11-13 13:01:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10831 states, 10829 states have (on average 1.3042755563763968) internal successors, (14124), 10830 states have internal predecessors, (14124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 14124 transitions. [2024-11-13 13:01:32,138 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 14124 transitions. Word has length 63 [2024-11-13 13:01:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:32,139 INFO L471 AbstractCegarLoop]: Abstraction has 10831 states and 14124 transitions. [2024-11-13 13:01:32,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 14124 transitions. [2024-11-13 13:01:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 13:01:32,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:32,140 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:32,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:01:32,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:32,348 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:32,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1421767062, now seen corresponding path program 1 times [2024-11-13 13:01:32,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:32,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497348637] [2024-11-13 13:01:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:32,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:34,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497348637] [2024-11-13 13:01:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497348637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631922126] [2024-11-13 13:01:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:34,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:34,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:34,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:34,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:01:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:34,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 13:01:34,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:38,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:40,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631922126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:40,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:40,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-13 13:01:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141491662] [2024-11-13 13:01:40,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:40,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 13:01:40,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 13:01:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 13:01:40,049 INFO L87 Difference]: Start difference. First operand 10831 states and 14124 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:06,135 INFO L93 Difference]: Finished difference Result 21138 states and 26707 transitions. [2024-11-13 13:02:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-13 13:02:06,136 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-13 13:02:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:06,165 INFO L225 Difference]: With dead ends: 21138 [2024-11-13 13:02:06,165 INFO L226 Difference]: Without dead ends: 17394 [2024-11-13 13:02:06,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=4194, Invalid=16398, Unknown=0, NotChecked=0, Total=20592 [2024-11-13 13:02:06,173 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 26465 mSDsluCounter, 16423 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26465 SdHoareTripleChecker+Valid, 17965 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:06,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26465 Valid, 17965 Invalid, 2360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 13:02:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17394 states. [2024-11-13 13:02:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17394 to 13947. [2024-11-13 13:02:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13947 states, 13945 states have (on average 1.289709573323772) internal successors, (17985), 13946 states have internal predecessors, (17985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13947 states to 13947 states and 17985 transitions. [2024-11-13 13:02:07,044 INFO L78 Accepts]: Start accepts. Automaton has 13947 states and 17985 transitions. Word has length 63 [2024-11-13 13:02:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:07,044 INFO L471 AbstractCegarLoop]: Abstraction has 13947 states and 17985 transitions. [2024-11-13 13:02:07,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 13947 states and 17985 transitions. [2024-11-13 13:02:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 13:02:07,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:07,045 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:07,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:02:07,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 13:02:07,246 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:07,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2102838268, now seen corresponding path program 1 times [2024-11-13 13:02:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918846924] [2024-11-13 13:02:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:08,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:08,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918846924] [2024-11-13 13:02:08,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918846924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:02:08,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394051593] [2024-11-13 13:02:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:08,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:02:08,389 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:02:08,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:02:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:08,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:02:08,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:02:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:09,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:02:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:10,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394051593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:02:10,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:02:10,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-13 13:02:10,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578404920] [2024-11-13 13:02:10,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:02:10,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:02:10,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:10,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:02:10,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:02:10,665 INFO L87 Difference]: Start difference. First operand 13947 states and 17985 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:14,324 INFO L93 Difference]: Finished difference Result 18807 states and 23911 transitions. [2024-11-13 13:02:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 13:02:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-13 13:02:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:14,347 INFO L225 Difference]: With dead ends: 18807 [2024-11-13 13:02:14,347 INFO L226 Difference]: Without dead ends: 13060 [2024-11-13 13:02:14,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 13:02:14,357 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 14417 mSDsluCounter, 15499 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14417 SdHoareTripleChecker+Valid, 17016 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:14,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14417 Valid, 17016 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:02:14,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13060 states. [2024-11-13 13:02:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13060 to 10942. [2024-11-13 13:02:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10942 states, 10940 states have (on average 1.3036563071297989) internal successors, (14262), 10941 states have internal predecessors, (14262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10942 states to 10942 states and 14262 transitions. [2024-11-13 13:02:15,026 INFO L78 Accepts]: Start accepts. Automaton has 10942 states and 14262 transitions. Word has length 64 [2024-11-13 13:02:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:15,026 INFO L471 AbstractCegarLoop]: Abstraction has 10942 states and 14262 transitions. [2024-11-13 13:02:15,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 10942 states and 14262 transitions. [2024-11-13 13:02:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:02:15,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:15,027 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:15,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:02:15,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:15,232 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:15,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1223688180, now seen corresponding path program 1 times [2024-11-13 13:02:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:15,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498847350] [2024-11-13 13:02:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:15,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:17,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498847350] [2024-11-13 13:02:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498847350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:02:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135458825] [2024-11-13 13:02:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:17,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:02:17,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:02:17,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:02:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:17,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:02:17,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:02:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:18,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:02:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135458825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:02:19,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:02:19,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-13 13:02:19,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183833821] [2024-11-13 13:02:19,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:02:19,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 13:02:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 13:02:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 13:02:19,511 INFO L87 Difference]: Start difference. First operand 10942 states and 14262 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:30,213 INFO L93 Difference]: Finished difference Result 17682 states and 22469 transitions. [2024-11-13 13:02:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-13 13:02:30,213 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-13 13:02:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:30,234 INFO L225 Difference]: With dead ends: 17682 [2024-11-13 13:02:30,234 INFO L226 Difference]: Without dead ends: 12903 [2024-11-13 13:02:30,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2078, Invalid=7822, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 13:02:30,241 INFO L432 NwaCegarLoop]: 1558 mSDtfsCounter, 15123 mSDsluCounter, 31540 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15123 SdHoareTripleChecker+Valid, 33098 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:30,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15123 Valid, 33098 Invalid, 2524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 13:02:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12903 states. [2024-11-13 13:02:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12903 to 8791. [2024-11-13 13:02:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8791 states, 8789 states have (on average 1.3241551939924907) internal successors, (11638), 8790 states have internal predecessors, (11638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11638 transitions. [2024-11-13 13:02:30,827 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11638 transitions. Word has length 65 [2024-11-13 13:02:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:30,828 INFO L471 AbstractCegarLoop]: Abstraction has 8791 states and 11638 transitions. [2024-11-13 13:02:30,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11638 transitions. [2024-11-13 13:02:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 13:02:30,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:30,829 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:30,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:02:31,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:31,029 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:31,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:31,030 INFO L85 PathProgramCache]: Analyzing trace with hash -505544266, now seen corresponding path program 1 times [2024-11-13 13:02:31,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:31,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507960293] [2024-11-13 13:02:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:31,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:31,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507960293] [2024-11-13 13:02:31,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507960293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:02:31,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:02:31,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:02:31,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990237785] [2024-11-13 13:02:31,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:02:31,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:02:31,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:31,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:02:31,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:02:31,098 INFO L87 Difference]: Start difference. First operand 8791 states and 11638 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:35,095 INFO L93 Difference]: Finished difference Result 11046 states and 15753 transitions. [2024-11-13 13:02:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:02:35,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-13 13:02:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:35,105 INFO L225 Difference]: With dead ends: 11046 [2024-11-13 13:02:35,105 INFO L226 Difference]: Without dead ends: 9542 [2024-11-13 13:02:35,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:02:35,109 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 851 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:35,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 520 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-13 13:02:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9542 states. [2024-11-13 13:02:35,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9542 to 9542. [2024-11-13 13:02:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9540 states have (on average 1.269706498951782) internal successors, (12113), 9541 states have internal predecessors, (12113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 12113 transitions. [2024-11-13 13:02:35,576 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 12113 transitions. Word has length 93 [2024-11-13 13:02:35,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:35,576 INFO L471 AbstractCegarLoop]: Abstraction has 9542 states and 12113 transitions. [2024-11-13 13:02:35,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:35,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 12113 transitions. [2024-11-13 13:02:35,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 13:02:35,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:35,578 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:35,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 13:02:35,578 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:35,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:35,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1501528581, now seen corresponding path program 1 times [2024-11-13 13:02:35,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:35,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086417333] [2024-11-13 13:02:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 13:02:35,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:35,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086417333] [2024-11-13 13:02:35,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086417333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:02:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:02:35,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:02:35,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956321115] [2024-11-13 13:02:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:02:35,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:02:35,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:02:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:02:35,655 INFO L87 Difference]: Start difference. First operand 9542 states and 12113 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:40,021 INFO L93 Difference]: Finished difference Result 14050 states and 18614 transitions. [2024-11-13 13:02:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:02:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-13 13:02:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:40,031 INFO L225 Difference]: With dead ends: 14050 [2024-11-13 13:02:40,031 INFO L226 Difference]: Without dead ends: 11795 [2024-11-13 13:02:40,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:02:40,034 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 797 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:40,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 690 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 13:02:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11795 states. [2024-11-13 13:02:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11795 to 11795. [2024-11-13 13:02:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11795 states, 11793 states have (on average 1.2456542016450436) internal successors, (14690), 11794 states have internal predecessors, (14690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11795 states to 11795 states and 14690 transitions. [2024-11-13 13:02:40,525 INFO L78 Accepts]: Start accepts. Automaton has 11795 states and 14690 transitions. Word has length 95 [2024-11-13 13:02:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:40,526 INFO L471 AbstractCegarLoop]: Abstraction has 11795 states and 14690 transitions. [2024-11-13 13:02:40,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 11795 states and 14690 transitions. [2024-11-13 13:02:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 13:02:40,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:40,528 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:40,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 13:02:40,529 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:40,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:40,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1455592758, now seen corresponding path program 1 times [2024-11-13 13:02:40,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:40,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176225219] [2024-11-13 13:02:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:40,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:40,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:40,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176225219] [2024-11-13 13:02:40,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176225219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:02:40,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:02:40,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:02:40,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723243658] [2024-11-13 13:02:40,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:02:40,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:02:40,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:40,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:02:40,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:02:40,683 INFO L87 Difference]: Start difference. First operand 11795 states and 14690 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:46,416 INFO L93 Difference]: Finished difference Result 21560 states and 27144 transitions. [2024-11-13 13:02:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:02:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-13 13:02:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:46,428 INFO L225 Difference]: With dead ends: 21560 [2024-11-13 13:02:46,428 INFO L226 Difference]: Without dead ends: 17052 [2024-11-13 13:02:46,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:02:46,432 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 2411 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4542 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 5247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 4542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:46,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 375 Invalid, 5247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 4542 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-13 13:02:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17052 states. [2024-11-13 13:02:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17052 to 17052. [2024-11-13 13:02:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17052 states, 17050 states have (on average 1.2255131964809385) internal successors, (20895), 17051 states have internal predecessors, (20895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17052 states to 17052 states and 20895 transitions. [2024-11-13 13:02:46,980 INFO L78 Accepts]: Start accepts. Automaton has 17052 states and 20895 transitions. Word has length 101 [2024-11-13 13:02:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:46,981 INFO L471 AbstractCegarLoop]: Abstraction has 17052 states and 20895 transitions. [2024-11-13 13:02:46,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 17052 states and 20895 transitions. [2024-11-13 13:02:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 13:02:46,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:46,983 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:46,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-13 13:02:46,983 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:46,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash 367715101, now seen corresponding path program 1 times [2024-11-13 13:02:46,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:46,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772076902] [2024-11-13 13:02:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:48,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:48,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772076902] [2024-11-13 13:02:48,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772076902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:02:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430697385] [2024-11-13 13:02:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:48,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:48,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:02:48,062 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:02:48,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:02:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:48,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:02:48,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:02:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:48,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:02:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:50,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430697385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:02:50,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:02:50,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-13 13:02:50,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907519217] [2024-11-13 13:02:50,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:02:50,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 13:02:50,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:50,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 13:02:50,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:02:50,748 INFO L87 Difference]: Start difference. First operand 17052 states and 20895 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:51,774 INFO L93 Difference]: Finished difference Result 21968 states and 26951 transitions. [2024-11-13 13:02:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:02:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-13 13:02:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:51,788 INFO L225 Difference]: With dead ends: 21968 [2024-11-13 13:02:51,788 INFO L226 Difference]: Without dead ends: 17372 [2024-11-13 13:02:51,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:02:51,794 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 16399 mSDsluCounter, 12155 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16399 SdHoareTripleChecker+Valid, 13670 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:51,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16399 Valid, 13670 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:02:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17372 states. [2024-11-13 13:02:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17372 to 17052. [2024-11-13 13:02:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17052 states, 17050 states have (on average 1.2207038123167155) internal successors, (20813), 17051 states have internal predecessors, (20813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17052 states to 17052 states and 20813 transitions. [2024-11-13 13:02:52,371 INFO L78 Accepts]: Start accepts. Automaton has 17052 states and 20813 transitions. Word has length 103 [2024-11-13 13:02:52,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:52,371 INFO L471 AbstractCegarLoop]: Abstraction has 17052 states and 20813 transitions. [2024-11-13 13:02:52,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:52,371 INFO L276 IsEmpty]: Start isEmpty. Operand 17052 states and 20813 transitions. [2024-11-13 13:02:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 13:02:52,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:52,373 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:52,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:02:52,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 13:02:52,574 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:52,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1055852687, now seen corresponding path program 1 times [2024-11-13 13:02:52,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:52,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497420880] [2024-11-13 13:02:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:52,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:53,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:53,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497420880] [2024-11-13 13:02:53,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497420880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:02:53,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005413597] [2024-11-13 13:02:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:53,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:02:53,283 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:02:53,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:02:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:53,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 13:02:53,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:02:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:54,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:02:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005413597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:02:55,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:02:55,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-13 13:02:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639190926] [2024-11-13 13:02:55,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:02:55,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 13:02:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 13:02:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:02:55,856 INFO L87 Difference]: Start difference. First operand 17052 states and 20813 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:57,318 INFO L93 Difference]: Finished difference Result 21317 states and 26003 transitions. [2024-11-13 13:02:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:02:57,318 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-13 13:02:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:57,337 INFO L225 Difference]: With dead ends: 21317 [2024-11-13 13:02:57,338 INFO L226 Difference]: Without dead ends: 17138 [2024-11-13 13:02:57,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 13:02:57,346 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 16211 mSDsluCounter, 10714 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16211 SdHoareTripleChecker+Valid, 12229 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:57,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16211 Valid, 12229 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:02:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2024-11-13 13:02:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 17052. [2024-11-13 13:02:58,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17052 states, 17050 states have (on average 1.2174780058651027) internal successors, (20758), 17051 states have internal predecessors, (20758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17052 states to 17052 states and 20758 transitions. [2024-11-13 13:02:58,131 INFO L78 Accepts]: Start accepts. Automaton has 17052 states and 20758 transitions. Word has length 103 [2024-11-13 13:02:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:58,131 INFO L471 AbstractCegarLoop]: Abstraction has 17052 states and 20758 transitions. [2024-11-13 13:02:58,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:02:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 17052 states and 20758 transitions. [2024-11-13 13:02:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 13:02:58,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:58,132 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:58,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:02:58,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 13:02:58,333 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:58,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash 687432479, now seen corresponding path program 1 times [2024-11-13 13:02:58,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:58,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543785624] [2024-11-13 13:02:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:58,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:02:59,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543785624] [2024-11-13 13:02:59,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543785624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:02:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401085312] [2024-11-13 13:02:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:59,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:02:59,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:02:59,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:02:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:59,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 13:02:59,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:03:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:03:01,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:03:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:03:06,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401085312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:03:06,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:03:06,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-13 13:03:06,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272006512] [2024-11-13 13:03:06,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:03:06,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-13 13:03:06,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:03:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-13 13:03:06,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 13:03:06,787 INFO L87 Difference]: Start difference. First operand 17052 states and 20758 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:03:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:03:35,651 INFO L93 Difference]: Finished difference Result 23150 states and 28021 transitions. [2024-11-13 13:03:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-13 13:03:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-13 13:03:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:03:35,668 INFO L225 Difference]: With dead ends: 23150 [2024-11-13 13:03:35,668 INFO L226 Difference]: Without dead ends: 19234 [2024-11-13 13:03:35,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9886 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=5256, Invalid=28416, Unknown=0, NotChecked=0, Total=33672 [2024-11-13 13:03:35,680 INFO L432 NwaCegarLoop]: 1686 mSDtfsCounter, 25713 mSDsluCounter, 35526 mSDsCounter, 0 mSdLazyCounter, 4204 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25713 SdHoareTripleChecker+Valid, 37212 SdHoareTripleChecker+Invalid, 4447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:03:35,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25713 Valid, 37212 Invalid, 4447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [243 Valid, 4204 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 13:03:35,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19234 states. [2024-11-13 13:03:36,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19234 to 16696. [2024-11-13 13:03:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16696 states, 16694 states have (on average 1.2151072241523901) internal successors, (20285), 16695 states have internal predecessors, (20285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:03:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16696 states to 16696 states and 20285 transitions. [2024-11-13 13:03:36,418 INFO L78 Accepts]: Start accepts. Automaton has 16696 states and 20285 transitions. Word has length 104 [2024-11-13 13:03:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:03:36,418 INFO L471 AbstractCegarLoop]: Abstraction has 16696 states and 20285 transitions. [2024-11-13 13:03:36,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:03:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 16696 states and 20285 transitions. [2024-11-13 13:03:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-13 13:03:36,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:03:36,420 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:03:36,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:03:36,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 13:03:36,620 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:03:36,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:03:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1946781237, now seen corresponding path program 1 times [2024-11-13 13:03:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:03:36,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778513784] [2024-11-13 13:03:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:03:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:03:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:03:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:03:38,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:03:38,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778513784] [2024-11-13 13:03:38,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778513784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:03:38,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115770284] [2024-11-13 13:03:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:03:38,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:03:38,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:03:38,036 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:03:38,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:03:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:03:38,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 13:03:38,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:03:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:03:40,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:03:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:03:44,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115770284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:03:44,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:03:44,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 54 [2024-11-13 13:03:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288747351] [2024-11-13 13:03:44,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:03:44,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 13:03:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:03:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 13:03:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2630, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 13:03:44,361 INFO L87 Difference]: Start difference. First operand 16696 states and 20285 transitions. Second operand has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:04:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:04:31,592 INFO L93 Difference]: Finished difference Result 25592 states and 30953 transitions. [2024-11-13 13:04:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-11-13 13:04:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-13 13:04:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:04:31,606 INFO L225 Difference]: With dead ends: 25592 [2024-11-13 13:04:31,606 INFO L226 Difference]: Without dead ends: 21528 [2024-11-13 13:04:31,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=8347, Invalid=42053, Unknown=0, NotChecked=0, Total=50400 [2024-11-13 13:04:31,613 INFO L432 NwaCegarLoop]: 1611 mSDtfsCounter, 28692 mSDsluCounter, 41988 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28692 SdHoareTripleChecker+Valid, 43599 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:04:31,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28692 Valid, 43599 Invalid, 3392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [172 Valid, 3220 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 13:04:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21528 states. [2024-11-13 13:04:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21528 to 21244. [2024-11-13 13:04:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21244 states, 21242 states have (on average 1.210290933057151) internal successors, (25709), 21243 states have internal predecessors, (25709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:04:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21244 states to 21244 states and 25709 transitions. [2024-11-13 13:04:32,650 INFO L78 Accepts]: Start accepts. Automaton has 21244 states and 25709 transitions. Word has length 105 [2024-11-13 13:04:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:04:32,650 INFO L471 AbstractCegarLoop]: Abstraction has 21244 states and 25709 transitions. [2024-11-13 13:04:32,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:04:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand 21244 states and 25709 transitions. [2024-11-13 13:04:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 13:04:32,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:04:32,652 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:04:32,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:04:32,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:04:32,853 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:04:32,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:04:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1437263537, now seen corresponding path program 1 times [2024-11-13 13:04:32,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:04:32,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895981335] [2024-11-13 13:04:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:04:32,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:04:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:04:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:04:34,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:04:34,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895981335] [2024-11-13 13:04:34,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895981335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:04:34,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672268712] [2024-11-13 13:04:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:04:34,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:04:34,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:04:34,621 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:04:34,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:04:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:04:34,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 13:04:34,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:04:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:04:38,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:04:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:04:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672268712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:04:48,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:04:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 76 [2024-11-13 13:04:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015765394] [2024-11-13 13:04:48,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:04:48,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-13 13:04:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:04:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-13 13:04:48,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=5141, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 13:04:48,430 INFO L87 Difference]: Start difference. First operand 21244 states and 25709 transitions. Second operand has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:06:02,735 INFO L93 Difference]: Finished difference Result 36117 states and 43549 transitions. [2024-11-13 13:06:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-13 13:06:02,736 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-13 13:06:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:06:02,754 INFO L225 Difference]: With dead ends: 36117 [2024-11-13 13:06:02,755 INFO L226 Difference]: Without dead ends: 26951 [2024-11-13 13:06:02,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 72.1s TimeCoverageRelationStatistics Valid=9117, Invalid=45405, Unknown=0, NotChecked=0, Total=54522 [2024-11-13 13:06:02,762 INFO L432 NwaCegarLoop]: 1646 mSDtfsCounter, 21803 mSDsluCounter, 40364 mSDsCounter, 0 mSdLazyCounter, 4261 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21803 SdHoareTripleChecker+Valid, 42010 SdHoareTripleChecker+Invalid, 4435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 4261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:06:02,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21803 Valid, 42010 Invalid, 4435 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [174 Valid, 4261 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-13 13:06:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26951 states. [2024-11-13 13:06:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26951 to 23605. [2024-11-13 13:06:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23605 states, 23603 states have (on average 1.2083209761470999) internal successors, (28520), 23604 states have internal predecessors, (28520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23605 states to 23605 states and 28520 transitions. [2024-11-13 13:06:04,379 INFO L78 Accepts]: Start accepts. Automaton has 23605 states and 28520 transitions. Word has length 106 [2024-11-13 13:06:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:06:04,379 INFO L471 AbstractCegarLoop]: Abstraction has 23605 states and 28520 transitions. [2024-11-13 13:06:04,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 23605 states and 28520 transitions. [2024-11-13 13:06:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 13:06:04,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:06:04,381 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:06:04,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:06:04,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 13:06:04,581 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:06:04,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:06:04,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1844025737, now seen corresponding path program 1 times [2024-11-13 13:06:04,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:06:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421472084] [2024-11-13 13:06:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:06:04,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:06:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:06:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:05,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:06:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421472084] [2024-11-13 13:06:05,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421472084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:06:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469200710] [2024-11-13 13:06:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:06:05,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:06:05,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:06:05,267 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:06:05,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:06:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:06:05,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 13:06:05,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:06:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:07,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:06:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:10,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469200710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:06:10,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:06:10,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-11-13 13:06:10,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369293519] [2024-11-13 13:06:10,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:06:10,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 13:06:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:06:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 13:06:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 13:06:10,705 INFO L87 Difference]: Start difference. First operand 23605 states and 28520 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:06:17,139 INFO L93 Difference]: Finished difference Result 44714 states and 53871 transitions. [2024-11-13 13:06:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 13:06:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-13 13:06:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:06:17,163 INFO L225 Difference]: With dead ends: 44714 [2024-11-13 13:06:17,163 INFO L226 Difference]: Without dead ends: 33521 [2024-11-13 13:06:17,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1232, Invalid=5088, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 13:06:17,171 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 25909 mSDsluCounter, 20711 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25909 SdHoareTripleChecker+Valid, 22284 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:06:17,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25909 Valid, 22284 Invalid, 1419 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:06:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33521 states. [2024-11-13 13:06:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33521 to 31189. [2024-11-13 13:06:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31189 states, 31187 states have (on average 1.202808862667137) internal successors, (37512), 31188 states have internal predecessors, (37512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31189 states to 31189 states and 37512 transitions. [2024-11-13 13:06:20,720 INFO L78 Accepts]: Start accepts. Automaton has 31189 states and 37512 transitions. Word has length 107 [2024-11-13 13:06:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:06:20,720 INFO L471 AbstractCegarLoop]: Abstraction has 31189 states and 37512 transitions. [2024-11-13 13:06:20,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 31189 states and 37512 transitions. [2024-11-13 13:06:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 13:06:20,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:06:20,721 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:06:20,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 13:06:20,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:06:20,922 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:06:20,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:06:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash 894545005, now seen corresponding path program 1 times [2024-11-13 13:06:20,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:06:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88774835] [2024-11-13 13:06:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:06:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:06:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:06:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:21,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:06:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88774835] [2024-11-13 13:06:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88774835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:06:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938419069] [2024-11-13 13:06:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:06:21,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:06:21,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:06:21,657 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:06:21,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:06:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:06:21,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 13:06:21,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:06:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:23,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:06:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:26,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938419069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:06:26,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:06:26,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 43 [2024-11-13 13:06:26,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069844696] [2024-11-13 13:06:26,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:06:26,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 13:06:26,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:06:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 13:06:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:06:26,494 INFO L87 Difference]: Start difference. First operand 31189 states and 37512 transitions. Second operand has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:06:32,627 INFO L93 Difference]: Finished difference Result 51795 states and 62311 transitions. [2024-11-13 13:06:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 13:06:32,627 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-13 13:06:32,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:06:32,655 INFO L225 Difference]: With dead ends: 51795 [2024-11-13 13:06:32,655 INFO L226 Difference]: Without dead ends: 34775 [2024-11-13 13:06:32,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1021, Invalid=4235, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 13:06:32,666 INFO L432 NwaCegarLoop]: 1575 mSDtfsCounter, 25572 mSDsluCounter, 18936 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25572 SdHoareTripleChecker+Valid, 20511 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:06:32,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25572 Valid, 20511 Invalid, 1109 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:06:32,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34775 states. [2024-11-13 13:06:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34775 to 34606. [2024-11-13 13:06:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34606 states, 34604 states have (on average 1.1996301005664085) internal successors, (41512), 34605 states have internal predecessors, (41512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34606 states to 34606 states and 41512 transitions. [2024-11-13 13:06:35,444 INFO L78 Accepts]: Start accepts. Automaton has 34606 states and 41512 transitions. Word has length 107 [2024-11-13 13:06:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:06:35,445 INFO L471 AbstractCegarLoop]: Abstraction has 34606 states and 41512 transitions. [2024-11-13 13:06:35,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:06:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 34606 states and 41512 transitions. [2024-11-13 13:06:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 13:06:35,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:06:35,446 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:06:35,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:06:35,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:06:35,646 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:06:35,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:06:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1893802549, now seen corresponding path program 1 times [2024-11-13 13:06:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:06:35,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311177408] [2024-11-13 13:06:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:06:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:06:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:06:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:38,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:06:38,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311177408] [2024-11-13 13:06:38,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311177408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:06:38,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832489861] [2024-11-13 13:06:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:06:38,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:06:38,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:06:38,063 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:06:38,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:06:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:06:38,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 13:06:38,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:06:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:42,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:06:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:06:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832489861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:06:47,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:06:47,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 19] total 61 [2024-11-13 13:06:47,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675546591] [2024-11-13 13:06:47,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:06:47,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-13 13:06:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:06:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-13 13:06:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3417, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 13:06:47,289 INFO L87 Difference]: Start difference. First operand 34606 states and 41512 transitions. Second operand has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:07:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:07:20,489 INFO L93 Difference]: Finished difference Result 56821 states and 68128 transitions. [2024-11-13 13:07:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-13 13:07:20,490 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-13 13:07:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:07:20,552 INFO L225 Difference]: With dead ends: 56821 [2024-11-13 13:07:20,552 INFO L226 Difference]: Without dead ends: 48301 [2024-11-13 13:07:20,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9504 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=5157, Invalid=29253, Unknown=0, NotChecked=0, Total=34410 [2024-11-13 13:07:20,568 INFO L432 NwaCegarLoop]: 1652 mSDtfsCounter, 31942 mSDsluCounter, 35550 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31942 SdHoareTripleChecker+Valid, 37202 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:07:20,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31942 Valid, 37202 Invalid, 3752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [159 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 13:07:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48301 states. [2024-11-13 13:07:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48301 to 33615. [2024-11-13 13:07:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33615 states, 33613 states have (on average 1.1991788891202808) internal successors, (40308), 33614 states have internal predecessors, (40308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:07:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33615 states to 33615 states and 40308 transitions. [2024-11-13 13:07:23,837 INFO L78 Accepts]: Start accepts. Automaton has 33615 states and 40308 transitions. Word has length 108 [2024-11-13 13:07:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:07:23,838 INFO L471 AbstractCegarLoop]: Abstraction has 33615 states and 40308 transitions. [2024-11-13 13:07:23,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:07:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 33615 states and 40308 transitions. [2024-11-13 13:07:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 13:07:23,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:07:23,840 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:07:23,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 13:07:24,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:07:24,041 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:07:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:07:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1892438737, now seen corresponding path program 1 times [2024-11-13 13:07:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:07:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525652826] [2024-11-13 13:07:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:07:24,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:07:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:07:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:07:25,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:07:25,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525652826] [2024-11-13 13:07:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525652826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:07:25,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102317529] [2024-11-13 13:07:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:07:25,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:07:25,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:07:25,181 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:07:25,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:07:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:07:25,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:07:25,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:07:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:07:26,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:07:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:07:30,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102317529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:07:30,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:07:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 43 [2024-11-13 13:07:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406289285] [2024-11-13 13:07:30,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:07:30,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 13:07:30,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:07:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 13:07:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:07:30,400 INFO L87 Difference]: Start difference. First operand 33615 states and 40308 transitions. Second operand has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:07:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:07:56,162 INFO L93 Difference]: Finished difference Result 60790 states and 72739 transitions. [2024-11-13 13:07:56,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-13 13:07:56,162 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-13 13:07:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:07:56,196 INFO L225 Difference]: With dead ends: 60790 [2024-11-13 13:07:56,196 INFO L226 Difference]: Without dead ends: 42664 [2024-11-13 13:07:56,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6714 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=3549, Invalid=19707, Unknown=0, NotChecked=0, Total=23256 [2024-11-13 13:07:56,211 INFO L432 NwaCegarLoop]: 1625 mSDtfsCounter, 19443 mSDsluCounter, 30556 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19443 SdHoareTripleChecker+Valid, 32181 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:07:56,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19443 Valid, 32181 Invalid, 2861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 13:07:56,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42664 states. [2024-11-13 13:08:00,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42664 to 40295. [2024-11-13 13:08:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40295 states, 40293 states have (on average 1.193457920730648) internal successors, (48088), 40294 states have internal predecessors, (48088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:08:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40295 states to 40295 states and 48088 transitions. [2024-11-13 13:08:00,400 INFO L78 Accepts]: Start accepts. Automaton has 40295 states and 48088 transitions. Word has length 108 [2024-11-13 13:08:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:08:00,401 INFO L471 AbstractCegarLoop]: Abstraction has 40295 states and 48088 transitions. [2024-11-13 13:08:00,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:08:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 40295 states and 48088 transitions. [2024-11-13 13:08:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 13:08:00,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:08:00,402 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:08:00,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 13:08:00,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:08:00,603 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:08:00,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:08:00,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1242985743, now seen corresponding path program 1 times [2024-11-13 13:08:00,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:08:00,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062336943] [2024-11-13 13:08:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:08:00,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:08:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:08:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:08:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:08:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062336943] [2024-11-13 13:08:02,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062336943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:08:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469350335] [2024-11-13 13:08:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:08:02,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:08:02,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:08:02,495 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:08:02,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:08:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:08:02,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-13 13:08:02,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:08:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 42 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:08:08,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:08:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:08:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469350335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:08:20,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:08:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 27] total 75 [2024-11-13 13:08:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278110158] [2024-11-13 13:08:20,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:08:20,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-13 13:08:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:08:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-13 13:08:20,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=5044, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 13:08:20,460 INFO L87 Difference]: Start difference. First operand 40295 states and 48088 transitions. Second operand has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:09:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:09:49,620 INFO L93 Difference]: Finished difference Result 71070 states and 84523 transitions. [2024-11-13 13:09:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2024-11-13 13:09:49,621 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-13 13:09:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:09:49,677 INFO L225 Difference]: With dead ends: 71070 [2024-11-13 13:09:49,677 INFO L226 Difference]: Without dead ends: 57190 [2024-11-13 13:09:49,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46582 ImplicationChecksByTransitivity, 78.6s TimeCoverageRelationStatistics Valid=18100, Invalid=97840, Unknown=0, NotChecked=0, Total=115940 [2024-11-13 13:09:49,696 INFO L432 NwaCegarLoop]: 1692 mSDtfsCounter, 24553 mSDsluCounter, 42495 mSDsCounter, 0 mSdLazyCounter, 6249 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24553 SdHoareTripleChecker+Valid, 44187 SdHoareTripleChecker+Invalid, 6444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 6249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:09:49,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24553 Valid, 44187 Invalid, 6444 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [195 Valid, 6249 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-13 13:09:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57190 states. [2024-11-13 13:09:56,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57190 to 41953. [2024-11-13 13:09:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41953 states, 41951 states have (on average 1.1935829896784345) internal successors, (50072), 41952 states have internal predecessors, (50072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:09:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41953 states to 41953 states and 50072 transitions. [2024-11-13 13:09:56,351 INFO L78 Accepts]: Start accepts. Automaton has 41953 states and 50072 transitions. Word has length 108 [2024-11-13 13:09:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:09:56,352 INFO L471 AbstractCegarLoop]: Abstraction has 41953 states and 50072 transitions. [2024-11-13 13:09:56,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:09:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 41953 states and 50072 transitions. [2024-11-13 13:09:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-13 13:09:56,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:09:56,355 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:09:56,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 13:09:56,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 13:09:56,556 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:09:56,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:09:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1276047978, now seen corresponding path program 1 times [2024-11-13 13:09:56,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:09:56,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312869776] [2024-11-13 13:09:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:09:56,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:09:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:09:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 67 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:09:58,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:09:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312869776] [2024-11-13 13:09:58,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312869776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:09:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045464147] [2024-11-13 13:09:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:09:58,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:09:58,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:09:58,252 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:09:58,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:09:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:09:58,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:09:58,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:09:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 80 proven. 147 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 13:09:59,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:10:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 190 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 13:10:02,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045464147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:10:02,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:10:02,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 43 [2024-11-13 13:10:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838233494] [2024-11-13 13:10:02,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:10:02,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 13:10:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:10:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 13:10:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 13:10:02,507 INFO L87 Difference]: Start difference. First operand 41953 states and 50072 transitions. Second operand has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:10:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:10:22,020 INFO L93 Difference]: Finished difference Result 55354 states and 66158 transitions. [2024-11-13 13:10:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-13 13:10:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-13 13:10:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:10:22,060 INFO L225 Difference]: With dead ends: 55354 [2024-11-13 13:10:22,061 INFO L226 Difference]: Without dead ends: 42047 [2024-11-13 13:10:22,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4283 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=3290, Invalid=13480, Unknown=0, NotChecked=0, Total=16770 [2024-11-13 13:10:22,075 INFO L432 NwaCegarLoop]: 1585 mSDtfsCounter, 27701 mSDsluCounter, 19744 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27701 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:10:22,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27701 Valid, 21329 Invalid, 2263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 13:10:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42047 states. [2024-11-13 13:10:26,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42047 to 30308. [2024-11-13 13:10:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30308 states, 30306 states have (on average 1.1933940473833564) internal successors, (36167), 30307 states have internal predecessors, (36167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:10:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30308 states to 30308 states and 36167 transitions. [2024-11-13 13:10:27,041 INFO L78 Accepts]: Start accepts. Automaton has 30308 states and 36167 transitions. Word has length 146 [2024-11-13 13:10:27,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:10:27,042 INFO L471 AbstractCegarLoop]: Abstraction has 30308 states and 36167 transitions. [2024-11-13 13:10:27,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:10:27,042 INFO L276 IsEmpty]: Start isEmpty. Operand 30308 states and 36167 transitions. [2024-11-13 13:10:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-13 13:10:27,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:10:27,045 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:10:27,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 13:10:27,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 13:10:27,247 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:10:27,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:10:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash -931241632, now seen corresponding path program 1 times [2024-11-13 13:10:27,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:10:27,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465102233] [2024-11-13 13:10:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:10:27,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:10:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:10:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:10:29,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:10:29,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465102233] [2024-11-13 13:10:29,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465102233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:10:29,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878137795] [2024-11-13 13:10:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:10:29,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:10:29,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:10:29,345 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:10:29,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d1ae121-bec0-4308-b6a2-5ea9e3501ca5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:10:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:10:29,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 13:10:29,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:10:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 57 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:10:33,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:10:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:10:41,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878137795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:10:41,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:10:41,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 67 [2024-11-13 13:10:41,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390143731] [2024-11-13 13:10:41,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:10:41,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-13 13:10:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:10:41,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-13 13:10:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4065, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 13:10:41,184 INFO L87 Difference]: Start difference. First operand 30308 states and 36167 transitions. Second operand has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)