./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max60-2.i --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_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/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_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max60-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/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_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/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 6dbb3c8dbc9ecf6e4f72a22b68126998e2267c3eb50185a59b3a9d03df64099d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:49:49,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:49:50,105 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:49:50,119 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:49:50,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:49:50,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:49:50,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:49:50,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:49:50,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:49:50,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:49:50,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:49:50,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:49:50,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:49:50,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:49:50,150 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:49:50,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:49:50,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:49:50,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:49:50,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:49:50,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:49:50,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:49:50,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:49:50,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:49:50,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:49:50,151 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:49:50,152 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:49:50,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:49:50,152 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:49:50,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:49:50,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:49:50,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:49:50,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:49:50,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:50,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:49:50,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:49:50,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:49:50,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:49:50,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:49:50,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:49:50,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:49:50,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:49:50,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:49:50,155 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_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/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 -> 6dbb3c8dbc9ecf6e4f72a22b68126998e2267c3eb50185a59b3a9d03df64099d [2024-11-13 15:49:50,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:49:50,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:49:50,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:49:50,579 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:49:50,580 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:49:50,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/reducercommutativity/max60-2.i Unable to find full path for "g++" [2024-11-13 15:49:52,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:49:53,048 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:49:53,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/sv-benchmarks/c/reducercommutativity/max60-2.i [2024-11-13 15:49:53,058 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/data/b6ece17d7/508f1bf461f54e52833dea3d5e68d350/FLAG45464b30f [2024-11-13 15:49:53,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/data/b6ece17d7/508f1bf461f54e52833dea3d5e68d350 [2024-11-13 15:49:53,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:49:53,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:49:53,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:53,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:49:53,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:49:53,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436c24da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53, skipping insertion in model container [2024-11-13 15:49:53,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:49:53,532 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_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/sv-benchmarks/c/reducercommutativity/max60-2.i[1290,1303] [2024-11-13 15:49:53,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:53,547 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:49:53,577 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_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/sv-benchmarks/c/reducercommutativity/max60-2.i[1290,1303] [2024-11-13 15:49:53,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:53,604 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:49:53,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53 WrapperNode [2024-11-13 15:49:53,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:53,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:53,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:49:53,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:49:53,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,652 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-13 15:49:53,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:53,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:49:53,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:49:53,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:49:53,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,699 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-13 15:49:53,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:49:53,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:49:53,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:49:53,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:49:53,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (1/1) ... [2024-11-13 15:49:53,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:53,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:53,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:53,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:49:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:49:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-13 15:49:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-13 15:49:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:49:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:49:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:49:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:49:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:49:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:49:53,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:49:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:49:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:49:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:49:53,942 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:49:53,944 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:49:54,157 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-13 15:49:54,157 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:49:54,173 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:49:54,175 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 15:49:54,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:54 BoogieIcfgContainer [2024-11-13 15:49:54,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:49:54,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:49:54,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:49:54,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:49:54,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:49:53" (1/3) ... [2024-11-13 15:49:54,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69216410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:54, skipping insertion in model container [2024-11-13 15:49:54,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:53" (2/3) ... [2024-11-13 15:49:54,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69216410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:54, skipping insertion in model container [2024-11-13 15:49:54,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:54" (3/3) ... [2024-11-13 15:49:54,194 INFO L112 eAbstractionObserver]: Analyzing ICFG max60-2.i [2024-11-13 15:49:54,215 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:49:54,218 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG max60-2.i that has 2 procedures, 26 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-13 15:49:54,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:49:54,324 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;@2f0212c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:49:54,326 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:49:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:49:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 15:49:54,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:54,340 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:54,340 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:49:54,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1329745534, now seen corresponding path program 1 times [2024-11-13 15:49:54,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:54,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16509594] [2024-11-13 15:49:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:54,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 15:49:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:54,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:49:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:54,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 15:49:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:49:54,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16509594] [2024-11-13 15:49:54,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16509594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:54,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:54,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:49:54,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031048614] [2024-11-13 15:49:54,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:54,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:49:54,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:54,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:49:54,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:49:54,621 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:49:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:54,649 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2024-11-13 15:49:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:49:54,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-13 15:49:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:54,659 INFO L225 Difference]: With dead ends: 49 [2024-11-13 15:49:54,661 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 15:49:54,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:49:54,671 INFO L432 NwaCegarLoop]: 31 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, 31 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 15:49:54,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:49:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 15:49:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-13 15:49:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:49:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-13 15:49:54,722 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 29 [2024-11-13 15:49:54,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:54,723 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-13 15:49:54,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:49:54,723 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-13 15:49:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 15:49:54,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:54,727 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:54,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:49:54,729 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:49:54,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:54,730 INFO L85 PathProgramCache]: Analyzing trace with hash -283077045, now seen corresponding path program 1 times [2024-11-13 15:49:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:54,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307930065] [2024-11-13 15:49:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:54,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 15:49:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:49:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 15:49:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 15:49:55,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307930065] [2024-11-13 15:49:55,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307930065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128189936] [2024-11-13 15:49:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:55,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:55,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:55,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:55,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:49:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:55,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:49:55,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128189936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 15:49:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252198839] [2024-11-13 15:49:55,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:55,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:55,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:55,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:55,308 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:49:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:55,323 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-13 15:49:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-13 15:49:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:55,325 INFO L225 Difference]: With dead ends: 42 [2024-11-13 15:49:55,326 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 15:49:55,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:55,327 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:55,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:49:55,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 15:49:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-13 15:49:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:49:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-13 15:49:55,335 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 29 [2024-11-13 15:49:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:55,336 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-13 15:49:55,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:49:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-13 15:49:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 15:49:55,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:55,337 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:55,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:49:55,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:55,542 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:49:55,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -357643534, now seen corresponding path program 1 times [2024-11-13 15:49:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677451544] [2024-11-13 15:49:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 15:49:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-13 15:49:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 15:49:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:49:55,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:55,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677451544] [2024-11-13 15:49:55,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677451544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042043040] [2024-11-13 15:49:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:55,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:55,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:55,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:55,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:49:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:55,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:55,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:49:55,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:55,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042043040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:55,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:55,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 15:49:55,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313711638] [2024-11-13 15:49:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:55,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:55,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:55,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:55,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:55,867 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:49:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:55,891 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2024-11-13 15:49:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-13 15:49:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:55,893 INFO L225 Difference]: With dead ends: 43 [2024-11-13 15:49:55,893 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 15:49:55,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:55,895 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:55,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:49:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 15:49:55,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-13 15:49:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:49:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-13 15:49:55,902 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 30 [2024-11-13 15:49:55,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:55,902 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-13 15:49:55,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:49:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-13 15:49:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 15:49:55,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:55,904 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:55,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:56,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:56,108 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:49:56,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1220633696, now seen corresponding path program 1 times [2024-11-13 15:49:56,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:56,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015439667] [2024-11-13 15:49:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:56,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 15:49:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 15:49:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 15:49:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:49:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:56,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015439667] [2024-11-13 15:49:56,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015439667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:56,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236190077] [2024-11-13 15:49:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:56,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:56,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:56,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:49:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:56,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:49:56,552 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:56,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236190077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:56,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:56,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-13 15:49:56,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515531547] [2024-11-13 15:49:56,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:56,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:56,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:56,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:56,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:56,554 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:49:56,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:56,569 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2024-11-13 15:49:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:56,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-13 15:49:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:56,572 INFO L225 Difference]: With dead ends: 39 [2024-11-13 15:49:56,572 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 15:49:56,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:56,573 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 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 15:49:56,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:49:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 15:49:56,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-13 15:49:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:49:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-13 15:49:56,579 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 39 [2024-11-13 15:49:56,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:56,580 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-13 15:49:56,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:49:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-13 15:49:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 15:49:56,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:56,582 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:56,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:49:56,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:56,786 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:49:56,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:56,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1133279453, now seen corresponding path program 1 times [2024-11-13 15:49:56,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:56,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690214121] [2024-11-13 15:49:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:56,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 15:49:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 15:49:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 15:49:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:49:56,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:56,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690214121] [2024-11-13 15:49:56,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690214121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:56,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241681671] [2024-11-13 15:49:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:56,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:56,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:56,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:49:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:57,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:57,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 15:49:57,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 15:49:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241681671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:57,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:49:57,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-13 15:49:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422094427] [2024-11-13 15:49:57,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:57,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:49:57,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:57,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:49:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:49:57,187 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 15:49:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:57,257 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2024-11-13 15:49:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:49:57,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-11-13 15:49:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:57,259 INFO L225 Difference]: With dead ends: 54 [2024-11-13 15:49:57,259 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 15:49:57,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:49:57,261 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:57,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:49:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 15:49:57,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-11-13 15:49:57,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:49:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-13 15:49:57,273 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 40 [2024-11-13 15:49:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:57,273 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-13 15:49:57,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 15:49:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-13 15:49:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 15:49:57,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:57,278 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:57,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:49:57,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:57,478 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:49:57,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1008973042, now seen corresponding path program 2 times [2024-11-13 15:49:57,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:57,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436819948] [2024-11-13 15:49:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:57,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:57,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 15:49:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:57,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 15:49:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:57,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-13 15:49:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-13 15:49:57,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436819948] [2024-11-13 15:49:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436819948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399540185] [2024-11-13 15:49:57,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:49:57,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:57,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:57,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:57,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:49:57,859 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:49:57,859 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:49:57,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:57,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 15:49:57,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 15:49:58,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399540185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:58,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:49:58,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-13 15:49:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326450641] [2024-11-13 15:49:58,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:58,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:49:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:58,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:49:58,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:49:58,089 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 15:49:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:58,169 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2024-11-13 15:49:58,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:49:58,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2024-11-13 15:49:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:58,174 INFO L225 Difference]: With dead ends: 62 [2024-11-13 15:49:58,174 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 15:49:58,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:49:58,175 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:58,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:49:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 15:49:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-13 15:49:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:49:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-13 15:49:58,187 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 52 [2024-11-13 15:49:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:58,188 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-13 15:49:58,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 15:49:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-13 15:49:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 15:49:58,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:58,189 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:58,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:58,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:58,395 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:49:58,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1672794635, now seen corresponding path program 3 times [2024-11-13 15:49:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:58,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771076152] [2024-11-13 15:49:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:58,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 15:49:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:58,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 15:49:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:58,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-13 15:49:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-13 15:49:58,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:58,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771076152] [2024-11-13 15:49:58,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771076152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:58,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164611286] [2024-11-13 15:49:58,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:49:58,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:58,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:58,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:58,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:49:58,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 15:49:58,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:49:58,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:58,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 15:49:59,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 15:49:59,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164611286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:59,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:49:59,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-13 15:49:59,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501008213] [2024-11-13 15:49:59,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:59,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:49:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:49:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:49:59,156 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:49:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:59,250 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-11-13 15:49:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:49:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2024-11-13 15:49:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:59,251 INFO L225 Difference]: With dead ends: 76 [2024-11-13 15:49:59,251 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 15:49:59,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:49:59,253 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:59,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 168 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:49:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 15:49:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-13 15:49:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:49:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2024-11-13 15:49:59,262 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 59 [2024-11-13 15:49:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:59,263 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2024-11-13 15:49:59,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:49:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2024-11-13 15:49:59,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-13 15:49:59,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:59,265 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 11, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:59,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:59,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:59,465 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:49:59,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash -459969038, now seen corresponding path program 4 times [2024-11-13 15:49:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241946877] [2024-11-13 15:49:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:59,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 15:50:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:00,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-13 15:50:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:00,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-13 15:50:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-11-13 15:50:00,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:00,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241946877] [2024-11-13 15:50:00,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241946877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:00,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983052140] [2024-11-13 15:50:00,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:50:00,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:00,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:00,060 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:00,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:50:00,304 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:50:00,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:00,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:50:00,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-11-13 15:50:00,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2024-11-13 15:50:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983052140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:00,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-11-13 15:50:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468912811] [2024-11-13 15:50:00,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:00,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:50:00,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:00,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:50:00,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:50:00,794 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:50:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:00,957 INFO L93 Difference]: Finished difference Result 113 states and 152 transitions. [2024-11-13 15:50:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:50:00,961 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 96 [2024-11-13 15:50:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:00,962 INFO L225 Difference]: With dead ends: 113 [2024-11-13 15:50:00,962 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 15:50:00,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:50:00,967 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:00,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 176 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:50:00,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 15:50:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-13 15:50:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:50:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2024-11-13 15:50:00,990 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 96 [2024-11-13 15:50:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:00,991 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2024-11-13 15:50:00,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.892857142857143) internal successors, (81), 28 states have internal predecessors, (81), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:50:00,991 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2024-11-13 15:50:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-13 15:50:00,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:00,995 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 12, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:01,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:50:01,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:01,199 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:01,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:01,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1894361621, now seen corresponding path program 5 times [2024-11-13 15:50:01,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:01,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852491140] [2024-11-13 15:50:01,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:01,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:01,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:50:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:01,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 15:50:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:01,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-13 15:50:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 2727 trivial. 0 not checked. [2024-11-13 15:50:02,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852491140] [2024-11-13 15:50:02,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852491140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38576155] [2024-11-13 15:50:02,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:50:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:02,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:02,041 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:02,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:50:02,589 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-13 15:50:02,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:02,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:50:02,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 1236 proven. 287 refuted. 0 times theorem prover too weak. 1282 trivial. 0 not checked. [2024-11-13 15:50:03,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 0 proven. 1527 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2024-11-13 15:50:03,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38576155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:03,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 45 [2024-11-13 15:50:03,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878597255] [2024-11-13 15:50:03,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:03,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 15:50:03,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 15:50:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 15:50:03,945 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand has 45 states, 45 states have (on average 2.888888888888889) internal successors, (130), 45 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:50:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:04,246 INFO L93 Difference]: Finished difference Result 186 states and 257 transitions. [2024-11-13 15:50:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 15:50:04,247 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.888888888888889) internal successors, (130), 45 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 169 [2024-11-13 15:50:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:04,250 INFO L225 Difference]: With dead ends: 186 [2024-11-13 15:50:04,251 INFO L226 Difference]: Without dead ends: 125 [2024-11-13 15:50:04,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 15:50:04,258 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 75 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:04,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 272 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:50:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-13 15:50:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-13 15:50:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.275) internal successors, (153), 120 states have internal predecessors, (153), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:50:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 159 transitions. [2024-11-13 15:50:04,283 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 159 transitions. Word has length 169 [2024-11-13 15:50:04,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:04,283 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 159 transitions. [2024-11-13 15:50:04,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.888888888888889) internal successors, (130), 45 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:50:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 159 transitions. [2024-11-13 15:50:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-13 15:50:04,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:04,294 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:04,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:50:04,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:04,495 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:04,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:04,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1842064914, now seen corresponding path program 6 times [2024-11-13 15:50:04,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:04,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656569493] [2024-11-13 15:50:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:04,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:05,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:50:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:05,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-13 15:50:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:05,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-11-13 15:50:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12394 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 12303 trivial. 0 not checked. [2024-11-13 15:50:05,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656569493] [2024-11-13 15:50:05,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656569493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831887595] [2024-11-13 15:50:05,721 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:50:05,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:05,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:05,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:05,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:50:06,034 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 15:50:06,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:06,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:50:06,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12394 backedges. 5530 proven. 3 refuted. 0 times theorem prover too weak. 6861 trivial. 0 not checked. [2024-11-13 15:50:06,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12394 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12391 trivial. 0 not checked. [2024-11-13 15:50:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831887595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:06,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 22 [2024-11-13 15:50:06,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636777926] [2024-11-13 15:50:06,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:06,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:50:06,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:50:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:50:06,232 INFO L87 Difference]: Start difference. First operand 125 states and 159 transitions. Second operand has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:50:06,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:06,311 INFO L93 Difference]: Finished difference Result 239 states and 311 transitions. [2024-11-13 15:50:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:50:06,312 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 314 [2024-11-13 15:50:06,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:06,314 INFO L225 Difference]: With dead ends: 239 [2024-11-13 15:50:06,314 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 15:50:06,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:50:06,320 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:06,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:50:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 15:50:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-13 15:50:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.264) internal successors, (158), 125 states have internal predecessors, (158), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:50:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 164 transitions. [2024-11-13 15:50:06,345 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 164 transitions. Word has length 314 [2024-11-13 15:50:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:06,346 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 164 transitions. [2024-11-13 15:50:06,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:50:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 164 transitions. [2024-11-13 15:50:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-13 15:50:06,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:06,360 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 14, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:06,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:50:06,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:50:06,561 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:06,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash -149262197, now seen corresponding path program 7 times [2024-11-13 15:50:06,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:06,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474862036] [2024-11-13 15:50:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:06,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:07,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 15:50:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:07,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-13 15:50:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:07,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-11-13 15:50:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12426 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 15:50:07,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:07,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474862036] [2024-11-13 15:50:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474862036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:07,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108775357] [2024-11-13 15:50:07,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:50:07,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:07,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:07,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:07,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:50:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:08,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:50:08,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12426 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 15:50:08,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12426 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 15:50:08,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108775357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:08,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:08,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-13 15:50:08,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175324932] [2024-11-13 15:50:08,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:08,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 15:50:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 15:50:08,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 15:50:08,916 INFO L87 Difference]: Start difference. First operand 130 states and 164 transitions. Second operand has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 15:50:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:08,980 INFO L93 Difference]: Finished difference Result 259 states and 342 transitions. [2024-11-13 15:50:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 15:50:08,981 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 319 [2024-11-13 15:50:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:08,982 INFO L225 Difference]: With dead ends: 259 [2024-11-13 15:50:08,982 INFO L226 Difference]: Without dead ends: 146 [2024-11-13 15:50:08,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 15:50:08,985 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:08,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:50:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-13 15:50:08,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-11-13 15:50:08,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.2340425531914894) internal successors, (174), 141 states have internal predecessors, (174), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:50:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2024-11-13 15:50:08,999 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 319 [2024-11-13 15:50:08,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:09,000 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2024-11-13 15:50:09,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 15:50:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2024-11-13 15:50:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-13 15:50:09,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:09,006 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 30, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:09,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 15:50:09,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:50:09,207 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:09,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:09,208 INFO L85 PathProgramCache]: Analyzing trace with hash 464336779, now seen corresponding path program 8 times [2024-11-13 15:50:09,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:09,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82802367] [2024-11-13 15:50:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:09,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:11,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 15:50:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:11,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-13 15:50:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:11,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-11-13 15:50:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12786 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 15:50:11,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82802367] [2024-11-13 15:50:11,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82802367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535855037] [2024-11-13 15:50:11,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:50:11,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:11,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:11,508 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:11,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:50:12,117 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:50:12,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:12,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:50:12,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12786 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 15:50:12,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12786 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 12321 trivial. 0 not checked. [2024-11-13 15:50:14,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535855037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:14,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:14,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 63 [2024-11-13 15:50:14,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346401533] [2024-11-13 15:50:14,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:14,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 15:50:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 15:50:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 15:50:14,291 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand has 63 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 15:50:14,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:14,418 INFO L93 Difference]: Finished difference Result 289 states and 386 transitions. [2024-11-13 15:50:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 15:50:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 335 [2024-11-13 15:50:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:14,420 INFO L225 Difference]: With dead ends: 289 [2024-11-13 15:50:14,421 INFO L226 Difference]: Without dead ends: 176 [2024-11-13 15:50:14,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 644 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 15:50:14,425 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:14,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:50:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-13 15:50:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-13 15:50:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 171 states have internal predecessors, (204), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:50:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 210 transitions. [2024-11-13 15:50:14,458 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 210 transitions. Word has length 335 [2024-11-13 15:50:14,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:14,460 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 210 transitions. [2024-11-13 15:50:14,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 15:50:14,461 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 210 transitions. [2024-11-13 15:50:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-13 15:50:14,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:14,469 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 60, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:14,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 15:50:14,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:50:14,673 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:14,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash -432344917, now seen corresponding path program 9 times [2024-11-13 15:50:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495325340] [2024-11-13 15:50:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:14,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:16,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 15:50:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:17,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-13 15:50:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:17,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-11-13 15:50:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14151 backedges. 0 proven. 6863 refuted. 0 times theorem prover too weak. 7288 trivial. 0 not checked. [2024-11-13 15:50:17,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:17,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495325340] [2024-11-13 15:50:17,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495325340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:17,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582563999] [2024-11-13 15:50:17,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:50:17,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:17,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:17,790 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:17,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:50:18,335 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 15:50:18,335 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:18,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:50:18,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14151 backedges. 5530 proven. 21 refuted. 0 times theorem prover too weak. 8600 trivial. 0 not checked. [2024-11-13 15:50:18,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14151 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 14130 trivial. 0 not checked. [2024-11-13 15:50:18,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582563999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:18,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:18,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2024-11-13 15:50:18,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11115385] [2024-11-13 15:50:18,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:18,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 15:50:18,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 15:50:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 15:50:18,870 INFO L87 Difference]: Start difference. First operand 176 states and 210 transitions. Second operand has 47 states, 47 states have (on average 2.893617021276596) internal successors, (136), 47 states have internal predecessors, (136), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:50:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:19,126 INFO L93 Difference]: Finished difference Result 300 states and 380 transitions. [2024-11-13 15:50:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-13 15:50:19,127 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.893617021276596) internal successors, (136), 47 states have internal predecessors, (136), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 365 [2024-11-13 15:50:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:19,129 INFO L225 Difference]: With dead ends: 300 [2024-11-13 15:50:19,129 INFO L226 Difference]: Without dead ends: 189 [2024-11-13 15:50:19,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 15:50:19,133 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 127 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:19,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 133 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:50:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-13 15:50:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2024-11-13 15:50:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.1868131868131868) internal successors, (216), 182 states have internal predecessors, (216), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:50:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2024-11-13 15:50:19,150 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 365 [2024-11-13 15:50:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:19,154 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2024-11-13 15:50:19,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.893617021276596) internal successors, (136), 47 states have internal predecessors, (136), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:50:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2024-11-13 15:50:19,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-13 15:50:19,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:19,162 INFO L215 NwaCegarLoop]: trace histogram [93, 93, 93, 60, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:19,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:50:19,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:19,367 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:19,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1441961671, now seen corresponding path program 10 times [2024-11-13 15:50:19,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:19,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832296542] [2024-11-13 15:50:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:19,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:20,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 15:50:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:22,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-13 15:50:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:22,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-11-13 15:50:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15063 backedges. 0 proven. 7324 refuted. 0 times theorem prover too weak. 7739 trivial. 0 not checked. [2024-11-13 15:50:22,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832296542] [2024-11-13 15:50:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832296542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158452711] [2024-11-13 15:50:22,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:50:22,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:22,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:22,120 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:22,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:50:22,918 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:50:22,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:22,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 15:50:22,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15063 backedges. 5894 proven. 1426 refuted. 0 times theorem prover too weak. 7743 trivial. 0 not checked. [2024-11-13 15:50:23,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15063 backedges. 0 proven. 7324 refuted. 0 times theorem prover too weak. 7739 trivial. 0 not checked. [2024-11-13 15:50:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158452711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:25,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:25,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 62 [2024-11-13 15:50:25,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072965134] [2024-11-13 15:50:25,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:25,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 15:50:25,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:25,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 15:50:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 15:50:25,126 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand has 62 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 15:50:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:25,656 INFO L93 Difference]: Finished difference Result 396 states and 525 transitions. [2024-11-13 15:50:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 15:50:25,657 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 382 [2024-11-13 15:50:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:25,660 INFO L225 Difference]: With dead ends: 396 [2024-11-13 15:50:25,660 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 15:50:25,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 738 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 15:50:25,663 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 287 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:25,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 146 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:50:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 15:50:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-11-13 15:50:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 269 states have (on average 1.2342007434944238) internal successors, (332), 269 states have internal predecessors, (332), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:50:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 338 transitions. [2024-11-13 15:50:25,681 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 338 transitions. Word has length 382 [2024-11-13 15:50:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:25,685 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 338 transitions. [2024-11-13 15:50:25,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 15:50:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 338 transitions. [2024-11-13 15:50:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-11-13 15:50:25,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:25,693 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 180, 60, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:25,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:50:25,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:50:25,897 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:25,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1464476245, now seen corresponding path program 11 times [2024-11-13 15:50:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:25,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116141355] [2024-11-13 15:50:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:25,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:27,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 15:50:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:27,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-11-13 15:50:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:27,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2024-11-13 15:50:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 50820 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 50715 trivial. 0 not checked. [2024-11-13 15:50:27,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:27,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116141355] [2024-11-13 15:50:27,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116141355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:27,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853983115] [2024-11-13 15:50:27,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:50:27,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:27,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:27,890 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:27,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab8e68-ee20-4e5d-8353-c2b0b4779e84/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process