./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-085.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-085.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 49f2f14ce67a65f5a0fd11896e258d0c61002fa750203719f83d9c45bcadd833 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:39:20,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:39:21,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:39:21,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:39:21,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:39:21,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:39:21,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:39:21,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:39:21,116 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:39:21,116 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:39:21,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:39:21,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:39:21,117 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:39:21,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:39:21,117 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:39:21,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:39:21,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:39:21,119 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:39:21,119 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:39:21,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:39:21,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:39:21,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:39:21,120 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:39:21,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:39:21,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:39:21,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:39:21,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:39:21,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:39:21,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:39:21,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:39:21,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:39:21,123 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:39:21,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:39:21,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:39:21,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:39:21,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:39:21,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:39:21,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:39:21,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:39:21,124 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_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49f2f14ce67a65f5a0fd11896e258d0c61002fa750203719f83d9c45bcadd833 [2024-11-28 04:39:21,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:39:21,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:39:21,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:39:21,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:39:21,519 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:39:21,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-085.c [2024-11-28 04:39:24,660 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/data/a38538bc4/ad3475968fe74000b7222d96fe126b93/FLAGd8bf79b20 [2024-11-28 04:39:25,128 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:39:25,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/sv-benchmarks/c/xcsp/Dubois-085.c [2024-11-28 04:39:25,148 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/data/a38538bc4/ad3475968fe74000b7222d96fe126b93/FLAGd8bf79b20 [2024-11-28 04:39:25,168 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/data/a38538bc4/ad3475968fe74000b7222d96fe126b93 [2024-11-28 04:39:25,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:39:25,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:39:25,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:39:25,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:39:25,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:39:25,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:25" (1/1) ... [2024-11-28 04:39:25,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55fc6545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:25, skipping insertion in model container [2024-11-28 04:39:25,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:25" (1/1) ... [2024-11-28 04:39:25,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:39:26,000 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_e6d41548-c61a-4b58-8975-5f367a451c8a/sv-benchmarks/c/xcsp/Dubois-085.c[60720,60733] [2024-11-28 04:39:26,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:39:26,094 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:39:26,448 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_e6d41548-c61a-4b58-8975-5f367a451c8a/sv-benchmarks/c/xcsp/Dubois-085.c[60720,60733] [2024-11-28 04:39:26,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:39:26,485 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:39:26,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26 WrapperNode [2024-11-28 04:39:26,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:39:26,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:39:26,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:39:26,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:39:26,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:26,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:27,974 INFO L138 Inliner]: procedures = 13, calls = 687, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16931 [2024-11-28 04:39:27,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:39:27,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:39:27,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:39:27,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:39:27,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:27,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:28,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:28,556 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:39:28,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:28,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:29,224 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:29,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:29,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:29,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:29,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:29,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:39:29,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:39:29,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:39:29,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:39:29,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (1/1) ... [2024-11-28 04:39:29,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:39:29,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:29,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:39:29,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:39:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:39:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:39:29,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:39:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:39:29,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 04:39:29,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 04:39:30,403 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:39:30,406 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:40:02,729 INFO L? ?]: Removed 5870 outVars from TransFormulas that were not future-live. [2024-11-28 04:40:02,729 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:40:02,885 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:40:02,886 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:40:02,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:02 BoogieIcfgContainer [2024-11-28 04:40:02,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:40:02,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:40:02,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:40:02,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:40:02,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:39:25" (1/3) ... [2024-11-28 04:40:02,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631f722f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:40:02, skipping insertion in model container [2024-11-28 04:40:02,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:26" (2/3) ... [2024-11-28 04:40:02,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631f722f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:40:02, skipping insertion in model container [2024-11-28 04:40:02,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:02" (3/3) ... [2024-11-28 04:40:02,899 INFO L128 eAbstractionObserver]: Analyzing ICFG Dubois-085.c [2024-11-28 04:40:02,917 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:40:02,921 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-085.c that has 2 procedures, 6726 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:40:03,253 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:40:03,273 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;@5e1635f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:40:03,274 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:40:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 6726 states, 6043 states have (on average 1.6192288598378288) internal successors, (9785), 6044 states have internal predecessors, (9785), 680 states have call successors, (680), 1 states have call predecessors, (680), 1 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-28 04:40:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5699 [2024-11-28 04:40:03,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:03,904 INFO L218 NwaCegarLoop]: trace histogram [680, 680, 680, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:03,905 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:03,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:03,927 INFO L85 PathProgramCache]: Analyzing trace with hash 591824249, now seen corresponding path program 1 times [2024-11-28 04:40:03,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425733729] [2024-11-28 04:40:03,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 0 proven. 1358 refuted. 0 times theorem prover too weak. 922082 trivial. 0 not checked. [2024-11-28 04:40:15,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:15,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425733729] [2024-11-28 04:40:15,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425733729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060535548] [2024-11-28 04:40:15,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:15,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:15,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:15,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:15,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:40:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:18,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 12436 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:40:18,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 1358 proven. 0 refuted. 0 times theorem prover too weak. 922082 trivial. 0 not checked. [2024-11-28 04:40:19,203 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:40:19,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060535548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:40:19,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:40:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251344800] [2024-11-28 04:40:19,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:19,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:40:19,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:19,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:40:19,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:40:19,291 INFO L87 Difference]: Start difference. First operand has 6726 states, 6043 states have (on average 1.6192288598378288) internal successors, (9785), 6044 states have internal predecessors, (9785), 680 states have call successors, (680), 1 states have call predecessors, (680), 1 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) Second operand has 2 states, 2 states have (on average 1151.5) internal successors, (2303), 2 states have internal predecessors, (2303), 2 states have call successors, (680), 2 states have call predecessors, (680), 1 states have return successors, (680), 1 states have call predecessors, (680), 2 states have call successors, (680) [2024-11-28 04:40:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:19,825 INFO L93 Difference]: Finished difference Result 13446 states and 22964 transitions. [2024-11-28 04:40:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:40:19,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1151.5) internal successors, (2303), 2 states have internal predecessors, (2303), 2 states have call successors, (680), 2 states have call predecessors, (680), 1 states have return successors, (680), 1 states have call predecessors, (680), 2 states have call successors, (680) Word has length 5698 [2024-11-28 04:40:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:19,908 INFO L225 Difference]: With dead ends: 13446 [2024-11-28 04:40:19,908 INFO L226 Difference]: Without dead ends: 6723 [2024-11-28 04:40:19,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5699 GetRequests, 5699 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:40:19,946 INFO L435 NwaCegarLoop]: 11141 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, 11141 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:19,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:40:19,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6723 states. [2024-11-28 04:40:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6723 to 6723. [2024-11-28 04:40:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6723 states, 6041 states have (on average 1.6191027975500745) internal successors, (9781), 6041 states have internal predecessors, (9781), 680 states have call successors, (680), 1 states have call predecessors, (680), 1 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-28 04:40:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6723 states to 6723 states and 11141 transitions. [2024-11-28 04:40:21,027 INFO L78 Accepts]: Start accepts. Automaton has 6723 states and 11141 transitions. Word has length 5698 [2024-11-28 04:40:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:21,030 INFO L471 AbstractCegarLoop]: Abstraction has 6723 states and 11141 transitions. [2024-11-28 04:40:21,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1151.5) internal successors, (2303), 2 states have internal predecessors, (2303), 2 states have call successors, (680), 2 states have call predecessors, (680), 1 states have return successors, (680), 1 states have call predecessors, (680), 2 states have call successors, (680) [2024-11-28 04:40:21,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6723 states and 11141 transitions. [2024-11-28 04:40:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5699 [2024-11-28 04:40:21,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:21,308 INFO L218 NwaCegarLoop]: trace histogram [680, 680, 680, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:21,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:40:21,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:21,510 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:21,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1242617863, now seen corresponding path program 1 times [2024-11-28 04:40:21,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:21,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234698290] [2024-11-28 04:40:21,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:21,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 1530 proven. 507 refuted. 0 times theorem prover too weak. 921403 trivial. 0 not checked. [2024-11-28 04:40:35,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:35,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234698290] [2024-11-28 04:40:35,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234698290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:35,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023670199] [2024-11-28 04:40:35,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:35,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:35,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:35,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:35,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:40:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:38,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 12436 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:40:38,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 2037 proven. 0 refuted. 0 times theorem prover too weak. 921403 trivial. 0 not checked. [2024-11-28 04:40:39,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:40:39,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023670199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:39,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:40:39,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 04:40:39,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471123506] [2024-11-28 04:40:39,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:39,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:40:39,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:39,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:40:39,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:40:39,082 INFO L87 Difference]: Start difference. First operand 6723 states and 11141 transitions. Second operand has 6 states, 5 states have (on average 460.8) internal successors, (2304), 6 states have internal predecessors, (2304), 2 states have call successors, (680), 1 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) [2024-11-28 04:40:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:45,309 INFO L93 Difference]: Finished difference Result 6735 states and 11155 transitions. [2024-11-28 04:40:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:40:45,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 460.8) internal successors, (2304), 6 states have internal predecessors, (2304), 2 states have call successors, (680), 1 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) Word has length 5698 [2024-11-28 04:40:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:45,372 INFO L225 Difference]: With dead ends: 6735 [2024-11-28 04:40:45,372 INFO L226 Difference]: Without dead ends: 6725 [2024-11-28 04:40:45,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5703 GetRequests, 5697 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:40:45,378 INFO L435 NwaCegarLoop]: 10457 mSDtfsCounter, 1 mSDsluCounter, 40455 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50912 SdHoareTripleChecker+Invalid, 4790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:45,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50912 Invalid, 4790 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 04:40:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6725 states. [2024-11-28 04:40:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 6725. [2024-11-28 04:40:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6725 states, 6043 states have (on average 1.618897898394837) internal successors, (9783), 6043 states have internal predecessors, (9783), 680 states have call successors, (680), 1 states have call predecessors, (680), 1 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-28 04:40:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6725 states to 6725 states and 11143 transitions. [2024-11-28 04:40:46,209 INFO L78 Accepts]: Start accepts. Automaton has 6725 states and 11143 transitions. Word has length 5698 [2024-11-28 04:40:46,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:46,232 INFO L471 AbstractCegarLoop]: Abstraction has 6725 states and 11143 transitions. [2024-11-28 04:40:46,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 460.8) internal successors, (2304), 6 states have internal predecessors, (2304), 2 states have call successors, (680), 1 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) [2024-11-28 04:40:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 6725 states and 11143 transitions. [2024-11-28 04:40:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5700 [2024-11-28 04:40:46,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:46,558 INFO L218 NwaCegarLoop]: trace histogram [680, 680, 680, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:46,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:40:46,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:46,759 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:46,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1072772302, now seen corresponding path program 1 times [2024-11-28 04:40:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:46,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433398537] [2024-11-28 04:40:46,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 1530 proven. 507 refuted. 0 times theorem prover too weak. 921403 trivial. 0 not checked. [2024-11-28 04:40:55,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433398537] [2024-11-28 04:40:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433398537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554917534] [2024-11-28 04:40:55,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:55,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:55,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:55,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:40:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:58,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 12439 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:40:58,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 2716 proven. 0 refuted. 0 times theorem prover too weak. 920724 trivial. 0 not checked. [2024-11-28 04:40:58,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:40:58,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554917534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:58,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:40:58,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 04:40:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897739160] [2024-11-28 04:40:58,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:58,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:40:58,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:58,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:40:58,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:40:58,746 INFO L87 Difference]: Start difference. First operand 6725 states and 11143 transitions. Second operand has 4 states, 4 states have (on average 576.25) internal successors, (2305), 4 states have internal predecessors, (2305), 2 states have call successors, (680), 2 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) [2024-11-28 04:40:58,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:58,983 INFO L93 Difference]: Finished difference Result 6755 states and 11185 transitions. [2024-11-28 04:40:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:40:58,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 576.25) internal successors, (2305), 4 states have internal predecessors, (2305), 2 states have call successors, (680), 2 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) Word has length 5699 [2024-11-28 04:40:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:59,030 INFO L225 Difference]: With dead ends: 6755 [2024-11-28 04:40:59,030 INFO L226 Difference]: Without dead ends: 6734 [2024-11-28 04:40:59,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5704 GetRequests, 5698 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:40:59,037 INFO L435 NwaCegarLoop]: 11137 mSDtfsCounter, 9 mSDsluCounter, 22261 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 33398 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:59,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 33398 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:40:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6734 states. [2024-11-28 04:40:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6734 to 6734. [2024-11-28 04:40:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6734 states, 6052 states have (on average 1.6186384666226041) internal successors, (9796), 6052 states have internal predecessors, (9796), 680 states have call successors, (680), 1 states have call predecessors, (680), 1 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-28 04:40:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6734 states to 6734 states and 11156 transitions. [2024-11-28 04:40:59,585 INFO L78 Accepts]: Start accepts. Automaton has 6734 states and 11156 transitions. Word has length 5699 [2024-11-28 04:40:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:59,596 INFO L471 AbstractCegarLoop]: Abstraction has 6734 states and 11156 transitions. [2024-11-28 04:40:59,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 576.25) internal successors, (2305), 4 states have internal predecessors, (2305), 2 states have call successors, (680), 2 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) [2024-11-28 04:40:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6734 states and 11156 transitions. [2024-11-28 04:40:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5700 [2024-11-28 04:40:59,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:59,907 INFO L218 NwaCegarLoop]: trace histogram [680, 680, 680, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:59,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:41:00,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:00,108 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:00,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash -357150808, now seen corresponding path program 1 times [2024-11-28 04:41:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825443173] [2024-11-28 04:41:00,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 1530 proven. 507 refuted. 0 times theorem prover too weak. 921403 trivial. 0 not checked. [2024-11-28 04:41:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825443173] [2024-11-28 04:41:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825443173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998122660] [2024-11-28 04:41:09,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:09,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:09,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:09,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:41:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:12,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 12439 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:41:12,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 2716 proven. 0 refuted. 0 times theorem prover too weak. 920724 trivial. 0 not checked. [2024-11-28 04:41:12,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:41:12,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998122660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:12,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:41:12,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 04:41:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098089487] [2024-11-28 04:41:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:12,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:41:12,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:12,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:41:12,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:41:12,908 INFO L87 Difference]: Start difference. First operand 6734 states and 11156 transitions. Second operand has 3 states, 3 states have (on average 768.3333333333334) internal successors, (2305), 3 states have internal predecessors, (2305), 2 states have call successors, (680), 2 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) [2024-11-28 04:41:13,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:13,058 INFO L93 Difference]: Finished difference Result 6752 states and 11178 transitions. [2024-11-28 04:41:13,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:41:13,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 768.3333333333334) internal successors, (2305), 3 states have internal predecessors, (2305), 2 states have call successors, (680), 2 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) Word has length 5699 [2024-11-28 04:41:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:13,115 INFO L225 Difference]: With dead ends: 6752 [2024-11-28 04:41:13,115 INFO L226 Difference]: Without dead ends: 6735 [2024-11-28 04:41:13,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5704 GetRequests, 5699 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:41:13,119 INFO L435 NwaCegarLoop]: 11140 mSDtfsCounter, 0 mSDsluCounter, 11131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22271 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:13,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22271 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:41:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2024-11-28 04:41:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 6735. [2024-11-28 04:41:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 6053 states have (on average 1.618371055674872) internal successors, (9796), 6053 states have internal predecessors, (9796), 680 states have call successors, (680), 1 states have call predecessors, (680), 1 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-28 04:41:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 11156 transitions. [2024-11-28 04:41:13,639 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 11156 transitions. Word has length 5699 [2024-11-28 04:41:13,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:13,649 INFO L471 AbstractCegarLoop]: Abstraction has 6735 states and 11156 transitions. [2024-11-28 04:41:13,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 768.3333333333334) internal successors, (2305), 3 states have internal predecessors, (2305), 2 states have call successors, (680), 2 states have call predecessors, (680), 2 states have return successors, (680), 2 states have call predecessors, (680), 2 states have call successors, (680) [2024-11-28 04:41:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 11156 transitions. [2024-11-28 04:41:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5701 [2024-11-28 04:41:13,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:13,961 INFO L218 NwaCegarLoop]: trace histogram [680, 680, 680, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:13,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:41:14,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 04:41:14,162 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:14,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1555950131, now seen corresponding path program 1 times [2024-11-28 04:41:14,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:14,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479338518] [2024-11-28 04:41:14,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 923440 backedges. 1530 proven. 507 refuted. 0 times theorem prover too weak. 921403 trivial. 0 not checked. [2024-11-28 04:41:23,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:23,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479338518] [2024-11-28 04:41:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479338518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577308677] [2024-11-28 04:41:23,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:23,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:23,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:23,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:23,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6d41548-c61a-4b58-8975-5f367a451c8a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process