./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-095.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_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/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_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-095.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/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_b29824c1-1872-44d0-bacd-557b9334e976/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 e238c288867a9be4c6a7e11a8e08267ab29e2230e0f2e873e7e484db35df0c2f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:36:01,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:36:01,162 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:36:01,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:36:01,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:36:01,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:36:01,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:36:01,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:36:01,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:36:01,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:36:01,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:36:01,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:36:01,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:36:01,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:36:01,200 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:36:01,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:36:01,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:36:01,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:36:01,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:36:01,201 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:36:01,201 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:36:01,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:36:01,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:36:01,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:36:01,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:36:01,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:36:01,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:36:01,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:36:01,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:36:01,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:36:01,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:36:01,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:36:01,203 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:36:01,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:36:01,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:36:01,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:36:01,203 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:36:01,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:36:01,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:36:01,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:36:01,204 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_b29824c1-1872-44d0-bacd-557b9334e976/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 -> e238c288867a9be4c6a7e11a8e08267ab29e2230e0f2e873e7e484db35df0c2f [2024-11-28 02:36:01,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:36:01,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:36:01,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:36:01,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:36:01,569 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:36:01,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-095.c [2024-11-28 02:36:04,592 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/data/21da85ac0/a273a87936b040ceb1214e2aed5ccf2f/FLAGd4ad33686 [2024-11-28 02:36:05,046 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:36:05,047 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/sv-benchmarks/c/xcsp/Dubois-095.c [2024-11-28 02:36:05,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/data/21da85ac0/a273a87936b040ceb1214e2aed5ccf2f/FLAGd4ad33686 [2024-11-28 02:36:05,102 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/data/21da85ac0/a273a87936b040ceb1214e2aed5ccf2f [2024-11-28 02:36:05,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:36:05,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:36:05,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:36:05,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:36:05,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:36:05,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:36:05" (1/1) ... [2024-11-28 02:36:05,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a506e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:05, skipping insertion in model container [2024-11-28 02:36:05,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:36:05" (1/1) ... [2024-11-28 02:36:05,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:36:05,941 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_b29824c1-1872-44d0-bacd-557b9334e976/sv-benchmarks/c/xcsp/Dubois-095.c[67920,67933] [2024-11-28 02:36:05,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:36:06,001 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:36:06,300 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_b29824c1-1872-44d0-bacd-557b9334e976/sv-benchmarks/c/xcsp/Dubois-095.c[67920,67933] [2024-11-28 02:36:06,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:36:06,364 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:36:06,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06 WrapperNode [2024-11-28 02:36:06,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:36:06,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:36:06,368 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:36:06,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:36:06,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:06,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:07,638 INFO L138 Inliner]: procedures = 13, calls = 767, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18921 [2024-11-28 02:36:07,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:36:07,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:36:07,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:36:07,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:36:07,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:07,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:07,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:08,128 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 02:36:08,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:08,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:08,770 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:08,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:09,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:09,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:09,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:09,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:36:09,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:36:09,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:36:09,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:36:09,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (1/1) ... [2024-11-28 02:36:09,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:36:09,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:36:09,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:36:09,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:36:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:36:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:36:09,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:36:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:36:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 02:36:09,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 02:36:10,148 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:36:10,150 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:36:43,914 INFO L? ?]: Removed 6560 outVars from TransFormulas that were not future-live. [2024-11-28 02:36:43,924 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:36:44,148 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:36:44,149 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:36:44,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:36:44 BoogieIcfgContainer [2024-11-28 02:36:44,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:36:44,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:36:44,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:36:44,161 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:36:44,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:36:05" (1/3) ... [2024-11-28 02:36:44,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d510f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:36:44, skipping insertion in model container [2024-11-28 02:36:44,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:36:06" (2/3) ... [2024-11-28 02:36:44,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d510f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:36:44, skipping insertion in model container [2024-11-28 02:36:44,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:36:44" (3/3) ... [2024-11-28 02:36:44,165 INFO L128 eAbstractionObserver]: Analyzing ICFG Dubois-095.c [2024-11-28 02:36:44,181 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:36:44,184 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-095.c that has 2 procedures, 7516 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:36:44,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:36:44,449 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;@2f50eb2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:36:44,449 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:36:44,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 7516 states, 6753 states have (on average 1.619280319857841) internal successors, (10935), 6754 states have internal predecessors, (10935), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2024-11-28 02:36:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6369 [2024-11-28 02:36:44,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:36:44,922 INFO L218 NwaCegarLoop]: trace histogram [760, 760, 760, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 02:36:44,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:36:44,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:44,934 INFO L85 PathProgramCache]: Analyzing trace with hash 894710894, now seen corresponding path program 1 times [2024-11-28 02:36:44,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:44,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300643792] [2024-11-28 02:36:44,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:44,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:36:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 1152162 trivial. 0 not checked. [2024-11-28 02:36:57,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:36:57,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300643792] [2024-11-28 02:36:57,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300643792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:36:57,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338964063] [2024-11-28 02:36:57,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:36:57,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:36:57,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:36:57,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:36:57,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:37:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:00,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 13896 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:37:00,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 1518 proven. 0 refuted. 0 times theorem prover too weak. 1152162 trivial. 0 not checked. [2024-11-28 02:37:01,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338964063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:01,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:37:01,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:37:01,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669301590] [2024-11-28 02:37:01,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:01,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:37:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:01,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:37:01,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:37:01,430 INFO L87 Difference]: Start difference. First operand has 7516 states, 6753 states have (on average 1.619280319857841) internal successors, (10935), 6754 states have internal predecessors, (10935), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) Second operand has 2 states, 2 states have (on average 1286.5) internal successors, (2573), 2 states have internal predecessors, (2573), 2 states have call successors, (760), 2 states have call predecessors, (760), 1 states have return successors, (760), 1 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-28 02:37:02,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:37:02,013 INFO L93 Difference]: Finished difference Result 15026 states and 25664 transitions. [2024-11-28 02:37:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:37:02,019 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1286.5) internal successors, (2573), 2 states have internal predecessors, (2573), 2 states have call successors, (760), 2 states have call predecessors, (760), 1 states have return successors, (760), 1 states have call predecessors, (760), 2 states have call successors, (760) Word has length 6368 [2024-11-28 02:37:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:37:02,066 INFO L225 Difference]: With dead ends: 15026 [2024-11-28 02:37:02,067 INFO L226 Difference]: Without dead ends: 7513 [2024-11-28 02:37:02,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6369 GetRequests, 6369 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 02:37:02,090 INFO L435 NwaCegarLoop]: 12451 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, 12451 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 02:37:02,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12451 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:37:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7513 states. [2024-11-28 02:37:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7513 to 7513. [2024-11-28 02:37:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7513 states, 6751 states have (on average 1.6191675307361872) internal successors, (10931), 6751 states have internal predecessors, (10931), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2024-11-28 02:37:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7513 states to 7513 states and 12451 transitions. [2024-11-28 02:37:03,406 INFO L78 Accepts]: Start accepts. Automaton has 7513 states and 12451 transitions. Word has length 6368 [2024-11-28 02:37:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:37:03,411 INFO L471 AbstractCegarLoop]: Abstraction has 7513 states and 12451 transitions. [2024-11-28 02:37:03,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1286.5) internal successors, (2573), 2 states have internal predecessors, (2573), 2 states have call successors, (760), 2 states have call predecessors, (760), 1 states have return successors, (760), 1 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-28 02:37:03,414 INFO L276 IsEmpty]: Start isEmpty. Operand 7513 states and 12451 transitions. [2024-11-28 02:37:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6369 [2024-11-28 02:37:03,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:37:03,820 INFO L218 NwaCegarLoop]: trace histogram [760, 760, 760, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 02:37:03,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:37:04,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:04,022 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:37:04,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:04,027 INFO L85 PathProgramCache]: Analyzing trace with hash 573663598, now seen corresponding path program 1 times [2024-11-28 02:37:04,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:04,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119488718] [2024-11-28 02:37:04,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:04,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 1710 proven. 567 refuted. 0 times theorem prover too weak. 1151403 trivial. 0 not checked. [2024-11-28 02:37:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:19,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119488718] [2024-11-28 02:37:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119488718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:37:19,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532052170] [2024-11-28 02:37:19,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:19,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:19,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:19,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:19,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:37:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:23,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 13896 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:37:23,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 2277 proven. 0 refuted. 0 times theorem prover too weak. 1151403 trivial. 0 not checked. [2024-11-28 02:37:23,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:23,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532052170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:23,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:37:23,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 02:37:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854783608] [2024-11-28 02:37:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:23,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:37:23,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:23,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:37:23,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:37:23,702 INFO L87 Difference]: Start difference. First operand 7513 states and 12451 transitions. Second operand has 6 states, 5 states have (on average 514.8) internal successors, (2574), 6 states have internal predecessors, (2574), 2 states have call successors, (760), 1 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-28 02:37:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:37:29,460 INFO L93 Difference]: Finished difference Result 7525 states and 12465 transitions. [2024-11-28 02:37:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:37:29,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 514.8) internal successors, (2574), 6 states have internal predecessors, (2574), 2 states have call successors, (760), 1 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) Word has length 6368 [2024-11-28 02:37:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:37:29,516 INFO L225 Difference]: With dead ends: 7525 [2024-11-28 02:37:29,517 INFO L226 Difference]: Without dead ends: 7515 [2024-11-28 02:37:29,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6373 GetRequests, 6367 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 02:37:29,523 INFO L435 NwaCegarLoop]: 11687 mSDtfsCounter, 1 mSDsluCounter, 45215 mSDsCounter, 0 mSdLazyCounter, 5349 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 56902 SdHoareTripleChecker+Invalid, 5350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:37:29,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 56902 Invalid, 5350 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 5349 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-28 02:37:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7515 states. [2024-11-28 02:37:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7515 to 7515. [2024-11-28 02:37:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 6753 states have (on average 1.6189841551902857) internal successors, (10933), 6753 states have internal predecessors, (10933), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2024-11-28 02:37:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 12453 transitions. [2024-11-28 02:37:30,276 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 12453 transitions. Word has length 6368 [2024-11-28 02:37:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:37:30,299 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 12453 transitions. [2024-11-28 02:37:30,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 514.8) internal successors, (2574), 6 states have internal predecessors, (2574), 2 states have call successors, (760), 1 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-28 02:37:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 12453 transitions. [2024-11-28 02:37:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6370 [2024-11-28 02:37:30,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:37:30,651 INFO L218 NwaCegarLoop]: trace histogram [760, 760, 760, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:30,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:37:30,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 02:37:30,852 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:37:30,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:30,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2128201547, now seen corresponding path program 1 times [2024-11-28 02:37:30,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:30,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955442110] [2024-11-28 02:37:30,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:30,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 1710 proven. 567 refuted. 0 times theorem prover too weak. 1151403 trivial. 0 not checked. [2024-11-28 02:37:43,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:43,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955442110] [2024-11-28 02:37:43,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955442110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:37:43,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999240667] [2024-11-28 02:37:43,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:43,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:43,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:43,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:43,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:37:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:46,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 13899 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:37:46,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 3036 proven. 0 refuted. 0 times theorem prover too weak. 1150644 trivial. 0 not checked. [2024-11-28 02:37:46,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:46,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999240667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:46,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:37:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 02:37:46,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127706705] [2024-11-28 02:37:46,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:46,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:37:46,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:46,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:37:46,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:37:46,837 INFO L87 Difference]: Start difference. First operand 7515 states and 12453 transitions. Second operand has 4 states, 4 states have (on average 643.75) internal successors, (2575), 4 states have internal predecessors, (2575), 2 states have call successors, (760), 2 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-28 02:37:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:37:47,123 INFO L93 Difference]: Finished difference Result 7545 states and 12495 transitions. [2024-11-28 02:37:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:37:47,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 643.75) internal successors, (2575), 4 states have internal predecessors, (2575), 2 states have call successors, (760), 2 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) Word has length 6369 [2024-11-28 02:37:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:37:47,175 INFO L225 Difference]: With dead ends: 7545 [2024-11-28 02:37:47,175 INFO L226 Difference]: Without dead ends: 7524 [2024-11-28 02:37:47,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6374 GetRequests, 6368 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 02:37:47,183 INFO L435 NwaCegarLoop]: 12447 mSDtfsCounter, 9 mSDsluCounter, 24881 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37328 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 02:37:47,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 37328 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:37:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7524 states. [2024-11-28 02:37:47,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7524 to 7524. [2024-11-28 02:37:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 6762 states have (on average 1.6187518485655132) internal successors, (10946), 6762 states have internal predecessors, (10946), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2024-11-28 02:37:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 12466 transitions. [2024-11-28 02:37:47,898 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 12466 transitions. Word has length 6369 [2024-11-28 02:37:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:37:47,906 INFO L471 AbstractCegarLoop]: Abstraction has 7524 states and 12466 transitions. [2024-11-28 02:37:47,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 643.75) internal successors, (2575), 4 states have internal predecessors, (2575), 2 states have call successors, (760), 2 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-28 02:37:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 12466 transitions. [2024-11-28 02:37:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6370 [2024-11-28 02:37:48,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:37:48,192 INFO L218 NwaCegarLoop]: trace histogram [760, 760, 760, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 02:37:48,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:37:48,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29824c1-1872-44d0-bacd-557b9334e976/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 02:37:48,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:37:48,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash 698278437, now seen corresponding path program 1 times [2024-11-28 02:37:48,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:48,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662953977] [2024-11-28 02:37:48,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat