./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.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_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/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_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/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_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/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 789f9022e0356e4a739037a0c2015b201291f4e47288de5fc5a9fb72d6c0a5a8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:54:36,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:54:36,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:54:36,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:54:36,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:54:36,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:54:36,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:54:36,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:54:36,293 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:54:36,293 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:54:36,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:54:36,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:54:36,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:54:36,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:54:36,295 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:54:36,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:54:36,296 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:54:36,297 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:54:36,297 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:54:36,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:54:36,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:54:36,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:54:36,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:54:36,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:54:36,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:54:36,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:54:36,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:54:36,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:54:36,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:54:36,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:54:36,300 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:54:36,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:54:36,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:54:36,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:54:36,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:54:36,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:54:36,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:54:36,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:54:36,301 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_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/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 -> 789f9022e0356e4a739037a0c2015b201291f4e47288de5fc5a9fb72d6c0a5a8 [2024-11-28 03:54:36,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:54:36,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:54:36,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:54:36,722 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:54:36,723 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:54:36,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c [2024-11-28 03:54:39,801 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/data/40ac019d4/87e63d4e0f334b4bbbe9b986df5febde/FLAG846bb8750 [2024-11-28 03:54:40,185 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:54:40,186 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c [2024-11-28 03:54:40,201 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/data/40ac019d4/87e63d4e0f334b4bbbe9b986df5febde/FLAG846bb8750 [2024-11-28 03:54:40,217 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/data/40ac019d4/87e63d4e0f334b4bbbe9b986df5febde [2024-11-28 03:54:40,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:54:40,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:54:40,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:54:40,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:54:40,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:54:40,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:40,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46468e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40, skipping insertion in model container [2024-11-28 03:54:40,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:40,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:54:40,669 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_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c[21331,21344] [2024-11-28 03:54:40,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:54:40,713 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:54:40,836 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c[21331,21344] [2024-11-28 03:54:40,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:54:40,855 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:54:40,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40 WrapperNode [2024-11-28 03:54:40,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:54:40,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:54:40,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:54:40,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:54:40,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:40,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,165 INFO L138 Inliner]: procedures = 13, calls = 403, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 4144 [2024-11-28 03:54:41,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:54:41,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:54:41,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:54:41,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:54:41,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,371 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 03:54:41,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,463 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:54:41,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:54:41,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:54:41,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:54:41,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (1/1) ... [2024-11-28 03:54:41,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:54:41,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:41,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:54:41,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:54:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:54:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:54:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:54:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:54:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 03:54:41,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 03:54:41,978 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:54:41,980 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:54:48,889 INFO L? ?]: Removed 929 outVars from TransFormulas that were not future-live. [2024-11-28 03:54:48,889 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:54:48,984 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:54:48,988 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:54:48,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:54:48 BoogieIcfgContainer [2024-11-28 03:54:48,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:54:48,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:54:48,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:54:49,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:54:49,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:54:40" (1/3) ... [2024-11-28 03:54:49,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5204701e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:54:49, skipping insertion in model container [2024-11-28 03:54:49,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:40" (2/3) ... [2024-11-28 03:54:49,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5204701e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:54:49, skipping insertion in model container [2024-11-28 03:54:49,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:54:48" (3/3) ... [2024-11-28 03:54:49,010 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-100-2-0-unsat-1.c [2024-11-28 03:54:49,038 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:54:49,040 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-100-2-0-unsat-1.c that has 2 procedures, 1915 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 03:54:49,212 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:54:49,231 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;@2696f332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:54:49,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:54:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 1915 states, 1516 states have (on average 1.5343007915567282) internal successors, (2326), 1517 states have internal predecessors, (2326), 396 states have call successors, (396), 1 states have call predecessors, (396), 1 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) [2024-11-28 03:54:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2684 [2024-11-28 03:54:49,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:49,530 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:49,531 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:49,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1390302114, now seen corresponding path program 1 times [2024-11-28 03:54:49,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:49,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716001521] [2024-11-28 03:54:49,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 828 proven. 6192 refuted. 0 times theorem prover too weak. 305820 trivial. 0 not checked. [2024-11-28 03:55:20,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:20,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716001521] [2024-11-28 03:55:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716001521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:55:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584777340] [2024-11-28 03:55:20,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:20,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:20,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:20,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:20,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:55:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:22,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 5198 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 03:55:22,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 23912 proven. 6456 refuted. 0 times theorem prover too weak. 282472 trivial. 0 not checked. [2024-11-28 03:55:41,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 2520 proven. 6792 refuted. 0 times theorem prover too weak. 303528 trivial. 0 not checked. [2024-11-28 03:56:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584777340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:56:03,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:56:03,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 36 [2024-11-28 03:56:03,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728639081] [2024-11-28 03:56:03,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:03,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 03:56:03,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:03,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 03:56:03,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:56:03,895 INFO L87 Difference]: Start difference. First operand has 1915 states, 1516 states have (on average 1.5343007915567282) internal successors, (2326), 1517 states have internal predecessors, (2326), 396 states have call successors, (396), 1 states have call predecessors, (396), 1 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) Second operand has 36 states, 25 states have (on average 76.88) internal successors, (1922), 26 states have internal predecessors, (1922), 32 states have call successors, (1047), 2 states have call predecessors, (1047), 3 states have return successors, (1049), 31 states have call predecessors, (1049), 32 states have call successors, (1049) [2024-11-28 03:56:28,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:28,771 INFO L93 Difference]: Finished difference Result 23897 states and 41790 transitions. [2024-11-28 03:56:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 03:56:28,777 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 25 states have (on average 76.88) internal successors, (1922), 26 states have internal predecessors, (1922), 32 states have call successors, (1047), 2 states have call predecessors, (1047), 3 states have return successors, (1049), 31 states have call predecessors, (1049), 32 states have call successors, (1049) Word has length 2683 [2024-11-28 03:56:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:28,924 INFO L225 Difference]: With dead ends: 23897 [2024-11-28 03:56:28,924 INFO L226 Difference]: Without dead ends: 21985 [2024-11-28 03:56:28,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5437 GetRequests, 5356 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1938, Invalid=4542, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 03:56:28,961 INFO L435 NwaCegarLoop]: 8357 mSDtfsCounter, 64083 mSDsluCounter, 73690 mSDsCounter, 0 mSdLazyCounter, 14555 mSolverCounterSat, 4593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64097 SdHoareTripleChecker+Valid, 82047 SdHoareTripleChecker+Invalid, 19148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 4593 IncrementalHoareTripleChecker+Valid, 14555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:28,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64097 Valid, 82047 Invalid, 19148 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [4593 Valid, 14555 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2024-11-28 03:56:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21985 states. [2024-11-28 03:56:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21985 to 14860. [2024-11-28 03:56:30,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14860 states, 12860 states have (on average 1.567573872472784) internal successors, (20159), 12860 states have internal predecessors, (20159), 1998 states have call successors, (1998), 1 states have call predecessors, (1998), 1 states have return successors, (1998), 1998 states have call predecessors, (1998), 1998 states have call successors, (1998) [2024-11-28 03:56:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14860 states to 14860 states and 24155 transitions. [2024-11-28 03:56:31,063 INFO L78 Accepts]: Start accepts. Automaton has 14860 states and 24155 transitions. Word has length 2683 [2024-11-28 03:56:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:31,072 INFO L471 AbstractCegarLoop]: Abstraction has 14860 states and 24155 transitions. [2024-11-28 03:56:31,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 25 states have (on average 76.88) internal successors, (1922), 26 states have internal predecessors, (1922), 32 states have call successors, (1047), 2 states have call predecessors, (1047), 3 states have return successors, (1049), 31 states have call predecessors, (1049), 32 states have call successors, (1049) [2024-11-28 03:56:31,075 INFO L276 IsEmpty]: Start isEmpty. Operand 14860 states and 24155 transitions. [2024-11-28 03:56:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2686 [2024-11-28 03:56:31,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:31,223 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:31,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:56:31,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:56:31,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:31,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:31,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1272369276, now seen corresponding path program 1 times [2024-11-28 03:56:31,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:31,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416870201] [2024-11-28 03:56:31,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:31,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 648 proven. 1716 refuted. 0 times theorem prover too weak. 310476 trivial. 0 not checked. [2024-11-28 03:56:43,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416870201] [2024-11-28 03:56:43,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416870201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817437938] [2024-11-28 03:56:43,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:43,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:43,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:43,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:43,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:56:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:44,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 5204 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:56:44,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 40500 proven. 1554 refuted. 0 times theorem prover too weak. 270786 trivial. 0 not checked. [2024-11-28 03:56:46,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 648 proven. 1716 refuted. 0 times theorem prover too weak. 310476 trivial. 0 not checked. [2024-11-28 03:56:50,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817437938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:56:50,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:56:50,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:56:50,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128763499] [2024-11-28 03:56:50,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:50,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:56:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:50,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:56:50,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:56:50,663 INFO L87 Difference]: Start difference. First operand 14860 states and 24155 transitions. Second operand has 12 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 5 states have call successors, (423), 2 states have call predecessors, (423), 3 states have return successors, (423), 5 states have call predecessors, (423), 5 states have call successors, (423) [2024-11-28 03:56:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:56,363 INFO L93 Difference]: Finished difference Result 43941 states and 71420 transitions. [2024-11-28 03:56:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:56:56,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 5 states have call successors, (423), 2 states have call predecessors, (423), 3 states have return successors, (423), 5 states have call predecessors, (423), 5 states have call successors, (423) Word has length 2685 [2024-11-28 03:56:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:56,479 INFO L225 Difference]: With dead ends: 43941 [2024-11-28 03:56:56,480 INFO L226 Difference]: Without dead ends: 31089 [2024-11-28 03:56:56,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5384 GetRequests, 5368 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:56:56,507 INFO L435 NwaCegarLoop]: 4966 mSDtfsCounter, 7140 mSDsluCounter, 18005 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7497 SdHoareTripleChecker+Valid, 22971 SdHoareTripleChecker+Invalid, 4439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:56,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7497 Valid, 22971 Invalid, 4439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 4423 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 03:56:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31089 states. [2024-11-28 03:57:00,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31089 to 30697. [2024-11-28 03:57:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30697 states, 26732 states have (on average 1.5681206045189287) internal successors, (41919), 26732 states have internal predecessors, (41919), 3963 states have call successors, (3963), 1 states have call predecessors, (3963), 1 states have return successors, (3963), 3963 states have call predecessors, (3963), 3963 states have call successors, (3963) [2024-11-28 03:57:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30697 states to 30697 states and 49845 transitions. [2024-11-28 03:57:00,296 INFO L78 Accepts]: Start accepts. Automaton has 30697 states and 49845 transitions. Word has length 2685 [2024-11-28 03:57:00,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:00,303 INFO L471 AbstractCegarLoop]: Abstraction has 30697 states and 49845 transitions. [2024-11-28 03:57:00,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 5 states have call successors, (423), 2 states have call predecessors, (423), 3 states have return successors, (423), 5 states have call predecessors, (423), 5 states have call successors, (423) [2024-11-28 03:57:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 30697 states and 49845 transitions. [2024-11-28 03:57:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2686 [2024-11-28 03:57:00,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:00,573 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 03:57:00,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:57:00,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:00,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:00,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1720708600, now seen corresponding path program 1 times [2024-11-28 03:57:00,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:00,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55271372] [2024-11-28 03:57:00,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:00,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 384 proven. 1980 refuted. 0 times theorem prover too weak. 310476 trivial. 0 not checked. [2024-11-28 03:57:10,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:10,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55271372] [2024-11-28 03:57:10,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55271372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:10,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003356695] [2024-11-28 03:57:10,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:10,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:10,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:10,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:10,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:57:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:11,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 5204 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:57:11,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 149456 proven. 1056 refuted. 0 times theorem prover too weak. 162328 trivial. 0 not checked. [2024-11-28 03:57:12,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 384 proven. 1980 refuted. 0 times theorem prover too weak. 310476 trivial. 0 not checked. [2024-11-28 03:57:15,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003356695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:15,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:15,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:57:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033857979] [2024-11-28 03:57:15,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:15,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:57:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:15,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:57:15,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:57:15,186 INFO L87 Difference]: Start difference. First operand 30697 states and 49845 transitions. Second operand has 12 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 6 states have call successors, (551), 2 states have call predecessors, (551), 3 states have return successors, (551), 6 states have call predecessors, (551), 6 states have call successors, (551) [2024-11-28 03:57:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:20,422 INFO L93 Difference]: Finished difference Result 61480 states and 99870 transitions. [2024-11-28 03:57:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:57:20,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 6 states have call successors, (551), 2 states have call predecessors, (551), 3 states have return successors, (551), 6 states have call predecessors, (551), 6 states have call successors, (551) Word has length 2685 [2024-11-28 03:57:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:20,606 INFO L225 Difference]: With dead ends: 61480 [2024-11-28 03:57:20,606 INFO L226 Difference]: Without dead ends: 49086 [2024-11-28 03:57:20,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5382 GetRequests, 5367 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:57:20,645 INFO L435 NwaCegarLoop]: 4344 mSDtfsCounter, 7221 mSDsluCounter, 18527 mSDsCounter, 0 mSdLazyCounter, 4296 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7592 SdHoareTripleChecker+Valid, 22871 SdHoareTripleChecker+Invalid, 4539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:20,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7592 Valid, 22871 Invalid, 4539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [243 Valid, 4296 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 03:57:20,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49086 states. [2024-11-28 03:57:24,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49086 to 42202. [2024-11-28 03:57:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42202 states, 36802 states have (on average 1.5686375740448888) internal successors, (57729), 36802 states have internal predecessors, (57729), 5398 states have call successors, (5398), 1 states have call predecessors, (5398), 1 states have return successors, (5398), 5398 states have call predecessors, (5398), 5398 states have call successors, (5398) [2024-11-28 03:57:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42202 states to 42202 states and 68525 transitions. [2024-11-28 03:57:25,049 INFO L78 Accepts]: Start accepts. Automaton has 42202 states and 68525 transitions. Word has length 2685 [2024-11-28 03:57:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:25,052 INFO L471 AbstractCegarLoop]: Abstraction has 42202 states and 68525 transitions. [2024-11-28 03:57:25,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 6 states have call successors, (551), 2 states have call predecessors, (551), 3 states have return successors, (551), 6 states have call predecessors, (551), 6 states have call successors, (551) [2024-11-28 03:57:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 42202 states and 68525 transitions. [2024-11-28 03:57:25,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2686 [2024-11-28 03:57:25,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:25,300 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 03:57:25,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:57:25,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:25,505 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:25,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1900914730, now seen corresponding path program 1 times [2024-11-28 03:57:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:25,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980439378] [2024-11-28 03:57:25,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 516 proven. 4188 refuted. 0 times theorem prover too weak. 308136 trivial. 0 not checked. [2024-11-28 03:57:42,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:42,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980439378] [2024-11-28 03:57:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980439378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:42,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906703752] [2024-11-28 03:57:42,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:42,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:42,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:42,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:42,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:57:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:43,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 5204 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:57:43,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 106256 proven. 3168 refuted. 0 times theorem prover too weak. 203416 trivial. 0 not checked. [2024-11-28 03:57:48,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 516 proven. 4188 refuted. 0 times theorem prover too weak. 308136 trivial. 0 not checked. [2024-11-28 03:57:54,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906703752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:54,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:54,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-11-28 03:57:54,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234078466] [2024-11-28 03:57:54,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:54,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:57:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:54,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:57:54,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:57:54,708 INFO L87 Difference]: Start difference. First operand 42202 states and 68525 transitions. Second operand has 16 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 12 states have call successors, (710), 2 states have call predecessors, (710), 3 states have return successors, (711), 12 states have call predecessors, (711), 12 states have call successors, (711) [2024-11-28 03:58:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:02,149 INFO L93 Difference]: Finished difference Result 135861 states and 220872 transitions. [2024-11-28 03:58:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:58:02,150 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 12 states have call successors, (710), 2 states have call predecessors, (710), 3 states have return successors, (711), 12 states have call predecessors, (711), 12 states have call successors, (711) Word has length 2685 [2024-11-28 03:58:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:02,520 INFO L225 Difference]: With dead ends: 135861 [2024-11-28 03:58:02,521 INFO L226 Difference]: Without dead ends: 97133 [2024-11-28 03:58:02,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5390 GetRequests, 5369 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:58:02,616 INFO L435 NwaCegarLoop]: 4121 mSDtfsCounter, 11149 mSDsluCounter, 17528 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11429 SdHoareTripleChecker+Valid, 21649 SdHoareTripleChecker+Invalid, 4162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:02,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11429 Valid, 21649 Invalid, 4162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [466 Valid, 3696 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 03:58:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97133 states. [2024-11-28 03:58:10,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97133 to 87380. [2024-11-28 03:58:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87380 states, 76352 states have (on average 1.568171102263202) internal successors, (119733), 76352 states have internal predecessors, (119733), 11026 states have call successors, (11026), 1 states have call predecessors, (11026), 1 states have return successors, (11026), 11026 states have call predecessors, (11026), 11026 states have call successors, (11026) [2024-11-28 03:58:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87380 states to 87380 states and 141785 transitions. [2024-11-28 03:58:11,272 INFO L78 Accepts]: Start accepts. Automaton has 87380 states and 141785 transitions. Word has length 2685 [2024-11-28 03:58:11,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:11,276 INFO L471 AbstractCegarLoop]: Abstraction has 87380 states and 141785 transitions. [2024-11-28 03:58:11,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 12 states have call successors, (710), 2 states have call predecessors, (710), 3 states have return successors, (711), 12 states have call predecessors, (711), 12 states have call successors, (711) [2024-11-28 03:58:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand 87380 states and 141785 transitions. [2024-11-28 03:58:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2687 [2024-11-28 03:58:11,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:11,589 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 03:58:11,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:58:11,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:58:11,791 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:11,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:11,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2090678140, now seen corresponding path program 1 times [2024-11-28 03:58:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:11,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781475581] [2024-11-28 03:58:11,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 3537 proven. 20088 refuted. 0 times theorem prover too weak. 289215 trivial. 0 not checked. [2024-11-28 03:59:43,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:43,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781475581] [2024-11-28 03:59:43,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781475581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429407297] [2024-11-28 03:59:43,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:43,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:43,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:43,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:43,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_209d4c8f-56dc-4bd7-8fe8-00a5cb759d2c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:59:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:44,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 5207 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 03:59:44,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:00:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 13004 proven. 9258 refuted. 0 times theorem prover too weak. 290578 trivial. 0 not checked. [2024-11-28 04:00:10,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:00:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 2112 proven. 9468 refuted. 0 times theorem prover too weak. 301260 trivial. 0 not checked. [2024-11-28 04:00:39,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429407297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:00:39,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:00:39,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 20, 20] total 71 [2024-11-28 04:00:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852404964] [2024-11-28 04:00:39,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:00:39,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-28 04:00:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:39,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-28 04:00:39,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=4538, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 04:00:39,485 INFO L87 Difference]: Start difference. First operand 87380 states and 141785 transitions. Second operand has 71 states, 47 states have (on average 42.659574468085104) internal successors, (2005), 52 states have internal predecessors, (2005), 66 states have call successors, (1110), 2 states have call predecessors, (1110), 3 states have return successors, (1112), 61 states have call predecessors, (1112), 66 states have call successors, (1112)