./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/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_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:37:24,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:37:24,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:37:24,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:37:24,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:37:24,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:37:24,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:37:24,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:37:24,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:37:24,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:37:24,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:37:24,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:37:24,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:37:24,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:37:24,853 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:37:24,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:37:24,854 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:37:24,855 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:37:24,855 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:37:24,855 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:37:24,855 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:37:24,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:37:24,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:37:24,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:37:24,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:37:24,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:37:24,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:37:24,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:37:24,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:37:24,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:37:24,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:37:24,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:37:24,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:37:24,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:37:24,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:37:24,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:37:24,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:37:24,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:37:24,858 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_3fd9ecbb-e53c-4525-a082-772a37a40ebb/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2024-11-28 03:37:25,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:37:25,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:37:25,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:37:25,212 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:37:25,212 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:37:25,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-28 03:37:28,122 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/data/641ba29d6/b48db76a3e1844db849f16e0d40d37de/FLAG43d31af60 [2024-11-28 03:37:28,422 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:37:28,422 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-28 03:37:28,434 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/data/641ba29d6/b48db76a3e1844db849f16e0d40d37de/FLAG43d31af60 [2024-11-28 03:37:28,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/data/641ba29d6/b48db76a3e1844db849f16e0d40d37de [2024-11-28 03:37:28,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:37:28,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:37:28,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:37:28,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:37:28,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:37:28,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:37:28" (1/1) ... [2024-11-28 03:37:28,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398fb4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:28, skipping insertion in model container [2024-11-28 03:37:28,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:37:28" (1/1) ... [2024-11-28 03:37:28,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:37:29,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:37:29,088 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:37:29,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:37:29,225 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:37:29,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29 WrapperNode [2024-11-28 03:37:29,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:37:29,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:37:29,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:37:29,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:37:29,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,284 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2024-11-28 03:37:29,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:37:29,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:37:29,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:37:29,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:37:29,296 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,329 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-11-28 03:37:29,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,342 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:37:29,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:37:29,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:37:29,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:37:29,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (1/1) ... [2024-11-28 03:37:29,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:37:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:29,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:37:29,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:37:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:37:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:37:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 03:37:29,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 03:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:37:29,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:37:29,416 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:37:29,543 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:37:29,544 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:37:29,757 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:37:29,757 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:37:29,939 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:37:29,940 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 03:37:29,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:37:29 BoogieIcfgContainer [2024-11-28 03:37:29,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:37:29,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:37:29,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:37:29,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:37:29,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:37:28" (1/3) ... [2024-11-28 03:37:29,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309b8882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:37:29, skipping insertion in model container [2024-11-28 03:37:29,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:29" (2/3) ... [2024-11-28 03:37:29,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309b8882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:37:29, skipping insertion in model container [2024-11-28 03:37:29,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:37:29" (3/3) ... [2024-11-28 03:37:29,954 INFO L128 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2024-11-28 03:37:29,971 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:37:29,972 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 11_fmaxsymopt-zero.i that has 2 procedures, 25 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2024-11-28 03:37:29,973 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:37:30,039 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:37:30,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 29 transitions, 62 flow [2024-11-28 03:37:30,107 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-28 03:37:30,111 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:37:30,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 65 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-28 03:37:30,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 29 transitions, 62 flow [2024-11-28 03:37:30,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 29 transitions, 62 flow [2024-11-28 03:37:30,129 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:37:30,148 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=None, 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;@2b711097, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:37:30,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-28 03:37:30,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:37:30,156 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:37:30,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:37:30,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:30,157 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:37:30,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-28 03:37:30,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:30,166 INFO L85 PathProgramCache]: Analyzing trace with hash 267936, now seen corresponding path program 1 times [2024-11-28 03:37:30,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:30,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910899664] [2024-11-28 03:37:30,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:30,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:30,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910899664] [2024-11-28 03:37:30,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910899664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:30,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:30,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:37:30,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406861179] [2024-11-28 03:37:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:30,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:37:30,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:30,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:37:30,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:37:30,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-28 03:37:30,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 29 transitions, 62 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:30,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:30,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-28 03:37:30,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:30,504 INFO L124 PetriNetUnfolderBase]: 20/74 cut-off events. [2024-11-28 03:37:30,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:37:30,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 74 events. 20/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 14 based on Foata normal form. 6/74 useless extension candidates. Maximal degree in co-relation 110. Up to 44 conditions per place. [2024-11-28 03:37:30,509 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 12 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-28 03:37:30,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 74 flow [2024-11-28 03:37:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:37:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:37:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-11-28 03:37:30,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-11-28 03:37:30,526 INFO L175 Difference]: Start difference. First operand has 28 places, 29 transitions, 62 flow. Second operand 2 states and 39 transitions. [2024-11-28 03:37:30,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 74 flow [2024-11-28 03:37:30,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 74 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:37:30,535 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 50 flow [2024-11-28 03:37:30,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-11-28 03:37:30,544 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2024-11-28 03:37:30,544 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 50 flow [2024-11-28 03:37:30,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:30,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:30,544 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 03:37:30,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:37:30,546 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-28 03:37:30,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash -607204711, now seen corresponding path program 1 times [2024-11-28 03:37:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:30,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966797309] [2024-11-28 03:37:30,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:30,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:30,597 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:37:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:30,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:37:30,646 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:37:30,649 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-28 03:37:30,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-28 03:37:30,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-11-28 03:37:30,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-28 03:37:30,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-28 03:37:30,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-28 03:37:30,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-28 03:37:30,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-28 03:37:30,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:37:30,652 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 03:37:30,657 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:37:30,657 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:37:30,705 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:37:30,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 51 transitions, 112 flow [2024-11-28 03:37:30,738 INFO L124 PetriNetUnfolderBase]: 8/60 cut-off events. [2024-11-28 03:37:30,738 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:37:30,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 8/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 174 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-28 03:37:30,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 51 transitions, 112 flow [2024-11-28 03:37:30,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 51 transitions, 112 flow [2024-11-28 03:37:30,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:37:30,743 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=None, 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;@2b711097, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:37:30,743 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-28 03:37:30,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:37:30,748 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:37:30,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:37:30,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:30,748 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:37:30,749 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-28 03:37:30,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash 318579, now seen corresponding path program 1 times [2024-11-28 03:37:30,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:30,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407171602] [2024-11-28 03:37:30,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:30,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407171602] [2024-11-28 03:37:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407171602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:30,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:37:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465673528] [2024-11-28 03:37:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:30,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:37:30,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:30,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:37:30,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:37:30,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-28 03:37:30,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:30,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:30,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-28 03:37:30,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:31,105 INFO L124 PetriNetUnfolderBase]: 361/865 cut-off events. [2024-11-28 03:37:31,105 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-28 03:37:31,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 865 events. 361/865 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5171 event pairs, 294 based on Foata normal form. 140/940 useless extension candidates. Maximal degree in co-relation 778. Up to 564 conditions per place. [2024-11-28 03:37:31,118 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 21 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-28 03:37:31,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 136 flow [2024-11-28 03:37:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:37:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:37:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2024-11-28 03:37:31,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-11-28 03:37:31,124 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 112 flow. Second operand 2 states and 70 transitions. [2024-11-28 03:37:31,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 136 flow [2024-11-28 03:37:31,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:37:31,127 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 94 flow [2024-11-28 03:37:31,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-11-28 03:37:31,129 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-28 03:37:31,130 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 94 flow [2024-11-28 03:37:31,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:31,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:31,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:37:31,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:37:31,131 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-28 03:37:31,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash 902207911, now seen corresponding path program 1 times [2024-11-28 03:37:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:31,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748487075] [2024-11-28 03:37:31,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:31,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748487075] [2024-11-28 03:37:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748487075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:31,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:37:31,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298631547] [2024-11-28 03:37:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:31,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:37:31,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:31,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:37:31,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:37:31,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2024-11-28 03:37:31,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:31,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:31,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2024-11-28 03:37:31,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:31,572 INFO L124 PetriNetUnfolderBase]: 361/849 cut-off events. [2024-11-28 03:37:31,572 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-28 03:37:31,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 849 events. 361/849 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4974 event pairs, 294 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 1438. Up to 563 conditions per place. [2024-11-28 03:37:31,580 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 20 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2024-11-28 03:37:31,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 132 flow [2024-11-28 03:37:31,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:37:31,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:37:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-28 03:37:31,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5424836601307189 [2024-11-28 03:37:31,583 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 94 flow. Second operand 3 states and 83 transitions. [2024-11-28 03:37:31,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 132 flow [2024-11-28 03:37:31,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:37:31,585 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 92 flow [2024-11-28 03:37:31,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-28 03:37:31,588 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-28 03:37:31,588 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 92 flow [2024-11-28 03:37:31,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:31,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:31,588 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:37:31,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:37:31,588 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-28 03:37:31,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash 902207912, now seen corresponding path program 1 times [2024-11-28 03:37:31,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:31,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573106470] [2024-11-28 03:37:31,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:31,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:31,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:31,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573106470] [2024-11-28 03:37:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573106470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:31,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:37:31,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979225235] [2024-11-28 03:37:31,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:31,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:37:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:31,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:37:31,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:37:31,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-28 03:37:31,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:31,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:31,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-28 03:37:31,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:32,352 INFO L124 PetriNetUnfolderBase]: 477/1311 cut-off events. [2024-11-28 03:37:32,353 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 03:37:32,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 1311 events. 477/1311 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9374 event pairs, 258 based on Foata normal form. 27/1262 useless extension candidates. Maximal degree in co-relation 2120. Up to 563 conditions per place. [2024-11-28 03:37:32,363 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 41 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-11-28 03:37:32,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 242 flow [2024-11-28 03:37:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:37:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:37:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-28 03:37:32,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-28 03:37:32,366 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 92 flow. Second operand 5 states and 153 transitions. [2024-11-28 03:37:32,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 242 flow [2024-11-28 03:37:32,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:37:32,371 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 118 flow [2024-11-28 03:37:32,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-28 03:37:32,372 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-11-28 03:37:32,372 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 118 flow [2024-11-28 03:37:32,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:32,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:32,373 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 03:37:32,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:37:32,373 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-28 03:37:32,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1144716684, now seen corresponding path program 1 times [2024-11-28 03:37:32,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353912437] [2024-11-28 03:37:32,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:32,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:32,395 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:37:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:32,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:37:32,420 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:37:32,420 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-28 03:37:32,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2024-11-28 03:37:32,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2024-11-28 03:37:32,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (7 of 11 remaining) [2024-11-28 03:37:32,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2024-11-28 03:37:32,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2024-11-28 03:37:32,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2024-11-28 03:37:32,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2024-11-28 03:37:32,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2024-11-28 03:37:32,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2024-11-28 03:37:32,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2024-11-28 03:37:32,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:37:32,421 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 03:37:32,422 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:37:32,422 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 03:37:32,467 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:37:32,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 73 transitions, 164 flow [2024-11-28 03:37:32,481 INFO L124 PetriNetUnfolderBase]: 12/87 cut-off events. [2024-11-28 03:37:32,481 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 03:37:32,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 12/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2024-11-28 03:37:32,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 73 transitions, 164 flow [2024-11-28 03:37:32,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 73 transitions, 164 flow [2024-11-28 03:37:32,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:37:32,486 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=None, 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;@2b711097, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:37:32,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-28 03:37:32,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:37:32,489 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:37:32,490 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:37:32,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:32,490 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:37:32,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 03:37:32,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:32,490 INFO L85 PathProgramCache]: Analyzing trace with hash 391068, now seen corresponding path program 1 times [2024-11-28 03:37:32,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:32,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004363807] [2024-11-28 03:37:32,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:32,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:32,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:32,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004363807] [2024-11-28 03:37:32,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004363807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:32,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:32,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:37:32,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50405535] [2024-11-28 03:37:32,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:32,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:37:32,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:32,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:37:32,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:37:32,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-28 03:37:32,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:32,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:32,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-28 03:37:32,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:33,646 INFO L124 PetriNetUnfolderBase]: 4643/8805 cut-off events. [2024-11-28 03:37:33,647 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2024-11-28 03:37:33,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15351 conditions, 8805 events. 4643/8805 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 69456 event pairs, 3878 based on Foata normal form. 1869/10115 useless extension candidates. Maximal degree in co-relation 1471. Up to 6260 conditions per place. [2024-11-28 03:37:33,710 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 30 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2024-11-28 03:37:33,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 200 flow [2024-11-28 03:37:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:37:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:37:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 101 transitions. [2024-11-28 03:37:33,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6917808219178082 [2024-11-28 03:37:33,712 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 164 flow. Second operand 2 states and 101 transitions. [2024-11-28 03:37:33,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 200 flow [2024-11-28 03:37:33,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 198 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 03:37:33,715 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 138 flow [2024-11-28 03:37:33,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=138, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-28 03:37:33,715 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-28 03:37:33,715 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 138 flow [2024-11-28 03:37:33,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:33,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:33,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:37:33,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:37:33,716 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 03:37:33,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1232541486, now seen corresponding path program 1 times [2024-11-28 03:37:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:33,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401709944] [2024-11-28 03:37:33,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401709944] [2024-11-28 03:37:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401709944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:33,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:37:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518296725] [2024-11-28 03:37:33,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:33,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:37:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:33,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:37:33,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:37:33,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2024-11-28 03:37:33,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:33,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:33,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2024-11-28 03:37:33,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:34,885 INFO L124 PetriNetUnfolderBase]: 4643/8667 cut-off events. [2024-11-28 03:37:34,886 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2024-11-28 03:37:34,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15150 conditions, 8667 events. 4643/8667 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 66960 event pairs, 3878 based on Foata normal form. 0/8246 useless extension candidates. Maximal degree in co-relation 15144. Up to 6259 conditions per place. [2024-11-28 03:37:34,953 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 29 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2024-11-28 03:37:34,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 192 flow [2024-11-28 03:37:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:37:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:37:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-28 03:37:34,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-11-28 03:37:34,956 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 138 flow. Second operand 3 states and 120 transitions. [2024-11-28 03:37:34,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 192 flow [2024-11-28 03:37:34,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:37:34,961 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 134 flow [2024-11-28 03:37:34,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-28 03:37:34,961 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-11-28 03:37:34,961 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 134 flow [2024-11-28 03:37:34,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:34,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:34,962 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:37:34,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:37:34,962 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 03:37:34,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:34,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1232541485, now seen corresponding path program 1 times [2024-11-28 03:37:34,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:34,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818710089] [2024-11-28 03:37:34,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:34,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:35,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818710089] [2024-11-28 03:37:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818710089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:35,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:35,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:37:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725480391] [2024-11-28 03:37:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:35,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:37:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:35,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:37:35,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:37:35,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-28 03:37:35,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:35,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:35,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-28 03:37:35,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:36,743 INFO L124 PetriNetUnfolderBase]: 6278/13277 cut-off events. [2024-11-28 03:37:36,744 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2024-11-28 03:37:36,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22189 conditions, 13277 events. 6278/13277 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 123811 event pairs, 3878 based on Foata normal form. 219/12737 useless extension candidates. Maximal degree in co-relation 22182. Up to 6259 conditions per place. [2024-11-28 03:37:36,851 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 68 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-11-28 03:37:36,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 384 flow [2024-11-28 03:37:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:37:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:37:36,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-11-28 03:37:36,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6301369863013698 [2024-11-28 03:37:36,853 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 134 flow. Second operand 5 states and 230 transitions. [2024-11-28 03:37:36,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 384 flow [2024-11-28 03:37:36,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:37:36,858 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 160 flow [2024-11-28 03:37:36,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-28 03:37:36,860 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-11-28 03:37:36,860 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 160 flow [2024-11-28 03:37:36,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:36,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:36,861 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:36,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:37:36,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 03:37:36,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1882501151, now seen corresponding path program 1 times [2024-11-28 03:37:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:36,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591997215] [2024-11-28 03:37:36,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:36,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:37,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591997215] [2024-11-28 03:37:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591997215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:37,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:37,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:37:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212971515] [2024-11-28 03:37:37,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:37,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:37:37,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:37,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:37:37,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:37:37,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-28 03:37:37,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:37,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:37,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-28 03:37:37,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:39,054 INFO L124 PetriNetUnfolderBase]: 7752/16493 cut-off events. [2024-11-28 03:37:39,055 INFO L125 PetriNetUnfolderBase]: For 3947/4223 co-relation queries the response was YES. [2024-11-28 03:37:39,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30311 conditions, 16493 events. 7752/16493 cut-off events. For 3947/4223 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 158220 event pairs, 4542 based on Foata normal form. 270/15878 useless extension candidates. Maximal degree in co-relation 30302. Up to 7823 conditions per place. [2024-11-28 03:37:39,170 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 72 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2024-11-28 03:37:39,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 448 flow [2024-11-28 03:37:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:37:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:37:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-11-28 03:37:39,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6246575342465753 [2024-11-28 03:37:39,172 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 160 flow. Second operand 5 states and 228 transitions. [2024-11-28 03:37:39,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 448 flow [2024-11-28 03:37:39,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:37:39,179 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 186 flow [2024-11-28 03:37:39,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-11-28 03:37:39,180 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2024-11-28 03:37:39,180 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 186 flow [2024-11-28 03:37:39,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:39,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:39,180 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:39,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:37:39,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 03:37:39,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash -967543333, now seen corresponding path program 1 times [2024-11-28 03:37:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:39,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309031679] [2024-11-28 03:37:39,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:39,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309031679] [2024-11-28 03:37:39,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309031679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:39,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094903417] [2024-11-28 03:37:39,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:39,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:39,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:39,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:37:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:39,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:37:39,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:39,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:40,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094903417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:40,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:40,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-28 03:37:40,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948756989] [2024-11-28 03:37:40,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:40,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:37:40,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:40,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:37:40,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:37:40,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-28 03:37:40,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 186 flow. Second operand has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:40,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:40,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-28 03:37:40,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:42,809 INFO L124 PetriNetUnfolderBase]: 12261/26579 cut-off events. [2024-11-28 03:37:42,810 INFO L125 PetriNetUnfolderBase]: For 8311/8671 co-relation queries the response was YES. [2024-11-28 03:37:42,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52025 conditions, 26579 events. 12261/26579 cut-off events. For 8311/8671 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 276621 event pairs, 4896 based on Foata normal form. 273/25859 useless extension candidates. Maximal degree in co-relation 52014. Up to 8084 conditions per place. [2024-11-28 03:37:42,982 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 101 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2024-11-28 03:37:42,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 135 transitions, 640 flow [2024-11-28 03:37:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:37:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:37:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 287 transitions. [2024-11-28 03:37:42,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6552511415525114 [2024-11-28 03:37:42,984 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 186 flow. Second operand 6 states and 287 transitions. [2024-11-28 03:37:42,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 135 transitions, 640 flow [2024-11-28 03:37:42,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 135 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:37:42,992 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 226 flow [2024-11-28 03:37:42,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-11-28 03:37:42,993 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2024-11-28 03:37:42,993 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 226 flow [2024-11-28 03:37:42,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:42,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:42,994 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:43,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:37:43,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd9ecbb-e53c-4525-a082-772a37a40ebb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 03:37:43,198 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 03:37:43,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash 70907290, now seen corresponding path program 1 times [2024-11-28 03:37:43,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:43,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682506815] [2024-11-28 03:37:43,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:43,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:43,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682506815] [2024-11-28 03:37:43,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682506815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:43,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:43,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:37:43,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386385424] [2024-11-28 03:37:43,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:43,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:37:43,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:43,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:37:43,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:37:43,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-28 03:37:43,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:43,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:43,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-28 03:37:43,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:44,867 INFO L124 PetriNetUnfolderBase]: 11549/21259 cut-off events. [2024-11-28 03:37:44,867 INFO L125 PetriNetUnfolderBase]: For 11284/11659 co-relation queries the response was YES. [2024-11-28 03:37:44,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48993 conditions, 21259 events. 11549/21259 cut-off events. For 11284/11659 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 185032 event pairs, 1666 based on Foata normal form. 819/21361 useless extension candidates. Maximal degree in co-relation 48980. Up to 12961 conditions per place. [2024-11-28 03:37:45,021 INFO L140 encePairwiseOnDemand]: 70/73 looper letters, 56 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-28 03:37:45,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 414 flow [2024-11-28 03:37:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:37:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:37:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-28 03:37:45,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6621004566210046 [2024-11-28 03:37:45,023 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 226 flow. Second operand 3 states and 145 transitions. [2024-11-28 03:37:45,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 414 flow [2024-11-28 03:37:45,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:37:45,077 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 227 flow [2024-11-28 03:37:45,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-11-28 03:37:45,078 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2024-11-28 03:37:45,078 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 227 flow [2024-11-28 03:37:45,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:45,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:45,078 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 03:37:45,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:37:45,079 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 03:37:45,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash 555373208, now seen corresponding path program 1 times [2024-11-28 03:37:45,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401935820] [2024-11-28 03:37:45,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:45,089 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:37:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:37:45,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:37:45,100 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:37:45,100 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (10 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-28 03:37:45,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (3 of 14 remaining) [2024-11-28 03:37:45,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-28 03:37:45,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-28 03:37:45,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2024-11-28 03:37:45,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:37:45,102 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:45,103 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:37:45,103 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 03:37:45,140 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:37:45,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 95 transitions, 218 flow [2024-11-28 03:37:45,151 INFO L124 PetriNetUnfolderBase]: 16/114 cut-off events. [2024-11-28 03:37:45,152 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 03:37:45,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 114 events. 16/114 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 397 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2024-11-28 03:37:45,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 95 transitions, 218 flow [2024-11-28 03:37:45,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 95 transitions, 218 flow [2024-11-28 03:37:45,155 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:37:45,155 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=None, 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;@2b711097, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:37:45,155 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 03:37:45,157 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:37:45,157 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:37:45,157 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:37:45,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:45,157 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:37:45,157 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-28 03:37:45,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash 485403, now seen corresponding path program 1 times [2024-11-28 03:37:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972187544] [2024-11-28 03:37:45,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:45,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:45,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972187544] [2024-11-28 03:37:45,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972187544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:45,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:45,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:37:45,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145940431] [2024-11-28 03:37:45,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:45,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:37:45,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:45,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:37:45,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:37:45,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 95 [2024-11-28 03:37:45,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 218 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:45,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:45,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 95 [2024-11-28 03:37:45,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:51,167 INFO L124 PetriNetUnfolderBase]: 51169/84541 cut-off events. [2024-11-28 03:37:51,167 INFO L125 PetriNetUnfolderBase]: For 6918/6918 co-relation queries the response was YES. [2024-11-28 03:37:51,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151504 conditions, 84541 events. 51169/84541 cut-off events. For 6918/6918 co-relation queries the response was YES. Maximal size of possible extension queue 3512. Compared 774182 event pairs, 43302 based on Foata normal form. 21913/101952 useless extension candidates. Maximal degree in co-relation 15419. Up to 64116 conditions per place. [2024-11-28 03:37:51,594 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 39 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2024-11-28 03:37:51,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 266 flow [2024-11-28 03:37:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:37:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:37:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2024-11-28 03:37:51,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6947368421052632 [2024-11-28 03:37:51,595 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 218 flow. Second operand 2 states and 132 transitions. [2024-11-28 03:37:51,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 266 flow [2024-11-28 03:37:51,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 260 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 03:37:51,600 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 182 flow [2024-11-28 03:37:51,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-11-28 03:37:51,601 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2024-11-28 03:37:51,601 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 182 flow [2024-11-28 03:37:51,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:51,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:51,601 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:37:51,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:37:51,602 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-28 03:37:51,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1578533298, now seen corresponding path program 1 times [2024-11-28 03:37:51,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:51,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347029168] [2024-11-28 03:37:51,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:51,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:51,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347029168] [2024-11-28 03:37:51,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347029168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:51,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:51,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:37:51,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465770746] [2024-11-28 03:37:51,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:51,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:37:51,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:51,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:37:51,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:37:51,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 95 [2024-11-28 03:37:51,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:51,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:51,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 95 [2024-11-28 03:37:51,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:57,645 INFO L124 PetriNetUnfolderBase]: 51169/83445 cut-off events. [2024-11-28 03:37:57,645 INFO L125 PetriNetUnfolderBase]: For 3210/3210 co-relation queries the response was YES. [2024-11-28 03:37:57,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149321 conditions, 83445 events. 51169/83445 cut-off events. For 3210/3210 co-relation queries the response was YES. Maximal size of possible extension queue 3435. Compared 748507 event pairs, 43302 based on Foata normal form. 0/80039 useless extension candidates. Maximal degree in co-relation 149314. Up to 64115 conditions per place. [2024-11-28 03:37:58,075 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 38 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2024-11-28 03:37:58,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 252 flow [2024-11-28 03:37:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:37:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:37:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-11-28 03:37:58,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5508771929824562 [2024-11-28 03:37:58,077 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 182 flow. Second operand 3 states and 157 transitions. [2024-11-28 03:37:58,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 252 flow [2024-11-28 03:37:58,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:37:58,083 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 176 flow [2024-11-28 03:37:58,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-11-28 03:37:58,084 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -8 predicate places. [2024-11-28 03:37:58,084 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 176 flow [2024-11-28 03:37:58,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:58,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:58,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:37:58,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:37:58,085 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-28 03:37:58,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1578533299, now seen corresponding path program 1 times [2024-11-28 03:37:58,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:58,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482663804] [2024-11-28 03:37:58,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:58,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:58,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:58,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482663804] [2024-11-28 03:37:58,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482663804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:58,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:58,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:37:58,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782315173] [2024-11-28 03:37:58,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:58,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:37:58,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:58,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:37:58,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:37:58,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 95 [2024-11-28 03:37:58,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:58,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:58,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 95 [2024-11-28 03:37:58,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:38:07,604 INFO L124 PetriNetUnfolderBase]: 68988/124720 cut-off events. [2024-11-28 03:38:07,604 INFO L125 PetriNetUnfolderBase]: For 3901/3901 co-relation queries the response was YES. [2024-11-28 03:38:07,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215297 conditions, 124720 events. 68988/124720 cut-off events. For 3901/3901 co-relation queries the response was YES. Maximal size of possible extension queue 5083. Compared 1338133 event pairs, 36054 based on Foata normal form. 1755/120612 useless extension candidates. Maximal degree in co-relation 215289. Up to 64115 conditions per place. [2024-11-28 03:38:08,347 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 95 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2024-11-28 03:38:08,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 136 transitions, 526 flow [2024-11-28 03:38:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:38:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 307 transitions. [2024-11-28 03:38:08,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6463157894736842 [2024-11-28 03:38:08,350 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 176 flow. Second operand 5 states and 307 transitions. [2024-11-28 03:38:08,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 136 transitions, 526 flow [2024-11-28 03:38:08,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:38:08,362 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 202 flow [2024-11-28 03:38:08,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2024-11-28 03:38:08,363 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2024-11-28 03:38:08,363 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 202 flow [2024-11-28 03:38:08,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:08,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:38:08,363 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:08,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:38:08,363 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-28 03:38:08,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1046439339, now seen corresponding path program 1 times [2024-11-28 03:38:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043404385] [2024-11-28 03:38:08,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:08,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:08,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043404385] [2024-11-28 03:38:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043404385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:08,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:38:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613889069] [2024-11-28 03:38:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:08,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:38:08,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:08,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:38:08,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:38:08,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 95 [2024-11-28 03:38:08,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:08,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:38:08,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 95 [2024-11-28 03:38:08,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand