./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.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_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/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_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/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_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:26,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:26,193 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:07:26,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:26,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:26,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:26,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:26,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:26,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:26,228 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:26,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:26,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:26,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:26,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:26,229 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:26,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:26,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:26,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:26,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:26,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:26,231 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:26,231 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:26,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:26,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:26,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:26,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:26,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:26,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:26,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:26,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:26,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:26,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:26,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:26,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:26,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:26,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:26,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:26,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:26,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:26,233 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_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/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 -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2024-11-28 02:07:26,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:26,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:26,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:26,541 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:26,541 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:26,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-11-28 02:07:29,530 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/data/b004a12f0/92e366e7bf1744ea9e871d6c37fa7d2a/FLAG0261e7eda [2024-11-28 02:07:30,021 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:30,022 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-11-28 02:07:30,049 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/data/b004a12f0/92e366e7bf1744ea9e871d6c37fa7d2a/FLAG0261e7eda [2024-11-28 02:07:30,069 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/data/b004a12f0/92e366e7bf1744ea9e871d6c37fa7d2a [2024-11-28 02:07:30,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:30,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:30,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:30,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:30,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:30,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:30,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5221e2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30, skipping insertion in model container [2024-11-28 02:07:30,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:30,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:30,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:30,768 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:30,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:30,951 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:30,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30 WrapperNode [2024-11-28 02:07:30,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:30,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:30,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:30,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:30,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:30,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,005 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 257 [2024-11-28 02:07:31,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:31,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:31,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:31,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:31,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,020 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,045 INFO L175 MemorySlicer]: Split 47 memory accesses to 7 slices as follows [2, 5, 20, 5, 8, 2, 5]. 43 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 0, 5, 1, 0, 5]. The 16 writes are split as follows [0, 0, 12, 0, 3, 1, 0]. [2024-11-28 02:07:31,046 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,061 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:31,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:31,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:31,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:31,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (1/1) ... [2024-11-28 02:07:31,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:31,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:31,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:31,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d6a6b6-3586-4b14-9c87-8a64ad5ea18e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:07:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:07:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:07:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:07:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:07:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:07:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 02:07:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 02:07:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:07:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:07:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:07:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:07:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:07:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:07:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 02:07:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 02:07:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:07:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:07:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:07:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:07:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:07:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:07:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:07:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:07:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:07:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 02:07:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 02:07:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 02:07:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 02:07:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:07:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:07:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:07:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:07:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:07:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:07:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:07:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:07:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:31,163 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 02:07:31,398 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:31,400 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:31,986 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:07:31,986 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:32,280 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:32,281 INFO L312 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-28 02:07:32,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:32 BoogieIcfgContainer [2024-11-28 02:07:32,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:32,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:32,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:32,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:32,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:30" (1/3) ... [2024-11-28 02:07:32,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7036a08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:32, skipping insertion in model container [2024-11-28 02:07:32,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:30" (2/3) ... [2024-11-28 02:07:32,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7036a08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:32, skipping insertion in model container [2024-11-28 02:07:32,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:32" (3/3) ... [2024-11-28 02:07:32,294 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2024-11-28 02:07:32,310 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:32,311 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_94-alloc_region_racing.i that has 2 procedures, 168 locations, 1 initial locations, 13 loop locations, and 61 error locations. [2024-11-28 02:07:32,312 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:07:32,451 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 02:07:32,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 197 transitions, 401 flow [2024-11-28 02:07:32,629 INFO L124 PetriNetUnfolderBase]: 44/298 cut-off events. [2024-11-28 02:07:32,634 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:07:32,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 298 events. 44/298 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1440 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2024-11-28 02:07:32,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 197 transitions, 401 flow [2024-11-28 02:07:32,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 197 transitions, 401 flow [2024-11-28 02:07:32,669 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:32,686 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;@1257ebad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:32,688 INFO L334 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2024-11-28 02:07:32,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:32,694 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-28 02:07:32,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:32,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:32,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 02:07:32,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:32,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash 24239, now seen corresponding path program 1 times [2024-11-28 02:07:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469146449] [2024-11-28 02:07:32,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:32,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:33,088 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 02:07:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469146449] [2024-11-28 02:07:33,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469146449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:33,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:33,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:33,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594572209] [2024-11-28 02:07:33,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:33,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:33,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:33,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:33,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 197 [2024-11-28 02:07:33,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 197 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 02:07:33,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:33,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 197 [2024-11-28 02:07:33,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:34,281 INFO L124 PetriNetUnfolderBase]: 947/3321 cut-off events. [2024-11-28 02:07:34,281 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:07:34,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5178 conditions, 3321 events. 947/3321 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 27012 event pairs, 806 based on Foata normal form. 518/3341 useless extension candidates. Maximal degree in co-relation 5031. Up to 1743 conditions per place. [2024-11-28 02:07:34,316 INFO L140 encePairwiseOnDemand]: 167/197 looper letters, 91 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2024-11-28 02:07:34,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 193 transitions, 579 flow [2024-11-28 02:07:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2024-11-28 02:07:34,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7326565143824028 [2024-11-28 02:07:34,338 INFO L175 Difference]: Start difference. First operand has 171 places, 197 transitions, 401 flow. Second operand 3 states and 433 transitions. [2024-11-28 02:07:34,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 193 transitions, 579 flow [2024-11-28 02:07:34,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 193 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:34,356 INFO L231 Difference]: Finished difference. Result has 168 places, 167 transitions, 345 flow [2024-11-28 02:07:34,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=168, PETRI_TRANSITIONS=167} [2024-11-28 02:07:34,366 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -3 predicate places. [2024-11-28 02:07:34,367 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 167 transitions, 345 flow [2024-11-28 02:07:34,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 02:07:34,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:34,367 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 02:07:34,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:07:34,369 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:34,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash 24240, now seen corresponding path program 1 times [2024-11-28 02:07:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:34,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396158324] [2024-11-28 02:07:34,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:34,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:34,645 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 02:07:34,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396158324] [2024-11-28 02:07:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396158324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:34,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:34,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:34,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723887555] [2024-11-28 02:07:34,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:34,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:34,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:34,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:34,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:34,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 197 [2024-11-28 02:07:34,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 167 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 02:07:34,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:34,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 197 [2024-11-28 02:07:34,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:35,500 INFO L124 PetriNetUnfolderBase]: 976/3413 cut-off events. [2024-11-28 02:07:35,500 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 02:07:35,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5354 conditions, 3413 events. 976/3413 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 27990 event pairs, 884 based on Foata normal form. 0/2877 useless extension candidates. Maximal degree in co-relation 5205. Up to 1903 conditions per place. [2024-11-28 02:07:35,521 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 66 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2024-11-28 02:07:35,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 165 transitions, 477 flow [2024-11-28 02:07:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2024-11-28 02:07:35,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.626057529610829 [2024-11-28 02:07:35,525 INFO L175 Difference]: Start difference. First operand has 168 places, 167 transitions, 345 flow. Second operand 3 states and 370 transitions. [2024-11-28 02:07:35,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 165 transitions, 477 flow [2024-11-28 02:07:35,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 473 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:35,531 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 341 flow [2024-11-28 02:07:35,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2024-11-28 02:07:35,532 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -5 predicate places. [2024-11-28 02:07:35,532 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 341 flow [2024-11-28 02:07:35,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 02:07:35,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:35,533 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 02:07:35,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:07:35,533 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:35,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash 23321891, now seen corresponding path program 1 times [2024-11-28 02:07:35,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:35,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940742766] [2024-11-28 02:07:35,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:35,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:35,736 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 02:07:35,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:35,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940742766] [2024-11-28 02:07:35,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940742766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:35,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:35,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674728407] [2024-11-28 02:07:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:35,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:35,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:35,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:35,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 197 [2024-11-28 02:07:35,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 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 02:07:35,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:35,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 197 [2024-11-28 02:07:35,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:36,818 INFO L124 PetriNetUnfolderBase]: 976/3379 cut-off events. [2024-11-28 02:07:36,818 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:07:36,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5294 conditions, 3379 events. 976/3379 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27361 event pairs, 555 based on Foata normal form. 1/2920 useless extension candidates. Maximal degree in co-relation 5276. Up to 1717 conditions per place. [2024-11-28 02:07:36,835 INFO L140 encePairwiseOnDemand]: 185/197 looper letters, 99 selfloop transitions, 11 changer transitions 0/202 dead transitions. [2024-11-28 02:07:36,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 202 transitions, 635 flow [2024-11-28 02:07:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:07:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:07:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2024-11-28 02:07:36,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5905245346869712 [2024-11-28 02:07:36,839 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 341 flow. Second operand 6 states and 698 transitions. [2024-11-28 02:07:36,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 202 transitions, 635 flow [2024-11-28 02:07:36,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 202 transitions, 631 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:36,850 INFO L231 Difference]: Finished difference. Result has 166 places, 166 transitions, 372 flow [2024-11-28 02:07:36,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=166, PETRI_TRANSITIONS=166} [2024-11-28 02:07:36,853 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -5 predicate places. [2024-11-28 02:07:36,853 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 166 transitions, 372 flow [2024-11-28 02:07:36,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 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 02:07:36,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:36,854 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 02:07:36,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:07:36,854 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:36,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:36,855 INFO L85 PathProgramCache]: Analyzing trace with hash 23321892, now seen corresponding path program 1 times [2024-11-28 02:07:36,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:36,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609729255] [2024-11-28 02:07:36,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:36,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:37,176 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 02:07:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:37,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609729255] [2024-11-28 02:07:37,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609729255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:37,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:37,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:37,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167026125] [2024-11-28 02:07:37,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:37,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:37,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:37,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:37,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:37,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 197 [2024-11-28 02:07:37,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 166 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 02:07:37,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:37,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 197 [2024-11-28 02:07:37,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:38,155 INFO L124 PetriNetUnfolderBase]: 949/3289 cut-off events. [2024-11-28 02:07:38,156 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-28 02:07:38,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5292 conditions, 3289 events. 949/3289 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 26663 event pairs, 790 based on Foata normal form. 58/2920 useless extension candidates. Maximal degree in co-relation 5143. Up to 1795 conditions per place. [2024-11-28 02:07:38,210 INFO L140 encePairwiseOnDemand]: 187/197 looper letters, 89 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2024-11-28 02:07:38,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 187 transitions, 608 flow [2024-11-28 02:07:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:07:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:07:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 691 transitions. [2024-11-28 02:07:38,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5846023688663282 [2024-11-28 02:07:38,218 INFO L175 Difference]: Start difference. First operand has 166 places, 166 transitions, 372 flow. Second operand 6 states and 691 transitions. [2024-11-28 02:07:38,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 187 transitions, 608 flow [2024-11-28 02:07:38,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 187 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:38,223 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 378 flow [2024-11-28 02:07:38,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2024-11-28 02:07:38,225 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -5 predicate places. [2024-11-28 02:07:38,225 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 378 flow [2024-11-28 02:07:38,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 02:07:38,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:38,226 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:38,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:07:38,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:38,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1001439828, now seen corresponding path program 1 times [2024-11-28 02:07:38,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:38,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811326137] [2024-11-28 02:07:38,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:38,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:38,294 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 02:07:38,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:38,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811326137] [2024-11-28 02:07:38,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811326137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:38,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:38,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:38,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265880530] [2024-11-28 02:07:38,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:38,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:38,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:38,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:38,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 197 [2024-11-28 02:07:38,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 02:07:38,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:38,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 197 [2024-11-28 02:07:38,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:38,871 INFO L124 PetriNetUnfolderBase]: 1001/3419 cut-off events. [2024-11-28 02:07:38,871 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-11-28 02:07:38,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5593 conditions, 3419 events. 1001/3419 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 27899 event pairs, 795 based on Foata normal form. 0/2992 useless extension candidates. Maximal degree in co-relation 5438. Up to 1848 conditions per place. [2024-11-28 02:07:38,896 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 98 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2024-11-28 02:07:38,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 186 transitions, 628 flow [2024-11-28 02:07:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2024-11-28 02:07:38,898 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:07:38,898 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 378 flow. Second operand 3 states and 394 transitions. [2024-11-28 02:07:38,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 186 transitions, 628 flow [2024-11-28 02:07:38,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 186 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:07:38,905 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 362 flow [2024-11-28 02:07:38,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2024-11-28 02:07:38,907 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -10 predicate places. [2024-11-28 02:07:38,907 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 362 flow [2024-11-28 02:07:38,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 02:07:38,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:38,908 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:38,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:07:38,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:38,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1001439827, now seen corresponding path program 1 times [2024-11-28 02:07:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:38,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590657013] [2024-11-28 02:07:38,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:38,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:39,066 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 02:07:39,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:39,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590657013] [2024-11-28 02:07:39,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590657013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:39,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398041573] [2024-11-28 02:07:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:39,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:39,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:39,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:39,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:39,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 197 [2024-11-28 02:07:39,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 02:07:39,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:39,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 197 [2024-11-28 02:07:39,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:39,732 INFO L124 PetriNetUnfolderBase]: 973/3299 cut-off events. [2024-11-28 02:07:39,733 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-28 02:07:39,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5353 conditions, 3299 events. 973/3299 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 26637 event pairs, 790 based on Foata normal form. 2/2855 useless extension candidates. Maximal degree in co-relation 5311. Up to 1874 conditions per place. [2024-11-28 02:07:39,749 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 73 selfloop transitions, 3 changer transitions 0/163 dead transitions. [2024-11-28 02:07:39,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 520 flow [2024-11-28 02:07:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2024-11-28 02:07:39,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6412859560067682 [2024-11-28 02:07:39,751 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 362 flow. Second operand 3 states and 379 transitions. [2024-11-28 02:07:39,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 520 flow [2024-11-28 02:07:39,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 163 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:39,755 INFO L231 Difference]: Finished difference. Result has 162 places, 162 transitions, 379 flow [2024-11-28 02:07:39,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=162, PETRI_TRANSITIONS=162} [2024-11-28 02:07:39,756 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -9 predicate places. [2024-11-28 02:07:39,756 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 162 transitions, 379 flow [2024-11-28 02:07:39,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 02:07:39,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:39,757 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:39,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:07:39,757 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:39,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:39,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1050154983, now seen corresponding path program 1 times [2024-11-28 02:07:39,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:39,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921983223] [2024-11-28 02:07:39,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:39,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:39,860 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 02:07:39,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:39,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921983223] [2024-11-28 02:07:39,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921983223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:39,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:39,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:39,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539978171] [2024-11-28 02:07:39,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:39,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:39,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:39,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:39,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:39,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 197 [2024-11-28 02:07:39,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 162 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 02:07:39,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:39,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 197 [2024-11-28 02:07:39,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:40,447 INFO L124 PetriNetUnfolderBase]: 986/3318 cut-off events. [2024-11-28 02:07:40,448 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2024-11-28 02:07:40,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 3318 events. 986/3318 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 26633 event pairs, 733 based on Foata normal form. 0/2879 useless extension candidates. Maximal degree in co-relation 5409. Up to 1769 conditions per place. [2024-11-28 02:07:40,495 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 108 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2024-11-28 02:07:40,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 198 transitions, 690 flow [2024-11-28 02:07:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2024-11-28 02:07:40,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6903553299492385 [2024-11-28 02:07:40,497 INFO L175 Difference]: Start difference. First operand has 162 places, 162 transitions, 379 flow. Second operand 3 states and 408 transitions. [2024-11-28 02:07:40,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 198 transitions, 690 flow [2024-11-28 02:07:40,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 198 transitions, 687 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:40,502 INFO L231 Difference]: Finished difference. Result has 165 places, 165 transitions, 412 flow [2024-11-28 02:07:40,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=165, PETRI_TRANSITIONS=165} [2024-11-28 02:07:40,503 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -6 predicate places. [2024-11-28 02:07:40,504 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 165 transitions, 412 flow [2024-11-28 02:07:40,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 02:07:40,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,505 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:40,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:07:40,505 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:40,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1050154982, now seen corresponding path program 1 times [2024-11-28 02:07:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:40,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789854321] [2024-11-28 02:07:40,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:40,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:40,643 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 02:07:40,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:40,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789854321] [2024-11-28 02:07:40,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789854321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:40,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:40,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:40,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509198721] [2024-11-28 02:07:40,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:40,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:40,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:40,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:40,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:40,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 197 [2024-11-28 02:07:40,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 165 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 02:07:40,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:40,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 197 [2024-11-28 02:07:40,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:41,211 INFO L124 PetriNetUnfolderBase]: 950/3198 cut-off events. [2024-11-28 02:07:41,211 INFO L125 PetriNetUnfolderBase]: For 513/544 co-relation queries the response was YES. [2024-11-28 02:07:41,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5431 conditions, 3198 events. 950/3198 cut-off events. For 513/544 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 25666 event pairs, 701 based on Foata normal form. 73/2849 useless extension candidates. Maximal degree in co-relation 5386. Up to 1760 conditions per place. [2024-11-28 02:07:41,226 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 105 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2024-11-28 02:07:41,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 196 transitions, 705 flow [2024-11-28 02:07:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2024-11-28 02:07:41,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6869712351945855 [2024-11-28 02:07:41,229 INFO L175 Difference]: Start difference. First operand has 165 places, 165 transitions, 412 flow. Second operand 3 states and 406 transitions. [2024-11-28 02:07:41,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 196 transitions, 705 flow [2024-11-28 02:07:41,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 196 transitions, 695 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:41,233 INFO L231 Difference]: Finished difference. Result has 163 places, 163 transitions, 406 flow [2024-11-28 02:07:41,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=163, PETRI_TRANSITIONS=163} [2024-11-28 02:07:41,234 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -8 predicate places. [2024-11-28 02:07:41,234 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 163 transitions, 406 flow [2024-11-28 02:07:41,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 02:07:41,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:41,235 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:41,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:07:41,235 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:41,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1804803737, now seen corresponding path program 1 times [2024-11-28 02:07:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:41,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463021799] [2024-11-28 02:07:41,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:41,375 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 02:07:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463021799] [2024-11-28 02:07:41,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463021799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:41,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:41,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796293009] [2024-11-28 02:07:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:41,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:41,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:41,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:41,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 197 [2024-11-28 02:07:41,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 163 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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 02:07:41,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:41,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 197 [2024-11-28 02:07:41,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:42,020 INFO L124 PetriNetUnfolderBase]: 941/3165 cut-off events. [2024-11-28 02:07:42,021 INFO L125 PetriNetUnfolderBase]: For 357/390 co-relation queries the response was YES. [2024-11-28 02:07:42,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5302 conditions, 3165 events. 941/3165 cut-off events. For 357/390 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 25431 event pairs, 780 based on Foata normal form. 3/2750 useless extension candidates. Maximal degree in co-relation 5256. Up to 1813 conditions per place. [2024-11-28 02:07:42,034 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 75 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2024-11-28 02:07:42,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 165 transitions, 568 flow [2024-11-28 02:07:42,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:07:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 482 transitions. [2024-11-28 02:07:42,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6116751269035533 [2024-11-28 02:07:42,036 INFO L175 Difference]: Start difference. First operand has 163 places, 163 transitions, 406 flow. Second operand 4 states and 482 transitions. [2024-11-28 02:07:42,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 165 transitions, 568 flow [2024-11-28 02:07:42,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:42,040 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 412 flow [2024-11-28 02:07:42,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2024-11-28 02:07:42,041 INFO L279 CegarLoopForPetriNet]: 171 programPoint places, -6 predicate places. [2024-11-28 02:07:42,041 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 412 flow [2024-11-28 02:07:42,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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 02:07:42,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:42,042 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:42,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:07:42,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-28 02:07:42,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 114341898, now seen corresponding path program 1 times [2024-11-28 02:07:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322316938] [2024-11-28 02:07:42,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:42,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:42,076 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:42,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:42,113 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:42,114 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (82 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 83 remaining) [2024-11-28 02:07:42,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 83 remaining) [2024-11-28 02:07:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK (53 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (42 of 83 remaining) [2024-11-28 02:07:42,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 83 remaining) [2024-11-28 02:07:42,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr20ASSERT_VIOLATIONMEMORY_LEAK (21 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 83 remaining) [2024-11-28 02:07:42,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 83 remaining) [2024-11-28 02:07:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 83 remaining) [2024-11-28 02:07:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 83 remaining) [2024-11-28 02:07:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 83 remaining) [2024-11-28 02:07:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 83 remaining) [2024-11-28 02:07:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 83 remaining) [2024-11-28 02:07:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 83 remaining) [2024-11-28 02:07:42,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 83 remaining) [2024-11-28 02:07:42,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 83 remaining) [2024-11-28 02:07:42,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 83 remaining) [2024-11-28 02:07:42,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 83 remaining) [2024-11-28 02:07:42,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 83 remaining) [2024-11-28 02:07:42,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 83 remaining) [2024-11-28 02:07:42,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:07:42,128 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:42,132 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:42,132 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:07:42,209 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:07:42,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 277 transitions, 570 flow [2024-11-28 02:07:42,265 INFO L124 PetriNetUnfolderBase]: 74/491 cut-off events. [2024-11-28 02:07:42,266 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 02:07:42,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 491 events. 74/491 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2813 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 300. Up to 12 conditions per place. [2024-11-28 02:07:42,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 277 transitions, 570 flow [2024-11-28 02:07:42,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 277 transitions, 570 flow [2024-11-28 02:07:42,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:42,277 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;@1257ebad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:42,278 INFO L334 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2024-11-28 02:07:42,279 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:42,279 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-28 02:07:42,279 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:42,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:42,279 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 02:07:42,279 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-28 02:07:42,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash 33103, now seen corresponding path program 1 times [2024-11-28 02:07:42,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:42,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605861543] [2024-11-28 02:07:42,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:42,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:42,319 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 02:07:42,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:42,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605861543] [2024-11-28 02:07:42,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605861543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:42,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:42,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598576288] [2024-11-28 02:07:42,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:42,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:42,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:42,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:42,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:42,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 277 [2024-11-28 02:07:42,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 277 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 02:07:42,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:42,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 277 [2024-11-28 02:07:42,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:52,429 INFO L124 PetriNetUnfolderBase]: 51356/114752 cut-off events. [2024-11-28 02:07:52,429 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-28 02:07:52,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190506 conditions, 114752 events. 51356/114752 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 2262. Compared 1352336 event pairs, 45110 based on Foata normal form. 21797/123068 useless extension candidates. Maximal degree in co-relation 171288. Up to 71103 conditions per place. [2024-11-28 02:07:53,113 INFO L140 encePairwiseOnDemand]: 235/277 looper letters, 145 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2024-11-28 02:07:53,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 286 transitions, 882 flow [2024-11-28 02:07:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2024-11-28 02:07:53,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7557160048134778 [2024-11-28 02:07:53,115 INFO L175 Difference]: Start difference. First operand has 239 places, 277 transitions, 570 flow. Second operand 3 states and 628 transitions. [2024-11-28 02:07:53,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 286 transitions, 882 flow [2024-11-28 02:07:53,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 286 transitions, 882 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:53,123 INFO L231 Difference]: Finished difference. Result has 235 places, 234 transitions, 488 flow [2024-11-28 02:07:53,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=235, PETRI_TRANSITIONS=234} [2024-11-28 02:07:53,125 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, -4 predicate places. [2024-11-28 02:07:53,125 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 234 transitions, 488 flow [2024-11-28 02:07:53,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 02:07:53,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:53,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 02:07:53,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:07:53,126 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-28 02:07:53,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash 33104, now seen corresponding path program 1 times [2024-11-28 02:07:53,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:53,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96095630] [2024-11-28 02:07:53,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:53,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:53,219 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 02:07:53,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96095630] [2024-11-28 02:07:53,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96095630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:53,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:53,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853575242] [2024-11-28 02:07:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:53,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:53,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:53,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:53,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:53,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 277 [2024-11-28 02:07:53,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 234 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 02:07:53,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:53,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 277 [2024-11-28 02:07:53,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:03,711 INFO L124 PetriNetUnfolderBase]: 52925/119063 cut-off events. [2024-11-28 02:08:03,711 INFO L125 PetriNetUnfolderBase]: For 751/751 co-relation queries the response was YES. [2024-11-28 02:08:03,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197803 conditions, 119063 events. 52925/119063 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 2367. Compared 1416463 event pairs, 49452 based on Foata normal form. 0/104309 useless extension candidates. Maximal degree in co-relation 186104. Up to 77809 conditions per place. [2024-11-28 02:08:04,274 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 94 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2024-11-28 02:08:04,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 232 transitions, 676 flow [2024-11-28 02:08:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:08:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2024-11-28 02:08:04,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197352587244284 [2024-11-28 02:08:04,277 INFO L175 Difference]: Start difference. First operand has 235 places, 234 transitions, 488 flow. Second operand 3 states and 515 transitions. [2024-11-28 02:08:04,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 232 transitions, 676 flow [2024-11-28 02:08:04,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 232 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:08:04,352 INFO L231 Difference]: Finished difference. Result has 233 places, 232 transitions, 484 flow [2024-11-28 02:08:04,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=233, PETRI_TRANSITIONS=232} [2024-11-28 02:08:04,353 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, -6 predicate places. [2024-11-28 02:08:04,353 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 232 transitions, 484 flow [2024-11-28 02:08:04,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 02:08:04,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:04,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 02:08:04,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:08:04,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-28 02:08:04,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:04,355 INFO L85 PathProgramCache]: Analyzing trace with hash 31849059, now seen corresponding path program 1 times [2024-11-28 02:08:04,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:04,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471436410] [2024-11-28 02:08:04,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:04,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:04,463 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 02:08:04,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:04,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471436410] [2024-11-28 02:08:04,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471436410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:04,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:04,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:04,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139938161] [2024-11-28 02:08:04,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:04,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:08:04,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:04,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:08:04,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:08:04,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 277 [2024-11-28 02:08:04,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 232 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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 02:08:04,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:04,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 277 [2024-11-28 02:08:04,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:15,270 INFO L124 PetriNetUnfolderBase]: 52925/117701 cut-off events. [2024-11-28 02:08:15,271 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-28 02:08:15,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195659 conditions, 117701 events. 52925/117701 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 2276. Compared 1381969 event pairs, 33621 based on Foata normal form. 1/104855 useless extension candidates. Maximal degree in co-relation 195640. Up to 72689 conditions per place. [2024-11-28 02:08:15,988 INFO L140 encePairwiseOnDemand]: 264/277 looper letters, 170 selfloop transitions, 13 changer transitions 0/314 dead transitions. [2024-11-28 02:08:15,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 314 transitions, 1019 flow [2024-11-28 02:08:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:08:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:08:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1005 transitions. [2024-11-28 02:08:15,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6046931407942239 [2024-11-28 02:08:15,992 INFO L175 Difference]: Start difference. First operand has 233 places, 232 transitions, 484 flow. Second operand 6 states and 1005 transitions. [2024-11-28 02:08:15,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 314 transitions, 1019 flow [2024-11-28 02:08:15,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 314 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:08:16,000 INFO L231 Difference]: Finished difference. Result has 234 places, 235 transitions, 536 flow [2024-11-28 02:08:16,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=234, PETRI_TRANSITIONS=235} [2024-11-28 02:08:16,001 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, -5 predicate places. [2024-11-28 02:08:16,001 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 235 transitions, 536 flow [2024-11-28 02:08:16,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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 02:08:16,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:16,002 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 02:08:16,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:08:16,002 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-28 02:08:16,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash 31849060, now seen corresponding path program 1 times [2024-11-28 02:08:16,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:16,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669514334] [2024-11-28 02:08:16,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:16,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:16,179 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 02:08:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669514334] [2024-11-28 02:08:16,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669514334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:16,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:16,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:16,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259797611] [2024-11-28 02:08:16,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:16,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:08:16,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:16,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:08:16,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:08:16,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2024-11-28 02:08:16,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 235 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 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 02:08:16,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:16,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2024-11-28 02:08:16,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand