./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.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_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/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_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/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_a38ae6a8-e945-4936-ae60-aae5a2e8451b/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 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:49:50,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:49:50,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 19:49:50,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:49:50,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:49:50,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:49:50,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:49:50,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:49:50,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:49:50,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:49:50,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:49:50,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:49:50,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:49:50,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:49:50,257 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:49:50,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:49:50,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:49:50,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:49:50,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:49:50,258 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:49:50,259 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:49:50,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:50,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:50,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:50,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:50,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:49:50,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:50,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:50,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:50,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:50,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:49:50,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:49:50,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:49:50,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:49:50,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:49:50,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:49:50,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:49:50,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:49:50,262 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_a38ae6a8-e945-4936-ae60-aae5a2e8451b/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 -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2024-11-27 19:49:50,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:49:50,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:49:50,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:49:50,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:49:50,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:49:50,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/stack_longest-1.i [2024-11-27 19:49:53,513 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/data/900290291/063ac81c17a0451a948158360833fb5e/FLAG67545bef1 [2024-11-27 19:49:56,152 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:49:56,153 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/sv-benchmarks/c/pthread/stack_longest-1.i [2024-11-27 19:49:56,174 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/data/900290291/063ac81c17a0451a948158360833fb5e/FLAG67545bef1 [2024-11-27 19:49:56,196 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/data/900290291/063ac81c17a0451a948158360833fb5e [2024-11-27 19:49:56,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:49:56,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:49:56,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:56,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:49:56,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:49:56,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:56" (1/1) ... [2024-11-27 19:49:56,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f131bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:56, skipping insertion in model container [2024-11-27 19:49:56,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:56" (1/1) ... [2024-11-27 19:49:56,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:49:56,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:56,796 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:49:56,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:57,018 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:49:57,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57 WrapperNode [2024-11-27 19:49:57,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:57,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:57,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:49:57,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:49:57,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,138 INFO L138 Inliner]: procedures = 277, calls = 832, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 954 [2024-11-27 19:49:57,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:57,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:49:57,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:49:57,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:49:57,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,216 INFO L175 MemorySlicer]: Split 809 memory accesses to 3 slices as follows [2, 5, 802]. 99 percent of accesses are in the largest equivalence class. The 807 initializations are split as follows [2, 5, 800]. The 1 writes are split as follows [0, 0, 1]. [2024-11-27 19:49:57,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,275 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:49:57,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:49:57,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:49:57,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:49:57,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (1/1) ... [2024-11-27 19:49:57,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:57,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:57,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:49:57,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:49:57,428 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-27 19:49:57,429 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-27 19:49:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-27 19:49:57,429 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-27 19:49:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 19:49:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 19:49:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 19:49:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 19:49:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:49:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:49:57,433 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 19:49:57,641 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:49:57,643 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:49:59,461 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 19:49:59,461 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:14,993 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:14,993 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 19:50:14,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:14 BoogieIcfgContainer [2024-11-27 19:50:14,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:14,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:14,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:15,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:15,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:49:56" (1/3) ... [2024-11-27 19:50:15,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3152770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:15, skipping insertion in model container [2024-11-27 19:50:15,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:57" (2/3) ... [2024-11-27 19:50:15,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3152770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:15, skipping insertion in model container [2024-11-27 19:50:15,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:14" (3/3) ... [2024-11-27 19:50:15,004 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2024-11-27 19:50:15,026 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:15,028 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longest-1.i that has 3 procedures, 47 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2024-11-27 19:50:15,028 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 19:50:15,137 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 19:50:15,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 55 transitions, 124 flow [2024-11-27 19:50:15,284 INFO L124 PetriNetUnfolderBase]: 9/53 cut-off events. [2024-11-27 19:50:15,287 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 19:50:15,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 9/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2024-11-27 19:50:15,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 55 transitions, 124 flow [2024-11-27 19:50:15,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 52 transitions, 116 flow [2024-11-27 19:50:15,316 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:15,340 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;@76a1cf11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:15,341 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-27 19:50:15,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 19:50:15,400 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-27 19:50:15,400 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 19:50:15,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:15,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:15,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:15,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1817492390, now seen corresponding path program 1 times [2024-11-27 19:50:15,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:15,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95280513] [2024-11-27 19:50:15,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:16,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:16,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95280513] [2024-11-27 19:50:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95280513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:16,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:16,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:50:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088029158] [2024-11-27 19:50:16,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:16,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:16,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:16,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:16,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:16,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-27 19:50:16,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-27 19:50:16,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:16,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-27 19:50:16,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:17,397 INFO L124 PetriNetUnfolderBase]: 454/882 cut-off events. [2024-11-27 19:50:17,398 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-27 19:50:17,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 882 events. 454/882 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4535 event pairs, 242 based on Foata normal form. 94/858 useless extension candidates. Maximal degree in co-relation 1569. Up to 512 conditions per place. [2024-11-27 19:50:17,410 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 43 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-27 19:50:17,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 227 flow [2024-11-27 19:50:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 19:50:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-27 19:50:17,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-11-27 19:50:17,431 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 116 flow. Second operand 4 states and 117 transitions. [2024-11-27 19:50:17,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 227 flow [2024-11-27 19:50:17,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 217 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 19:50:17,448 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 100 flow [2024-11-27 19:50:17,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-27 19:50:17,459 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2024-11-27 19:50:17,459 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 100 flow [2024-11-27 19:50:17,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-27 19:50:17,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:17,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:17,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:50:17,460 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:17,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:17,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1817492389, now seen corresponding path program 1 times [2024-11-27 19:50:17,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:17,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278359146] [2024-11-27 19:50:17,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:17,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:18,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278359146] [2024-11-27 19:50:18,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278359146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:18,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:18,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:18,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720501658] [2024-11-27 19:50:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:18,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:18,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:18,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:18,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:18,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-27 19:50:18,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-11-27 19:50:18,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:18,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-27 19:50:18,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:19,335 INFO L124 PetriNetUnfolderBase]: 750/1387 cut-off events. [2024-11-27 19:50:19,335 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-27 19:50:19,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 1387 events. 750/1387 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7428 event pairs, 125 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 806. Up to 848 conditions per place. [2024-11-27 19:50:19,346 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 87 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-11-27 19:50:19,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 423 flow [2024-11-27 19:50:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 19:50:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-11-27 19:50:19,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-11-27 19:50:19,348 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 100 flow. Second operand 6 states and 194 transitions. [2024-11-27 19:50:19,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 423 flow [2024-11-27 19:50:19,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 108 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 19:50:19,352 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2024-11-27 19:50:19,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-11-27 19:50:19,353 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-11-27 19:50:19,353 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2024-11-27 19:50:19,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-11-27 19:50:19,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:19,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:19,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:50:19,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:19,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash 470235230, now seen corresponding path program 1 times [2024-11-27 19:50:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:19,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459890667] [2024-11-27 19:50:19,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:19,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459890667] [2024-11-27 19:50:19,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459890667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:19,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:19,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516882219] [2024-11-27 19:50:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:19,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:19,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:19,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:19,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:19,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-27 19:50:19,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:19,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:19,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:20,259 INFO L124 PetriNetUnfolderBase]: 663/1273 cut-off events. [2024-11-27 19:50:20,259 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-27 19:50:20,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 1273 events. 663/1273 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6594 event pairs, 176 based on Foata normal form. 34/1194 useless extension candidates. Maximal degree in co-relation 2590. Up to 721 conditions per place. [2024-11-27 19:50:20,269 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 67 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-11-27 19:50:20,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 376 flow [2024-11-27 19:50:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 19:50:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-11-27 19:50:20,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-27 19:50:20,274 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 5 states and 160 transitions. [2024-11-27 19:50:20,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 376 flow [2024-11-27 19:50:20,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 19:50:20,281 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 161 flow [2024-11-27 19:50:20,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-27 19:50:20,283 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2024-11-27 19:50:20,283 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 161 flow [2024-11-27 19:50:20,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-27 19:50:20,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:20,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:20,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:50:20,284 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:20,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1925804064, now seen corresponding path program 1 times [2024-11-27 19:50:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:20,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026213676] [2024-11-27 19:50:20,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:20,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026213676] [2024-11-27 19:50:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026213676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:20,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:20,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:20,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778069599] [2024-11-27 19:50:20,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:20,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:20,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:20,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:20,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:20,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:20,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-27 19:50:20,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:20,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:20,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:20,992 INFO L124 PetriNetUnfolderBase]: 971/1834 cut-off events. [2024-11-27 19:50:20,992 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-11-27 19:50:20,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4025 conditions, 1834 events. 971/1834 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9740 event pairs, 464 based on Foata normal form. 0/1710 useless extension candidates. Maximal degree in co-relation 3354. Up to 1051 conditions per place. [2024-11-27 19:50:21,008 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 73 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2024-11-27 19:50:21,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 429 flow [2024-11-27 19:50:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 19:50:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-27 19:50:21,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6318181818181818 [2024-11-27 19:50:21,010 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 161 flow. Second operand 4 states and 139 transitions. [2024-11-27 19:50:21,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 429 flow [2024-11-27 19:50:21,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 19:50:21,018 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 197 flow [2024-11-27 19:50:21,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-11-27 19:50:21,022 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-11-27 19:50:21,022 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 197 flow [2024-11-27 19:50:21,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-27 19:50:21,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:21,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:21,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:50:21,024 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:21,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:21,024 INFO L85 PathProgramCache]: Analyzing trace with hash 971912220, now seen corresponding path program 1 times [2024-11-27 19:50:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:21,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369859032] [2024-11-27 19:50:21,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:21,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:21,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:21,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369859032] [2024-11-27 19:50:21,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369859032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:21,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:21,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:21,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198220164] [2024-11-27 19:50:21,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:21,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:21,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:21,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:21,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:21,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:21,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-27 19:50:21,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:21,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:21,603 INFO L124 PetriNetUnfolderBase]: 1096/2028 cut-off events. [2024-11-27 19:50:21,603 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-11-27 19:50:21,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 2028 events. 1096/2028 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10939 event pairs, 514 based on Foata normal form. 22/1931 useless extension candidates. Maximal degree in co-relation 4010. Up to 1284 conditions per place. [2024-11-27 19:50:21,616 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 62 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-11-27 19:50:21,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 397 flow [2024-11-27 19:50:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 19:50:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-27 19:50:21,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-11-27 19:50:21,618 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 197 flow. Second operand 3 states and 106 transitions. [2024-11-27 19:50:21,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 397 flow [2024-11-27 19:50:21,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 391 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 19:50:21,628 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 203 flow [2024-11-27 19:50:21,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-27 19:50:21,628 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2024-11-27 19:50:21,629 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 203 flow [2024-11-27 19:50:21,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-27 19:50:21,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:21,629 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:21,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:50:21,629 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:21,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:21,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1404487277, now seen corresponding path program 1 times [2024-11-27 19:50:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:21,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329540400] [2024-11-27 19:50:21,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:21,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:21,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329540400] [2024-11-27 19:50:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329540400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:21,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:21,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:50:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348834447] [2024-11-27 19:50:21,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:21,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:21,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:21,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:21,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:21,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-27 19:50:21,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-27 19:50:21,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:21,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-27 19:50:21,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:22,342 INFO L124 PetriNetUnfolderBase]: 1006/1856 cut-off events. [2024-11-27 19:50:22,343 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-11-27 19:50:22,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4370 conditions, 1856 events. 1006/1856 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9863 event pairs, 361 based on Foata normal form. 14/1750 useless extension candidates. Maximal degree in co-relation 3871. Up to 1410 conditions per place. [2024-11-27 19:50:22,359 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 49 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-27 19:50:22,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 313 flow [2024-11-27 19:50:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 19:50:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-27 19:50:22,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-27 19:50:22,360 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 203 flow. Second operand 3 states and 96 transitions. [2024-11-27 19:50:22,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 313 flow [2024-11-27 19:50:22,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 303 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-27 19:50:22,366 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 180 flow [2024-11-27 19:50:22,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-11-27 19:50:22,367 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-11-27 19:50:22,367 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 180 flow [2024-11-27 19:50:22,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-27 19:50:22,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:22,368 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:22,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:50:22,368 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:22,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1348396269, now seen corresponding path program 1 times [2024-11-27 19:50:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:22,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930817738] [2024-11-27 19:50:22,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:23,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:23,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930817738] [2024-11-27 19:50:23,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930817738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601279145] [2024-11-27 19:50:23,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:23,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:23,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:23,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:23,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:50:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:23,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:50:23,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:24,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:24,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601279145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:24,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:24,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-11-27 19:50:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919560463] [2024-11-27 19:50:24,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:24,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 19:50:24,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:24,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 19:50:24,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:50:24,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-27 19:50:24,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 180 flow. Second operand has 15 states, 15 states have (on average 19.0) internal successors, (285), 15 states have internal predecessors, (285), 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) [2024-11-27 19:50:24,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:24,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-27 19:50:24,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:27,095 INFO L124 PetriNetUnfolderBase]: 4128/7722 cut-off events. [2024-11-27 19:50:27,096 INFO L125 PetriNetUnfolderBase]: For 2485/2485 co-relation queries the response was YES. [2024-11-27 19:50:27,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17864 conditions, 7722 events. 4128/7722 cut-off events. For 2485/2485 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 50455 event pairs, 309 based on Foata normal form. 192/7404 useless extension candidates. Maximal degree in co-relation 7413. Up to 1423 conditions per place. [2024-11-27 19:50:27,176 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 327 selfloop transitions, 45 changer transitions 0/386 dead transitions. [2024-11-27 19:50:27,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 386 transitions, 1892 flow [2024-11-27 19:50:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 19:50:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-27 19:50:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 685 transitions. [2024-11-27 19:50:27,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6227272727272727 [2024-11-27 19:50:27,183 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 180 flow. Second operand 20 states and 685 transitions. [2024-11-27 19:50:27,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 386 transitions, 1892 flow [2024-11-27 19:50:27,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 386 transitions, 1850 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-11-27 19:50:27,208 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 592 flow [2024-11-27 19:50:27,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=592, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-11-27 19:50:27,209 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2024-11-27 19:50:27,211 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 592 flow [2024-11-27 19:50:27,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.0) internal successors, (285), 15 states have internal predecessors, (285), 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) [2024-11-27 19:50:27,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:27,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:27,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:50:27,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:27,415 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:27,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1268479052, now seen corresponding path program 1 times [2024-11-27 19:50:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686388032] [2024-11-27 19:50:27,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:27,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:27,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:27,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686388032] [2024-11-27 19:50:27,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686388032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:27,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:27,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:27,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135067320] [2024-11-27 19:50:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:27,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:27,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:27,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:27,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:27,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:27,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:27,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:27,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:27,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:28,391 INFO L124 PetriNetUnfolderBase]: 1833/3828 cut-off events. [2024-11-27 19:50:28,392 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2024-11-27 19:50:28,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9379 conditions, 3828 events. 1833/3828 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 22308 event pairs, 372 based on Foata normal form. 234/3906 useless extension candidates. Maximal degree in co-relation 9177. Up to 2311 conditions per place. [2024-11-27 19:50:28,431 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 70 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-27 19:50:28,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 609 flow [2024-11-27 19:50:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 19:50:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-27 19:50:28,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-11-27 19:50:28,432 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 592 flow. Second operand 3 states and 94 transitions. [2024-11-27 19:50:28,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 609 flow [2024-11-27 19:50:28,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 561 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-11-27 19:50:28,452 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 389 flow [2024-11-27 19:50:28,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-11-27 19:50:28,453 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2024-11-27 19:50:28,455 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 389 flow [2024-11-27 19:50:28,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:28,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:28,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:28,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:50:28,456 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:28,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash -667115094, now seen corresponding path program 1 times [2024-11-27 19:50:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:28,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549591570] [2024-11-27 19:50:28,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:28,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:28,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:28,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549591570] [2024-11-27 19:50:28,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549591570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:28,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:28,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:50:28,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93329194] [2024-11-27 19:50:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:28,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:28,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:28,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:28,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:28,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-27 19:50:28,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-27 19:50:28,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:28,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-27 19:50:28,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:29,326 INFO L124 PetriNetUnfolderBase]: 1838/3730 cut-off events. [2024-11-27 19:50:29,326 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-11-27 19:50:29,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9363 conditions, 3730 events. 1838/3730 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 21382 event pairs, 1214 based on Foata normal form. 0/3605 useless extension candidates. Maximal degree in co-relation 7894. Up to 2670 conditions per place. [2024-11-27 19:50:29,356 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 65 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-11-27 19:50:29,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 540 flow [2024-11-27 19:50:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 19:50:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-27 19:50:29,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-27 19:50:29,358 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 389 flow. Second operand 4 states and 100 transitions. [2024-11-27 19:50:29,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 540 flow [2024-11-27 19:50:29,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 19:50:29,368 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 389 flow [2024-11-27 19:50:29,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-11-27 19:50:29,370 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2024-11-27 19:50:29,370 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 389 flow [2024-11-27 19:50:29,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-27 19:50:29,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:29,371 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:29,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:50:29,371 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:29,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1896847289, now seen corresponding path program 1 times [2024-11-27 19:50:29,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139804166] [2024-11-27 19:50:29,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:30,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:30,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139804166] [2024-11-27 19:50:30,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139804166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:30,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:30,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:30,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037456698] [2024-11-27 19:50:30,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:30,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:50:30,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:30,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:50:30,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:30,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-27 19:50:30,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 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) [2024-11-27 19:50:30,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:30,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-27 19:50:30,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:31,286 INFO L124 PetriNetUnfolderBase]: 1961/3997 cut-off events. [2024-11-27 19:50:31,287 INFO L125 PetriNetUnfolderBase]: For 1679/1679 co-relation queries the response was YES. [2024-11-27 19:50:31,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9865 conditions, 3997 events. 1961/3997 cut-off events. For 1679/1679 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 23113 event pairs, 461 based on Foata normal form. 0/3837 useless extension candidates. Maximal degree in co-relation 8395. Up to 2936 conditions per place. [2024-11-27 19:50:31,324 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 105 selfloop transitions, 8 changer transitions 0/126 dead transitions. [2024-11-27 19:50:31,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 772 flow [2024-11-27 19:50:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:50:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 19:50:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-11-27 19:50:31,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5116883116883116 [2024-11-27 19:50:31,327 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 389 flow. Second operand 7 states and 197 transitions. [2024-11-27 19:50:31,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 772 flow [2024-11-27 19:50:31,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 126 transitions, 762 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 19:50:31,340 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 440 flow [2024-11-27 19:50:31,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2024-11-27 19:50:31,343 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-11-27 19:50:31,343 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 440 flow [2024-11-27 19:50:31,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 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) [2024-11-27 19:50:31,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:31,343 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:31,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:50:31,343 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:31,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash 679936728, now seen corresponding path program 1 times [2024-11-27 19:50:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:31,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546200845] [2024-11-27 19:50:31,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:31,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:31,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546200845] [2024-11-27 19:50:31,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546200845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:31,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:31,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:31,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490647866] [2024-11-27 19:50:31,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:31,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:31,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:31,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:31,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:31,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:31,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-27 19:50:31,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:31,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:31,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:32,364 INFO L124 PetriNetUnfolderBase]: 2879/6069 cut-off events. [2024-11-27 19:50:32,364 INFO L125 PetriNetUnfolderBase]: For 3094/3094 co-relation queries the response was YES. [2024-11-27 19:50:32,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15013 conditions, 6069 events. 2879/6069 cut-off events. For 3094/3094 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40410 event pairs, 1373 based on Foata normal form. 137/5984 useless extension candidates. Maximal degree in co-relation 12986. Up to 3403 conditions per place. [2024-11-27 19:50:32,423 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 124 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-11-27 19:50:32,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 1050 flow [2024-11-27 19:50:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 19:50:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-27 19:50:32,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-11-27 19:50:32,425 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 440 flow. Second operand 3 states and 107 transitions. [2024-11-27 19:50:32,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 1050 flow [2024-11-27 19:50:32,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 140 transitions, 1038 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 19:50:32,445 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 445 flow [2024-11-27 19:50:32,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-27 19:50:32,446 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-11-27 19:50:32,446 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 445 flow [2024-11-27 19:50:32,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-27 19:50:32,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:32,447 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:32,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 19:50:32,447 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:32,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 91201739, now seen corresponding path program 1 times [2024-11-27 19:50:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:32,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770148210] [2024-11-27 19:50:32,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:32,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770148210] [2024-11-27 19:50:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770148210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:32,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153566579] [2024-11-27 19:50:32,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:32,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:32,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:32,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:32,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:32,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:32,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 445 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-11-27 19:50:32,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:32,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:32,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:33,567 INFO L124 PetriNetUnfolderBase]: 3194/6487 cut-off events. [2024-11-27 19:50:33,568 INFO L125 PetriNetUnfolderBase]: For 4314/4314 co-relation queries the response was YES. [2024-11-27 19:50:33,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17920 conditions, 6487 events. 3194/6487 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 42361 event pairs, 475 based on Foata normal form. 105/6410 useless extension candidates. Maximal degree in co-relation 14840. Up to 2632 conditions per place. [2024-11-27 19:50:33,643 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 109 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2024-11-27 19:50:33,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 930 flow [2024-11-27 19:50:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 19:50:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-11-27 19:50:33,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527272727272727 [2024-11-27 19:50:33,645 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 445 flow. Second operand 5 states and 152 transitions. [2024-11-27 19:50:33,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 930 flow [2024-11-27 19:50:33,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 923 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 19:50:33,673 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 519 flow [2024-11-27 19:50:33,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-11-27 19:50:33,676 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-11-27 19:50:33,676 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 519 flow [2024-11-27 19:50:33,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-11-27 19:50:33,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:33,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:33,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:50:33,678 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:33,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1351588512, now seen corresponding path program 1 times [2024-11-27 19:50:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725109021] [2024-11-27 19:50:33,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:35,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725109021] [2024-11-27 19:50:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725109021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:35,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:35,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 19:50:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499061688] [2024-11-27 19:50:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:35,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 19:50:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:35,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 19:50:35,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:50:35,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:35,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 519 flow. Second operand has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 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) [2024-11-27 19:50:35,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:35,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:35,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:37,869 INFO L124 PetriNetUnfolderBase]: 4726/9654 cut-off events. [2024-11-27 19:50:37,870 INFO L125 PetriNetUnfolderBase]: For 8698/8698 co-relation queries the response was YES. [2024-11-27 19:50:37,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26991 conditions, 9654 events. 4726/9654 cut-off events. For 8698/8698 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 67149 event pairs, 1022 based on Foata normal form. 24/9464 useless extension candidates. Maximal degree in co-relation 21486. Up to 4678 conditions per place. [2024-11-27 19:50:37,951 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 181 selfloop transitions, 24 changer transitions 0/219 dead transitions. [2024-11-27 19:50:37,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 219 transitions, 1565 flow [2024-11-27 19:50:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 19:50:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 19:50:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 316 transitions. [2024-11-27 19:50:37,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5223140495867769 [2024-11-27 19:50:37,954 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 519 flow. Second operand 11 states and 316 transitions. [2024-11-27 19:50:37,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 219 transitions, 1565 flow [2024-11-27 19:50:37,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 219 transitions, 1563 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 19:50:38,001 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 733 flow [2024-11-27 19:50:38,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=733, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2024-11-27 19:50:38,002 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2024-11-27 19:50:38,002 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 733 flow [2024-11-27 19:50:38,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 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) [2024-11-27 19:50:38,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:38,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:38,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:50:38,003 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:38,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1659923490, now seen corresponding path program 1 times [2024-11-27 19:50:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817795559] [2024-11-27 19:50:38,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:38,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:38,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817795559] [2024-11-27 19:50:38,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817795559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:38,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:38,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:38,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694207653] [2024-11-27 19:50:38,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:38,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:38,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:38,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:38,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:38,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:38,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 733 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-27 19:50:38,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:38,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:38,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:40,209 INFO L124 PetriNetUnfolderBase]: 6719/14120 cut-off events. [2024-11-27 19:50:40,209 INFO L125 PetriNetUnfolderBase]: For 17900/17900 co-relation queries the response was YES. [2024-11-27 19:50:40,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40957 conditions, 14120 events. 6719/14120 cut-off events. For 17900/17900 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 111032 event pairs, 2587 based on Foata normal form. 409/14206 useless extension candidates. Maximal degree in co-relation 33123. Up to 6552 conditions per place. [2024-11-27 19:50:40,365 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 222 selfloop transitions, 3 changer transitions 0/239 dead transitions. [2024-11-27 19:50:40,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 239 transitions, 2206 flow [2024-11-27 19:50:40,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 19:50:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-27 19:50:40,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6681818181818182 [2024-11-27 19:50:40,367 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 733 flow. Second operand 4 states and 147 transitions. [2024-11-27 19:50:40,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 239 transitions, 2206 flow [2024-11-27 19:50:40,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 239 transitions, 2166 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-11-27 19:50:40,462 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 731 flow [2024-11-27 19:50:40,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=731, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2024-11-27 19:50:40,463 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 62 predicate places. [2024-11-27 19:50:40,464 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 731 flow [2024-11-27 19:50:40,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-27 19:50:40,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:40,464 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:40,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:50:40,465 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:40,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash -486212305, now seen corresponding path program 1 times [2024-11-27 19:50:40,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:40,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046133949] [2024-11-27 19:50:40,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:40,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:41,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046133949] [2024-11-27 19:50:41,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046133949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:41,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882576291] [2024-11-27 19:50:41,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:41,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:41,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:41,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:41,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:50:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:41,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 19:50:41,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:42,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:42,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882576291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:42,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:42,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-27 19:50:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428418172] [2024-11-27 19:50:42,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:42,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 19:50:42,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:42,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 19:50:42,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:50:42,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-27 19:50:42,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 731 flow. Second operand has 18 states, 18 states have (on average 20.166666666666668) internal successors, (363), 18 states have internal predecessors, (363), 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) [2024-11-27 19:50:42,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:42,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-27 19:50:42,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 19:50:47,657 INFO L124 PetriNetUnfolderBase]: 14081/28817 cut-off events. [2024-11-27 19:50:47,658 INFO L125 PetriNetUnfolderBase]: For 45199/45199 co-relation queries the response was YES. [2024-11-27 19:50:47,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89419 conditions, 28817 events. 14081/28817 cut-off events. For 45199/45199 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 241028 event pairs, 2136 based on Foata normal form. 268/28346 useless extension candidates. Maximal degree in co-relation 52748. Up to 4582 conditions per place. [2024-11-27 19:50:47,903 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 378 selfloop transitions, 91 changer transitions 0/482 dead transitions. [2024-11-27 19:50:47,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 482 transitions, 3834 flow [2024-11-27 19:50:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 19:50:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-27 19:50:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 648 transitions. [2024-11-27 19:50:47,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.561038961038961 [2024-11-27 19:50:47,907 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 731 flow. Second operand 21 states and 648 transitions. [2024-11-27 19:50:47,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 482 transitions, 3834 flow [2024-11-27 19:50:48,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 482 transitions, 3773 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-27 19:50:48,078 INFO L231 Difference]: Finished difference. Result has 146 places, 171 transitions, 1674 flow [2024-11-27 19:50:48,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1674, PETRI_PLACES=146, PETRI_TRANSITIONS=171} [2024-11-27 19:50:48,079 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 96 predicate places. [2024-11-27 19:50:48,079 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 171 transitions, 1674 flow [2024-11-27 19:50:48,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.166666666666668) internal successors, (363), 18 states have internal predecessors, (363), 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) [2024-11-27 19:50:48,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 19:50:48,080 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:48,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:48,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 19:50:48,283 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-27 19:50:48,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash 820254346, now seen corresponding path program 1 times [2024-11-27 19:50:48,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:48,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194928046] [2024-11-27 19:50:48,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:48,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:48,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194928046] [2024-11-27 19:50:48,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194928046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:48,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59987542] [2024-11-27 19:50:48,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:48,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:48,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:48,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:48,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ae6a8-e945-4936-ae60-aae5a2e8451b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:50:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:49,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:50:49,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:49,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:49,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59987542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:49,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-27 19:50:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476494100] [2024-11-27 19:50:49,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:49,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:49,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:49,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:49,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-27 19:50:49,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 171 transitions, 1674 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2024-11-27 19:50:49,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 19:50:49,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-27 19:50:49,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand