./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/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_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/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_d600d2aa-835a-4cb6-95aa-08a32be8363e/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 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:24,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:24,490 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:07:24,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:24,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:24,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:24,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:24,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:24,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:24,537 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:24,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:24,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:24,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:24,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:24,540 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:24,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:24,541 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:24,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:24,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:24,542 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:24,542 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:07:24,542 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:07:24,542 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:07:24,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:24,542 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:07:24,542 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:07:24,542 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:24,543 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:24,543 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:24,543 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:24,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:24,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:24,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:24,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:24,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:24,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:24,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:24,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:24,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:24,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:24,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:24,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:24,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:24,545 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:24,545 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:24,546 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:24,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:24,546 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_d600d2aa-835a-4cb6-95aa-08a32be8363e/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 -> 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd [2024-11-28 02:07:24,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:24,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:24,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:24,891 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:24,892 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:24,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2024-11-28 02:07:28,000 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/data/87ed8375f/5cb5558d3c754732b1e2b0f12f0722bf/FLAG119b3045b [2024-11-28 02:07:28,359 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:28,360 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2024-11-28 02:07:28,377 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/data/87ed8375f/5cb5558d3c754732b1e2b0f12f0722bf/FLAG119b3045b [2024-11-28 02:07:28,397 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/data/87ed8375f/5cb5558d3c754732b1e2b0f12f0722bf [2024-11-28 02:07:28,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:28,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:28,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:28,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:28,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:28,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad82dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28, skipping insertion in model container [2024-11-28 02:07:28,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,458 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:29,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:29,023 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:29,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:29,118 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:29,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29 WrapperNode [2024-11-28 02:07:29,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:29,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:29,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:29,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:29,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,156 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-28 02:07:29,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:29,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:29,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:29,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:29,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,167 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,179 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-11-28 02:07:29,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,186 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:29,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:29,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:29,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:29,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (1/1) ... [2024-11-28 02:07:29,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:29,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:29,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:29,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600d2aa-835a-4cb6-95aa-08a32be8363e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:07:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:07:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:07:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 02:07:29,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 02:07:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:07:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:07:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:07:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:07:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:29,270 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:07:29,438 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:29,440 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:29,636 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:07:29,636 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:29,853 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:29,855 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 02:07:29,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:29 BoogieIcfgContainer [2024-11-28 02:07:29,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:29,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:29,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:29,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:29,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:28" (1/3) ... [2024-11-28 02:07:29,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69827272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:29, skipping insertion in model container [2024-11-28 02:07:29,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:29" (2/3) ... [2024-11-28 02:07:29,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69827272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:29, skipping insertion in model container [2024-11-28 02:07:29,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:29" (3/3) ... [2024-11-28 02:07:29,868 INFO L128 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-zero.i [2024-11-28 02:07:29,887 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:29,889 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09_fmaxsym-zero.i that has 2 procedures, 23 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2024-11-28 02:07:29,889 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:07:29,979 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:30,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 26 transitions, 56 flow [2024-11-28 02:07:30,057 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-11-28 02:07:30,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:30,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 3/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 48 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-28 02:07:30,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 26 transitions, 56 flow [2024-11-28 02:07:30,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 26 transitions, 56 flow [2024-11-28 02:07:30,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:30,104 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;@37a1d54c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:30,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-28 02:07:30,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:30,114 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 02:07:30,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:30,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:30,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:07:30,116 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-28 02:07:30,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:30,123 INFO L85 PathProgramCache]: Analyzing trace with hash 245145, now seen corresponding path program 1 times [2024-11-28 02:07:30,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183588775] [2024-11-28 02:07:30,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:30,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183588775] [2024-11-28 02:07:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183588775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:30,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:30,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:30,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103625259] [2024-11-28 02:07:30,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:30,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:07:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:30,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:07:30,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:07:30,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-11-28 02:07:30,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:30,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:30,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-11-28 02:07:30,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:30,497 INFO L124 PetriNetUnfolderBase]: 17/61 cut-off events. [2024-11-28 02:07:30,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:30,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 61 events. 17/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 140 event pairs, 14 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 95. Up to 44 conditions per place. [2024-11-28 02:07:30,501 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 12 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2024-11-28 02:07:30,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 68 flow [2024-11-28 02:07:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:07:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:07:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2024-11-28 02:07:30,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-11-28 02:07:30,516 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 56 flow. Second operand 2 states and 33 transitions. [2024-11-28 02:07:30,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 68 flow [2024-11-28 02:07:30,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:30,522 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 44 flow [2024-11-28 02:07:30,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-28 02:07:30,531 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-11-28 02:07:30,531 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 44 flow [2024-11-28 02:07:30,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:30,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:30,532 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 02:07:30,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:07:30,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-28 02:07:30,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1286659323, now seen corresponding path program 1 times [2024-11-28 02:07:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72746399] [2024-11-28 02:07:30,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:30,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:30,593 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:30,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:30,652 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:30,654 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-28 02:07:30,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-28 02:07:30,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-11-28 02:07:30,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-28 02:07:30,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-28 02:07:30,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-28 02:07:30,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-28 02:07:30,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-28 02:07:30,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:07:30,661 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:07:30,664 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:30,667 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:07:30,699 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:30,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 45 transitions, 100 flow [2024-11-28 02:07:30,715 INFO L124 PetriNetUnfolderBase]: 6/54 cut-off events. [2024-11-28 02:07:30,717 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:07:30,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 6/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2024-11-28 02:07:30,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 45 transitions, 100 flow [2024-11-28 02:07:30,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 45 transitions, 100 flow [2024-11-28 02:07:30,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:30,725 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;@37a1d54c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:30,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-28 02:07:30,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:30,730 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 02:07:30,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:30,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:30,730 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:07:30,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-28 02:07:30,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash 289830, now seen corresponding path program 1 times [2024-11-28 02:07:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:30,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376687121] [2024-11-28 02:07:30,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:30,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:30,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376687121] [2024-11-28 02:07:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376687121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:30,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:30,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683875635] [2024-11-28 02:07:30,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:30,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:07:30,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:30,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:07:30,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:07:30,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-11-28 02:07:30,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:30,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:30,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-11-28 02:07:30,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:31,067 INFO L124 PetriNetUnfolderBase]: 345/768 cut-off events. [2024-11-28 02:07:31,067 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-28 02:07:31,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1361 conditions, 768 events. 345/768 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4064 event pairs, 294 based on Foata normal form. 99/840 useless extension candidates. Maximal degree in co-relation 757. Up to 564 conditions per place. [2024-11-28 02:07:31,081 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 21 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-11-28 02:07:31,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 124 flow [2024-11-28 02:07:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:07:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:07:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2024-11-28 02:07:31,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-28 02:07:31,083 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 100 flow. Second operand 2 states and 58 transitions. [2024-11-28 02:07:31,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 124 flow [2024-11-28 02:07:31,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:31,085 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 82 flow [2024-11-28 02:07:31,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-11-28 02:07:31,089 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-11-28 02:07:31,089 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 82 flow [2024-11-28 02:07:31,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:31,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:31,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:31,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:07:31,090 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-28 02:07:31,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash 45152619, now seen corresponding path program 1 times [2024-11-28 02:07:31,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:31,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828096747] [2024-11-28 02:07:31,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:31,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:31,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:31,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828096747] [2024-11-28 02:07:31,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828096747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:31,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:31,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:31,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425928016] [2024-11-28 02:07:31,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:31,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:31,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:31,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:31,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:31,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-11-28 02:07:31,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:31,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:31,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-11-28 02:07:31,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:31,468 INFO L124 PetriNetUnfolderBase]: 345/753 cut-off events. [2024-11-28 02:07:31,470 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-28 02:07:31,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 753 events. 345/753 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3894 event pairs, 294 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 1342. Up to 563 conditions per place. [2024-11-28 02:07:31,477 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 20 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2024-11-28 02:07:31,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 120 flow [2024-11-28 02:07:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-28 02:07:31,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-11-28 02:07:31,480 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 82 flow. Second operand 3 states and 65 transitions. [2024-11-28 02:07:31,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 120 flow [2024-11-28 02:07:31,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:31,482 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 80 flow [2024-11-28 02:07:31,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-28 02:07:31,485 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-11-28 02:07:31,487 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 80 flow [2024-11-28 02:07:31,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:31,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:31,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:31,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:07:31,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-28 02:07:31,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:31,490 INFO L85 PathProgramCache]: Analyzing trace with hash 45152620, now seen corresponding path program 1 times [2024-11-28 02:07:31,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:31,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455155918] [2024-11-28 02:07:31,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455155918] [2024-11-28 02:07:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455155918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683905589] [2024-11-28 02:07:31,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:31,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:31,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:31,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:31,911 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-11-28 02:07:31,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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) [2024-11-28 02:07:31,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:31,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-11-28 02:07:31,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:32,290 INFO L124 PetriNetUnfolderBase]: 646/1368 cut-off events. [2024-11-28 02:07:32,291 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-28 02:07:32,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 1368 events. 646/1368 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7713 event pairs, 188 based on Foata normal form. 27/1362 useless extension candidates. Maximal degree in co-relation 2469. Up to 420 conditions per place. [2024-11-28 02:07:32,300 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 45 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-11-28 02:07:32,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 246 flow [2024-11-28 02:07:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:07:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-28 02:07:32,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2024-11-28 02:07:32,304 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 80 flow. Second operand 5 states and 127 transitions. [2024-11-28 02:07:32,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 246 flow [2024-11-28 02:07:32,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:32,307 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 106 flow [2024-11-28 02:07:32,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-11-28 02:07:32,310 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-28 02:07:32,310 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 106 flow [2024-11-28 02:07:32,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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) [2024-11-28 02:07:32,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:32,311 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 02:07:32,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:07:32,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-28 02:07:32,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash 216468116, now seen corresponding path program 1 times [2024-11-28 02:07:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:32,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024759513] [2024-11-28 02:07:32,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:32,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:32,331 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:32,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:32,348 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (7 of 11 remaining) [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2024-11-28 02:07:32,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2024-11-28 02:07:32,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2024-11-28 02:07:32,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2024-11-28 02:07:32,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:07:32,350 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 02:07:32,353 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:32,353 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:07:32,395 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:32,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 64 transitions, 146 flow [2024-11-28 02:07:32,408 INFO L124 PetriNetUnfolderBase]: 9/78 cut-off events. [2024-11-28 02:07:32,408 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 02:07:32,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 9/78 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 230 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2024-11-28 02:07:32,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 64 transitions, 146 flow [2024-11-28 02:07:32,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 64 transitions, 146 flow [2024-11-28 02:07:32,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:32,414 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;@37a1d54c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:32,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-28 02:07:32,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:32,420 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 02:07:32,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:32,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:32,420 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:07:32,420 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 02:07:32,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:32,420 INFO L85 PathProgramCache]: Analyzing trace with hash 353382, now seen corresponding path program 1 times [2024-11-28 02:07:32,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:32,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719144642] [2024-11-28 02:07:32,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:32,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719144642] [2024-11-28 02:07:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719144642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:32,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:32,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706736631] [2024-11-28 02:07:32,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:32,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:07:32,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:32,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:07:32,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:07:32,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-28 02:07:32,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:32,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:32,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-28 02:07:32,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:33,462 INFO L124 PetriNetUnfolderBase]: 4505/7972 cut-off events. [2024-11-28 02:07:33,463 INFO L125 PetriNetUnfolderBase]: For 466/466 co-relation queries the response was YES. [2024-11-28 02:07:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14518 conditions, 7972 events. 4505/7972 cut-off events. For 466/466 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 55934 event pairs, 3878 based on Foata normal form. 1212/8917 useless extension candidates. Maximal degree in co-relation 3003. Up to 6260 conditions per place. [2024-11-28 02:07:33,519 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 30 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-11-28 02:07:33,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 182 flow [2024-11-28 02:07:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:07:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:07:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2024-11-28 02:07:33,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-11-28 02:07:33,522 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 146 flow. Second operand 2 states and 83 transitions. [2024-11-28 02:07:33,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 182 flow [2024-11-28 02:07:33,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:33,526 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 120 flow [2024-11-28 02:07:33,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-28 02:07:33,527 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-11-28 02:07:33,528 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 120 flow [2024-11-28 02:07:33,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:33,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:33,530 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:33,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:07:33,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 02:07:33,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1939030041, now seen corresponding path program 1 times [2024-11-28 02:07:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630262484] [2024-11-28 02:07:33,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:33,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630262484] [2024-11-28 02:07:33,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630262484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:33,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:33,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:33,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115412309] [2024-11-28 02:07:33,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:33,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:33,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:33,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:33,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:33,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 64 [2024-11-28 02:07:33,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:33,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:33,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 64 [2024-11-28 02:07:33,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:34,693 INFO L124 PetriNetUnfolderBase]: 4505/7861 cut-off events. [2024-11-28 02:07:34,693 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-11-28 02:07:34,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14344 conditions, 7861 events. 4505/7861 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 54084 event pairs, 3878 based on Foata normal form. 0/7705 useless extension candidates. Maximal degree in co-relation 14338. Up to 6259 conditions per place. [2024-11-28 02:07:34,751 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 29 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2024-11-28 02:07:34,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 174 flow [2024-11-28 02:07:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-28 02:07:34,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-11-28 02:07:34,754 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 120 flow. Second operand 3 states and 93 transitions. [2024-11-28 02:07:34,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 174 flow [2024-11-28 02:07:34,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:34,759 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 116 flow [2024-11-28 02:07:34,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-28 02:07:34,761 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2024-11-28 02:07:34,761 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 116 flow [2024-11-28 02:07:34,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:34,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:34,762 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:34,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:07:34,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 02:07:34,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1939030042, now seen corresponding path program 1 times [2024-11-28 02:07:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677953355] [2024-11-28 02:07:34,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:34,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:34,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:34,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677953355] [2024-11-28 02:07:34,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677953355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:34,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:34,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659420957] [2024-11-28 02:07:34,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:34,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:34,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:34,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:34,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:35,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-11-28 02:07:35,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:35,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:35,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-11-28 02:07:35,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:36,730 INFO L124 PetriNetUnfolderBase]: 8446/14373 cut-off events. [2024-11-28 02:07:36,730 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-28 02:07:36,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26521 conditions, 14373 events. 8446/14373 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 104138 event pairs, 1830 based on Foata normal form. 219/14316 useless extension candidates. Maximal degree in co-relation 26514. Up to 4692 conditions per place. [2024-11-28 02:07:36,832 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 72 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2024-11-28 02:07:36,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 382 flow [2024-11-28 02:07:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:07:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2024-11-28 02:07:36,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.590625 [2024-11-28 02:07:36,834 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 116 flow. Second operand 5 states and 189 transitions. [2024-11-28 02:07:36,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 382 flow [2024-11-28 02:07:36,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:36,837 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 142 flow [2024-11-28 02:07:36,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-11-28 02:07:36,839 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-11-28 02:07:36,839 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 142 flow [2024-11-28 02:07:36,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:36,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:36,839 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:36,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:07:36,840 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 02:07:36,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2028984493, now seen corresponding path program 1 times [2024-11-28 02:07:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:36,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149447650] [2024-11-28 02:07:36,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:37,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:37,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149447650] [2024-11-28 02:07:37,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149447650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:37,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:37,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:37,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011669731] [2024-11-28 02:07:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:37,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:37,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:37,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:37,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:37,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-11-28 02:07:37,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:37,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:37,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-11-28 02:07:37,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:39,773 INFO L124 PetriNetUnfolderBase]: 14743/24834 cut-off events. [2024-11-28 02:07:39,773 INFO L125 PetriNetUnfolderBase]: For 5582/5948 co-relation queries the response was YES. [2024-11-28 02:07:39,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49669 conditions, 24834 events. 14743/24834 cut-off events. For 5582/5948 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 191473 event pairs, 3306 based on Foata normal form. 378/24711 useless extension candidates. Maximal degree in co-relation 49660. Up to 8148 conditions per place. [2024-11-28 02:07:40,061 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 76 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2024-11-28 02:07:40,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 446 flow [2024-11-28 02:07:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:07:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-28 02:07:40,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584375 [2024-11-28 02:07:40,063 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 142 flow. Second operand 5 states and 187 transitions. [2024-11-28 02:07:40,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 446 flow [2024-11-28 02:07:40,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:40,073 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 168 flow [2024-11-28 02:07:40,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-11-28 02:07:40,074 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2024-11-28 02:07:40,074 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 168 flow [2024-11-28 02:07:40,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:40,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,074 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 02:07:40,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:07:40,074 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-28 02:07:40,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1269948964, now seen corresponding path program 1 times [2024-11-28 02:07:40,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:40,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625038050] [2024-11-28 02:07:40,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:40,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:40,090 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:40,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:40,104 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:40,104 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (10 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-28 02:07:40,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-28 02:07:40,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (3 of 14 remaining) [2024-11-28 02:07:40,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-28 02:07:40,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-28 02:07:40,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2024-11-28 02:07:40,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:07:40,106 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 02:07:40,107 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:40,107 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 02:07:40,161 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:07:40,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 83 transitions, 194 flow [2024-11-28 02:07:40,173 INFO L124 PetriNetUnfolderBase]: 12/102 cut-off events. [2024-11-28 02:07:40,173 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 02:07:40,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 102 events. 12/102 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 323 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 90. Up to 5 conditions per place. [2024-11-28 02:07:40,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 83 transitions, 194 flow [2024-11-28 02:07:40,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 83 transitions, 194 flow [2024-11-28 02:07:40,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:40,177 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;@37a1d54c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:40,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 02:07:40,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:40,181 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 02:07:40,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:40,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,181 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:07:40,181 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-28 02:07:40,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,182 INFO L85 PathProgramCache]: Analyzing trace with hash 435801, now seen corresponding path program 1 times [2024-11-28 02:07:40,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:40,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702075732] [2024-11-28 02:07:40,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:40,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:40,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702075732] [2024-11-28 02:07:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702075732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:40,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:40,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672261065] [2024-11-28 02:07:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:40,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:07:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:40,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:07:40,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:07:40,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-28 02:07:40,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 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) [2024-11-28 02:07:40,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:40,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-28 02:07:40,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:45,789 INFO L124 PetriNetUnfolderBase]: 50073/77900 cut-off events. [2024-11-28 02:07:45,790 INFO L125 PetriNetUnfolderBase]: For 6570/6570 co-relation queries the response was YES. [2024-11-28 02:07:45,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144863 conditions, 77900 events. 50073/77900 cut-off events. For 6570/6570 co-relation queries the response was YES. Maximal size of possible extension queue 2504. Compared 629460 event pairs, 43302 based on Foata normal form. 13184/88884 useless extension candidates. Maximal degree in co-relation 14586. Up to 64116 conditions per place. [2024-11-28 02:07:46,198 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 39 selfloop transitions, 0 changer transitions 0/68 dead transitions. [2024-11-28 02:07:46,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 242 flow [2024-11-28 02:07:46,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:07:46,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:07:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions. [2024-11-28 02:07:46,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2024-11-28 02:07:46,199 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 194 flow. Second operand 2 states and 108 transitions. [2024-11-28 02:07:46,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 242 flow [2024-11-28 02:07:46,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 236 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:46,206 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 158 flow [2024-11-28 02:07:46,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-11-28 02:07:46,207 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -6 predicate places. [2024-11-28 02:07:46,209 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 158 flow [2024-11-28 02:07:46,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 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) [2024-11-28 02:07:46,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:46,210 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:46,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:07:46,210 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-28 02:07:46,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash 100043705, now seen corresponding path program 1 times [2024-11-28 02:07:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:46,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449582549] [2024-11-28 02:07:46,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:46,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:46,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:46,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449582549] [2024-11-28 02:07:46,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449582549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:46,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:46,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:46,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597045436] [2024-11-28 02:07:46,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:46,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:46,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:46,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:46,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:46,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2024-11-28 02:07:46,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:46,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:46,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2024-11-28 02:07:46,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:51,777 INFO L124 PetriNetUnfolderBase]: 50073/77021 cut-off events. [2024-11-28 02:07:51,777 INFO L125 PetriNetUnfolderBase]: For 2846/2846 co-relation queries the response was YES. [2024-11-28 02:07:51,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142897 conditions, 77021 events. 50073/77021 cut-off events. For 2846/2846 co-relation queries the response was YES. Maximal size of possible extension queue 2448. Compared 609596 event pairs, 43302 based on Foata normal form. 0/75700 useless extension candidates. Maximal degree in co-relation 142890. Up to 64115 conditions per place. [2024-11-28 02:07:52,092 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 38 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2024-11-28 02:07:52,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 228 flow [2024-11-28 02:07:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:52,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-28 02:07:52,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4859437751004016 [2024-11-28 02:07:52,094 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 158 flow. Second operand 3 states and 121 transitions. [2024-11-28 02:07:52,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 228 flow [2024-11-28 02:07:52,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:52,101 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 152 flow [2024-11-28 02:07:52,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-11-28 02:07:52,103 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -8 predicate places. [2024-11-28 02:07:52,104 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 152 flow [2024-11-28 02:07:52,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:52,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:52,104 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:52,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:07:52,104 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-28 02:07:52,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:52,105 INFO L85 PathProgramCache]: Analyzing trace with hash 100043706, now seen corresponding path program 1 times [2024-11-28 02:07:52,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:52,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642788731] [2024-11-28 02:07:52,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:52,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:52,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642788731] [2024-11-28 02:07:52,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642788731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:52,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:52,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:52,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657270059] [2024-11-28 02:07:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:52,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:52,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:52,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:52,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:52,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 83 [2024-11-28 02:07:52,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:52,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:52,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 83 [2024-11-28 02:07:52,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:01,958 INFO L124 PetriNetUnfolderBase]: 93886/142065 cut-off events. [2024-11-28 02:08:01,958 INFO L125 PetriNetUnfolderBase]: For 3685/3685 co-relation queries the response was YES. [2024-11-28 02:08:02,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265574 conditions, 142065 events. 93886/142065 cut-off events. For 3685/3685 co-relation queries the response was YES. Maximal size of possible extension queue 3591. Compared 1171504 event pairs, 20774 based on Foata normal form. 1755/141342 useless extension candidates. Maximal degree in co-relation 265566. Up to 48084 conditions per place. [2024-11-28 02:08:02,596 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 99 selfloop transitions, 5 changer transitions 0/128 dead transitions. [2024-11-28 02:08:02,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 128 transitions, 518 flow [2024-11-28 02:08:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:08:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:08:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 251 transitions. [2024-11-28 02:08:02,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6048192771084338 [2024-11-28 02:08:02,598 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 152 flow. Second operand 5 states and 251 transitions. [2024-11-28 02:08:02,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 128 transitions, 518 flow [2024-11-28 02:08:02,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 128 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:08:02,604 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 178 flow [2024-11-28 02:08:02,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-28 02:08:02,605 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -3 predicate places. [2024-11-28 02:08:02,605 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 178 flow [2024-11-28 02:08:02,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:02,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:02,606 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:02,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:08:02,606 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-28 02:08:02,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1436938606, now seen corresponding path program 1 times [2024-11-28 02:08:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017867713] [2024-11-28 02:08:02,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017867713] [2024-11-28 02:08:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017867713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:03,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:03,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:03,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354705027] [2024-11-28 02:08:03,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:03,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:08:03,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:03,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:08:03,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:08:03,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 83 [2024-11-28 02:08:03,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:03,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:03,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 83 [2024-11-28 02:08:03,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand