./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd --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 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:00:05,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:00:05,312 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 16:00:05,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:00:05,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:00:05,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:00:05,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:00:05,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:00:05,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:00:05,382 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:00:05,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:00:05,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:00:05,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:00:05,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:00:05,383 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:00:05,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:00:05,383 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:00:05,384 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:00:05,385 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:00:05,385 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:00:05,385 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:00:05,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:00:05,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:00:05,387 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:00:05,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:00:05,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:00:05,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:00:05,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:00:05,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:00:05,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:00:05,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:00:05,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:00:05,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:00:05,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:00:05,390 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_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd 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 -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2024-11-13 16:00:05,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:00:05,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:00:05,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:00:05,782 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:00:05,782 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:00:05,784 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/08_rand_cas.i Unable to find full path for "g++" [2024-11-13 16:00:08,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:00:08,636 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:00:08,637 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2024-11-13 16:00:08,659 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/data/9a85f30ae/ee4f4828c5e344d5ba56571153ffa4cb/FLAG28b7a0144 [2024-11-13 16:00:08,679 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/data/9a85f30ae/ee4f4828c5e344d5ba56571153ffa4cb [2024-11-13 16:00:08,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:00:08,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:00:08,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:00:08,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:00:08,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:00:08,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:00:08" (1/1) ... [2024-11-13 16:00:08,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c967d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:08, skipping insertion in model container [2024-11-13 16:00:08,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:00:08" (1/1) ... [2024-11-13 16:00:08,753 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:00:09,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:00:09,186 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:00:09,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:00:09,314 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:00:09,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09 WrapperNode [2024-11-13 16:00:09,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:00:09,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:00:09,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:00:09,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:00:09,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,393 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 147 [2024-11-13 16:00:09,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:00:09,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:00:09,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:00:09,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:00:09,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,443 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 6, 3]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-13 16:00:09,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:00:09,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:00:09,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:00:09,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:00:09,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (1/1) ... [2024-11-13 16:00:09,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:00:09,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:09,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:00:09,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21639d25-52b0-4f95-acab-3f543147da07/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:00:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:00:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:00:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 16:00:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 16:00:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 16:00:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:00:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:00:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 16:00:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 16:00:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:00:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:00:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:00:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:00:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:00:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 16:00:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 16:00:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:00:09,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:00:09,571 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 16:00:09,791 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:00:09,793 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:00:10,225 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:00:10,225 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:00:10,543 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:00:10,543 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 16:00:10,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:00:10 BoogieIcfgContainer [2024-11-13 16:00:10,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:00:10,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:00:10,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:00:10,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:00:10,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:00:08" (1/3) ... [2024-11-13 16:00:10,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8ebf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:00:10, skipping insertion in model container [2024-11-13 16:00:10,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:00:09" (2/3) ... [2024-11-13 16:00:10,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8ebf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:00:10, skipping insertion in model container [2024-11-13 16:00:10,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:00:10" (3/3) ... [2024-11-13 16:00:10,560 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2024-11-13 16:00:10,577 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:00:10,579 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 08_rand_cas.i that has 2 procedures, 64 locations, 1 initial locations, 4 loop locations, and 20 error locations. [2024-11-13 16:00:10,580 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:00:10,721 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 16:00:10,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 77 transitions, 158 flow [2024-11-13 16:00:10,846 INFO L124 PetriNetUnfolderBase]: 13/81 cut-off events. [2024-11-13 16:00:10,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:00:10,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 13/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 205 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 74. Up to 3 conditions per place. [2024-11-13 16:00:10,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 77 transitions, 158 flow [2024-11-13 16:00:10,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 77 transitions, 158 flow [2024-11-13 16:00:10,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:00:10,904 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;@61483922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:00:10,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-11-13 16:00:10,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:00:10,915 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 16:00:10,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:00:10,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:00:10,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:00:10,917 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-13 16:00:10,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:10,923 INFO L85 PathProgramCache]: Analyzing trace with hash 492131, now seen corresponding path program 1 times [2024-11-13 16:00:10,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:10,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800489045] [2024-11-13 16:00:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:11,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800489045] [2024-11-13 16:00:11,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800489045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:11,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:00:11,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75092455] [2024-11-13 16:00:11,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:11,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 16:00:11,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 16:00:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:00:11,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-11-13 16:00:11,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2024-11-13 16:00:11,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:00:11,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-11-13 16:00:11,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:00:11,370 INFO L124 PetriNetUnfolderBase]: 70/224 cut-off events. [2024-11-13 16:00:11,372 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:00:11,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 224 events. 70/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 849 event pairs, 58 based on Foata normal form. 24/197 useless extension candidates. Maximal degree in co-relation 367. Up to 156 conditions per place. [2024-11-13 16:00:11,378 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 34 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2024-11-13 16:00:11,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 192 flow [2024-11-13 16:00:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 16:00:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 16:00:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2024-11-13 16:00:11,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6493506493506493 [2024-11-13 16:00:11,402 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 158 flow. Second operand 2 states and 100 transitions. [2024-11-13 16:00:11,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 192 flow [2024-11-13 16:00:11,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 16:00:11,415 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 124 flow [2024-11-13 16:00:11,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-11-13 16:00:11,428 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2024-11-13 16:00:11,428 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 124 flow [2024-11-13 16:00:11,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2024-11-13 16:00:11,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:00:11,429 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 16:00:11,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:00:11,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-13 16:00:11,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:11,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1778245761, now seen corresponding path program 1 times [2024-11-13 16:00:11,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:11,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253822334] [2024-11-13 16:00:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:00:11,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 16:00:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:00:11,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 16:00:11,532 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 16:00:11,534 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2024-11-13 16:00:11,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 40 remaining) [2024-11-13 16:00:11,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 40 remaining) [2024-11-13 16:00:11,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 40 remaining) [2024-11-13 16:00:11,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 40 remaining) [2024-11-13 16:00:11,540 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 40 remaining) [2024-11-13 16:00:11,540 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 40 remaining) [2024-11-13 16:00:11,540 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (32 of 40 remaining) [2024-11-13 16:00:11,540 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (31 of 40 remaining) [2024-11-13 16:00:11,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 40 remaining) [2024-11-13 16:00:11,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 40 remaining) [2024-11-13 16:00:11,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 40 remaining) [2024-11-13 16:00:11,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 40 remaining) [2024-11-13 16:00:11,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 40 remaining) [2024-11-13 16:00:11,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 40 remaining) [2024-11-13 16:00:11,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 40 remaining) [2024-11-13 16:00:11,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 40 remaining) [2024-11-13 16:00:11,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 40 remaining) [2024-11-13 16:00:11,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 40 remaining) [2024-11-13 16:00:11,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (20 of 40 remaining) [2024-11-13 16:00:11,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 40 remaining) [2024-11-13 16:00:11,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (12 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (11 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 40 remaining) [2024-11-13 16:00:11,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 40 remaining) [2024-11-13 16:00:11,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 40 remaining) [2024-11-13 16:00:11,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 40 remaining) [2024-11-13 16:00:11,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 40 remaining) [2024-11-13 16:00:11,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 40 remaining) [2024-11-13 16:00:11,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 40 remaining) [2024-11-13 16:00:11,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 40 remaining) [2024-11-13 16:00:11,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 40 remaining) [2024-11-13 16:00:11,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 40 remaining) [2024-11-13 16:00:11,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (0 of 40 remaining) [2024-11-13 16:00:11,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:00:11,549 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 16:00:11,553 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 16:00:11,553 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 16:00:11,701 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 16:00:11,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 147 transitions, 304 flow [2024-11-13 16:00:11,795 INFO L124 PetriNetUnfolderBase]: 26/156 cut-off events. [2024-11-13 16:00:11,796 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:00:11,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 156 events. 26/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 616 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2024-11-13 16:00:11,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 147 transitions, 304 flow [2024-11-13 16:00:11,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 147 transitions, 304 flow [2024-11-13 16:00:11,813 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:00:11,814 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;@61483922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:00:11,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-11-13 16:00:11,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:00:11,818 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 16:00:11,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:00:11,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:00:11,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:00:11,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-13 16:00:11,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash 638102, now seen corresponding path program 1 times [2024-11-13 16:00:11,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:11,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136004294] [2024-11-13 16:00:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:11,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:11,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136004294] [2024-11-13 16:00:11,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136004294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:11,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:11,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:00:11,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401859543] [2024-11-13 16:00:11,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:11,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 16:00:11,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:11,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 16:00:11,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:00:11,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 147 [2024-11-13 16:00:11,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 147 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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) [2024-11-13 16:00:11,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:00:11,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 147 [2024-11-13 16:00:11,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:00:14,025 INFO L124 PetriNetUnfolderBase]: 4969/10043 cut-off events. [2024-11-13 16:00:14,025 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-13 16:00:14,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17698 conditions, 10043 events. 4969/10043 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 85367 event pairs, 4408 based on Foata normal form. 1464/8829 useless extension candidates. Maximal degree in co-relation 10993. Up to 7560 conditions per place. [2024-11-13 16:00:14,119 INFO L140 encePairwiseOnDemand]: 124/147 looper letters, 65 selfloop transitions, 0 changer transitions 0/116 dead transitions. [2024-11-13 16:00:14,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 372 flow [2024-11-13 16:00:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 16:00:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 16:00:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2024-11-13 16:00:14,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-13 16:00:14,124 INFO L175 Difference]: Start difference. First operand has 126 places, 147 transitions, 304 flow. Second operand 2 states and 192 transitions. [2024-11-13 16:00:14,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 372 flow [2024-11-13 16:00:14,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 16:00:14,130 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 242 flow [2024-11-13 16:00:14,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-11-13 16:00:14,132 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -12 predicate places. [2024-11-13 16:00:14,132 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 242 flow [2024-11-13 16:00:14,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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) [2024-11-13 16:00:14,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:00:14,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:14,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:00:14,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-13 16:00:14,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1718973711, now seen corresponding path program 1 times [2024-11-13 16:00:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:14,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548232028] [2024-11-13 16:00:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:14,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:14,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548232028] [2024-11-13 16:00:14,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548232028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:14,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:14,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 16:00:14,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379099080] [2024-11-13 16:00:14,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:14,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:00:14,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:14,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:00:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:00:14,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 147 [2024-11-13 16:00:14,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2024-11-13 16:00:14,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:00:14,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 147 [2024-11-13 16:00:14,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:00:15,939 INFO L124 PetriNetUnfolderBase]: 4269/8806 cut-off events. [2024-11-13 16:00:15,939 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-13 16:00:15,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15484 conditions, 8806 events. 4269/8806 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 73594 event pairs, 3102 based on Foata normal form. 0/6750 useless extension candidates. Maximal degree in co-relation 15479. Up to 5153 conditions per place. [2024-11-13 16:00:16,005 INFO L140 encePairwiseOnDemand]: 136/147 looper letters, 119 selfloop transitions, 3 changer transitions 0/171 dead transitions. [2024-11-13 16:00:16,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 171 transitions, 601 flow [2024-11-13 16:00:16,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:00:16,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:00:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2024-11-13 16:00:16,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-11-13 16:00:16,010 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 242 flow. Second operand 3 states and 280 transitions. [2024-11-13 16:00:16,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 171 transitions, 601 flow [2024-11-13 16:00:16,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 601 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 16:00:16,019 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 275 flow [2024-11-13 16:00:16,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2024-11-13 16:00:16,020 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -9 predicate places. [2024-11-13 16:00:16,020 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 275 flow [2024-11-13 16:00:16,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2024-11-13 16:00:16,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:00:16,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:16,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:00:16,021 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-13 16:00:16,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1718973712, now seen corresponding path program 1 times [2024-11-13 16:00:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:16,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233188628] [2024-11-13 16:00:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:16,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:16,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:16,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233188628] [2024-11-13 16:00:16,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233188628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:16,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:16,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 16:00:16,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538977076] [2024-11-13 16:00:16,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:16,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:00:16,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:00:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:00:16,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 147 [2024-11-13 16:00:16,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2024-11-13 16:00:16,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:00:16,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 147 [2024-11-13 16:00:16,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:00:17,475 INFO L124 PetriNetUnfolderBase]: 3420/7215 cut-off events. [2024-11-13 16:00:17,475 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-13 16:00:17,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12903 conditions, 7215 events. 3420/7215 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 58536 event pairs, 3084 based on Foata normal form. 0/5900 useless extension candidates. Maximal degree in co-relation 12896. Up to 5255 conditions per place. [2024-11-13 16:00:17,534 INFO L140 encePairwiseOnDemand]: 138/147 looper letters, 60 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2024-11-13 16:00:17,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 110 transitions, 381 flow [2024-11-13 16:00:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:00:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:00:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-13 16:00:17,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-11-13 16:00:17,538 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 275 flow. Second operand 3 states and 217 transitions. [2024-11-13 16:00:17,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 110 transitions, 381 flow [2024-11-13 16:00:17,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:00:17,549 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 258 flow [2024-11-13 16:00:17,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-11-13 16:00:17,550 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -16 predicate places. [2024-11-13 16:00:17,550 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 258 flow [2024-11-13 16:00:17,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2024-11-13 16:00:17,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:00:17,551 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-13 16:00:17,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:00:17,551 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-13 16:00:17,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash -836238290, now seen corresponding path program 1 times [2024-11-13 16:00:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:17,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182381365] [2024-11-13 16:00:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:17,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:00:17,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 16:00:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:00:17,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 16:00:17,597 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 16:00:17,597 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (58 of 59 remaining) [2024-11-13 16:00:17,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 59 remaining) [2024-11-13 16:00:17,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 59 remaining) [2024-11-13 16:00:17,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 59 remaining) [2024-11-13 16:00:17,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 59 remaining) [2024-11-13 16:00:17,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (51 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (50 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 59 remaining) [2024-11-13 16:00:17,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (39 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (31 of 59 remaining) [2024-11-13 16:00:17,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (30 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 59 remaining) [2024-11-13 16:00:17,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (19 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (12 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (11 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 59 remaining) [2024-11-13 16:00:17,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 59 remaining) [2024-11-13 16:00:17,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 59 remaining) [2024-11-13 16:00:17,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 59 remaining) [2024-11-13 16:00:17,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 59 remaining) [2024-11-13 16:00:17,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 59 remaining) [2024-11-13 16:00:17,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 59 remaining) [2024-11-13 16:00:17,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 59 remaining) [2024-11-13 16:00:17,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 59 remaining) [2024-11-13 16:00:17,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (0 of 59 remaining) [2024-11-13 16:00:17,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:00:17,603 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 16:00:17,603 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 16:00:17,604 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 16:00:17,753 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 16:00:17,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 217 transitions, 452 flow [2024-11-13 16:00:17,812 INFO L124 PetriNetUnfolderBase]: 39/231 cut-off events. [2024-11-13 16:00:17,812 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 16:00:17,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 39/231 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1073 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 212. Up to 4 conditions per place. [2024-11-13 16:00:17,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 217 transitions, 452 flow [2024-11-13 16:00:17,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 217 transitions, 452 flow [2024-11-13 16:00:17,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:00:17,825 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;@61483922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:00:17,825 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2024-11-13 16:00:17,828 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:00:17,828 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 16:00:17,828 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:00:17,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:00:17,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:00:17,828 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-11-13 16:00:17,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash 853583, now seen corresponding path program 1 times [2024-11-13 16:00:17,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:17,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996406659] [2024-11-13 16:00:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:17,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:17,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:17,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996406659] [2024-11-13 16:00:17,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996406659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:17,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:17,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:00:17,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472026902] [2024-11-13 16:00:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:17,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 16:00:17,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:17,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 16:00:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:00:17,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 217 [2024-11-13 16:00:17,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 217 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2024-11-13 16:00:17,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:00:17,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 217 [2024-11-13 16:00:17,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand