./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU --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 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:07:59,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:07:59,490 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:07:59,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:07:59,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:07:59,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:07:59,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:07:59,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:07:59,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:07:59,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:07:59,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:07:59,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:07:59,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:07:59,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:07:59,555 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:07:59,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:07:59,556 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:07:59,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:07:59,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:07:59,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:07:59,557 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:07:59,561 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:07:59,562 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:07:59,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:07:59,562 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:07:59,563 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:07:59,563 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:07:59,563 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:07:59,563 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:07:59,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:07:59,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:07:59,564 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:07:59,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:07:59,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:59,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:07:59,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:07:59,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:07:59,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:07:59,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:07:59,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:07:59,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:07:59,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:07:59,569 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2024-10-31 22:07:59,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:07:59,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:07:59,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:07:59,959 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:07:59,959 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:07:59,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i Unable to find full path for "g++" [2024-10-31 22:08:02,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:08:02,375 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:08:02,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2024-10-31 22:08:02,393 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/data/c9da0b01b/67d136c2a0f849fd91a8baa23ea03f0a/FLAGc94b81433 [2024-10-31 22:08:02,409 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/data/c9da0b01b/67d136c2a0f849fd91a8baa23ea03f0a [2024-10-31 22:08:02,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:08:02,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:08:02,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:02,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:08:02,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:08:02,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:02" (1/1) ... [2024-10-31 22:08:02,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659fb6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:02, skipping insertion in model container [2024-10-31 22:08:02,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:02" (1/1) ... [2024-10-31 22:08:02,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:08:03,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:03,109 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:08:03,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:03,273 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:08:03,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03 WrapperNode [2024-10-31 22:08:03,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:03,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:03,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:08:03,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:08:03,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,362 INFO L138 Inliner]: procedures = 176, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2024-10-31 22:08:03,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:03,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:08:03,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:08:03,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:08:03,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,411 INFO L175 MemorySlicer]: Split 25 memory accesses to 2 slices as follows [2, 23]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-10-31 22:08:03,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:08:03,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:08:03,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:08:03,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:08:03,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (1/1) ... [2024-10-31 22:08:03,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:03,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:03,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:08:03,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2446f8e-fa3f-4720-898b-c0771585ca56/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:08:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:08:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:08:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:08:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:08:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:08:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:08:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:08:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:08:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:08:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:08:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:08:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:08:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:08:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:08:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:08:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:08:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:08:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:08:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:08:03,546 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:08:03,818 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:08:03,821 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:08:04,569 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:08:04,570 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:08:05,377 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:08:05,377 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:08:05,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:05 BoogieIcfgContainer [2024-10-31 22:08:05,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:08:05,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:08:05,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:08:05,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:08:05,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:08:02" (1/3) ... [2024-10-31 22:08:05,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b101a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:05, skipping insertion in model container [2024-10-31 22:08:05,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:03" (2/3) ... [2024-10-31 22:08:05,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b101a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:05, skipping insertion in model container [2024-10-31 22:08:05,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:05" (3/3) ... [2024-10-31 22:08:05,391 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2024-10-31 22:08:05,412 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:08:05,413 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-10-31 22:08:05,413 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:08:05,599 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:08:05,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 94 transitions, 204 flow [2024-10-31 22:08:05,711 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2024-10-31 22:08:05,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:08:05,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 365 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2024-10-31 22:08:05,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 94 transitions, 204 flow [2024-10-31 22:08:05,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 90 transitions, 192 flow [2024-10-31 22:08:05,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:08:05,744 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;@3b527815, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:08:05,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-10-31 22:08:05,751 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:08:05,751 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-31 22:08:05,751 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:08:05,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:05,752 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:08:05,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-10-31 22:08:05,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash 805586379, now seen corresponding path program 1 times [2024-10-31 22:08:05,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:05,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518619139] [2024-10-31 22:08:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:05,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:06,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:06,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518619139] [2024-10-31 22:08:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518619139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:06,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:08:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774836681] [2024-10-31 22:08:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:06,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:08:06,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:08:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:08:06,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 94 [2024-10-31 22:08:06,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 90 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:06,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:06,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 94 [2024-10-31 22:08:06,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:20,432 INFO L124 PetriNetUnfolderBase]: 41670/60435 cut-off events. [2024-10-31 22:08:20,433 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:08:20,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115766 conditions, 60435 events. 41670/60435 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3712. Compared 492532 event pairs, 41670 based on Foata normal form. 1960/38304 useless extension candidates. Maximal degree in co-relation 115754. Up to 54867 conditions per place. [2024-10-31 22:08:20,981 INFO L140 encePairwiseOnDemand]: 60/94 looper letters, 38 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-10-31 22:08:20,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 202 flow [2024-10-31 22:08:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:08:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:08:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-10-31 22:08:20,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-10-31 22:08:21,000 INFO L175 Difference]: Start difference. First operand has 101 places, 90 transitions, 192 flow. Second operand 3 states and 135 transitions. [2024-10-31 22:08:21,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 202 flow [2024-10-31 22:08:21,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 198 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:08:21,037 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 122 flow [2024-10-31 22:08:21,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-10-31 22:08:21,043 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, -34 predicate places. [2024-10-31 22:08:21,045 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 122 flow [2024-10-31 22:08:21,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:21,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:21,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:08:21,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:08:21,047 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-10-31 22:08:21,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash 805586380, now seen corresponding path program 1 times [2024-10-31 22:08:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:21,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888664035] [2024-10-31 22:08:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:21,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:21,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:21,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888664035] [2024-10-31 22:08:21,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888664035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:21,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:21,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:08:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597331791] [2024-10-31 22:08:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:21,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:08:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:21,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:08:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:08:21,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 94 [2024-10-31 22:08:21,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:21,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:21,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 94 [2024-10-31 22:08:21,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:23,421 INFO L124 PetriNetUnfolderBase]: 4591/7209 cut-off events. [2024-10-31 22:08:23,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:08:23,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13643 conditions, 7209 events. 4591/7209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 50439 event pairs, 4591 based on Foata normal form. 0/6782 useless extension candidates. Maximal degree in co-relation 13637. Up to 6302 conditions per place. [2024-10-31 22:08:23,479 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 26 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2024-10-31 22:08:23,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 156 flow [2024-10-31 22:08:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:08:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:08:23,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-31 22:08:23,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3617021276595745 [2024-10-31 22:08:23,482 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 122 flow. Second operand 3 states and 102 transitions. [2024-10-31 22:08:23,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 156 flow [2024-10-31 22:08:23,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:08:23,484 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 99 flow [2024-10-31 22:08:23,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-10-31 22:08:23,485 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, -44 predicate places. [2024-10-31 22:08:23,485 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 99 flow [2024-10-31 22:08:23,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:23,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:23,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:23,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:08:23,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-10-31 22:08:23,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash 378831121, now seen corresponding path program 1 times [2024-10-31 22:08:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044452320] [2024-10-31 22:08:23,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:23,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:23,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:23,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044452320] [2024-10-31 22:08:23,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044452320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:23,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:23,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:08:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202352266] [2024-10-31 22:08:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:23,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:08:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:08:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:08:23,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 94 [2024-10-31 22:08:23,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-10-31 22:08:23,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:23,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 94 [2024-10-31 22:08:23,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:25,400 INFO L124 PetriNetUnfolderBase]: 3961/6318 cut-off events. [2024-10-31 22:08:25,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:08:25,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11907 conditions, 6318 events. 3961/6318 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 44193 event pairs, 781 based on Foata normal form. 0/6062 useless extension candidates. Maximal degree in co-relation 11900. Up to 4477 conditions per place. [2024-10-31 22:08:25,460 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 41 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-31 22:08:25,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 219 flow [2024-10-31 22:08:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:08:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:08:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-10-31 22:08:25,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3829787234042553 [2024-10-31 22:08:25,464 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 99 flow. Second operand 3 states and 108 transitions. [2024-10-31 22:08:25,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 219 flow [2024-10-31 22:08:25,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:08:25,467 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-10-31 22:08:25,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-10-31 22:08:25,468 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, -43 predicate places. [2024-10-31 22:08:25,469 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-10-31 22:08:25,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-10-31 22:08:25,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:25,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:25,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:08:25,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-10-31 22:08:25,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1015373052, now seen corresponding path program 1 times [2024-10-31 22:08:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78904139] [2024-10-31 22:08:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:25,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78904139] [2024-10-31 22:08:25,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78904139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:25,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:25,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268692419] [2024-10-31 22:08:25,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:25,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:25,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:25,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:25,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 94 [2024-10-31 22:08:25,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-10-31 22:08:25,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:25,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 94 [2024-10-31 22:08:25,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:27,540 INFO L124 PetriNetUnfolderBase]: 3664/5913 cut-off events. [2024-10-31 22:08:27,540 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-10-31 22:08:27,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11831 conditions, 5913 events. 3664/5913 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 41309 event pairs, 709 based on Foata normal form. 0/5873 useless extension candidates. Maximal degree in co-relation 11822. Up to 4071 conditions per place. [2024-10-31 22:08:27,605 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 40 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-31 22:08:27,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-10-31 22:08:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:08:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:08:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-31 22:08:27,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3377659574468085 [2024-10-31 22:08:27,614 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 127 transitions. [2024-10-31 22:08:27,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-10-31 22:08:27,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:08:27,623 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-10-31 22:08:27,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-10-31 22:08:27,625 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, -43 predicate places. [2024-10-31 22:08:27,625 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-10-31 22:08:27,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-10-31 22:08:27,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:27,626 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:27,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:08:27,627 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-10-31 22:08:27,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:27,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1015373051, now seen corresponding path program 1 times [2024-10-31 22:08:27,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:27,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063820548] [2024-10-31 22:08:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:27,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063820548] [2024-10-31 22:08:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063820548] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:27,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:27,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:27,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467662044] [2024-10-31 22:08:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:27,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:08:27,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:08:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:08:27,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 94 [2024-10-31 22:08:27,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 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) [2024-10-31 22:08:27,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:27,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 94 [2024-10-31 22:08:27,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:29,792 INFO L124 PetriNetUnfolderBase]: 3367/5412 cut-off events. [2024-10-31 22:08:29,793 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-10-31 22:08:29,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10817 conditions, 5412 events. 3367/5412 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35866 event pairs, 1021 based on Foata normal form. 108/5480 useless extension candidates. Maximal degree in co-relation 10808. Up to 3666 conditions per place. [2024-10-31 22:08:29,843 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-31 22:08:29,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 216 flow [2024-10-31 22:08:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:08:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:08:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-10-31 22:08:29,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3351063829787234 [2024-10-31 22:08:29,846 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 126 transitions. [2024-10-31 22:08:29,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 216 flow [2024-10-31 22:08:29,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 211 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:08:29,850 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-10-31 22:08:29,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-10-31 22:08:29,851 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, -44 predicate places. [2024-10-31 22:08:29,852 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-10-31 22:08:29,852 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) [2024-10-31 22:08:29,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:29,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:29,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:08:29,856 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-10-31 22:08:29,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:29,857 INFO L85 PathProgramCache]: Analyzing trace with hash -923496154, now seen corresponding path program 1 times [2024-10-31 22:08:29,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:29,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609955211] [2024-10-31 22:08:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:29,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:29,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609955211] [2024-10-31 22:08:29,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609955211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:29,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:29,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:08:29,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135771589] [2024-10-31 22:08:29,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:29,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:08:29,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:29,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:08:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:08:29,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 94 [2024-10-31 22:08:29,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-10-31 22:08:29,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:29,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 94 [2024-10-31 22:08:29,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand