./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:08:53,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:08:53,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:08:53,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:08:53,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:08:53,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:08:53,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:08:53,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:08:53,460 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:08:53,460 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:08:53,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:08:53,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:08:53,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:08:53,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:08:53,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:08:53,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:08:53,462 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:08:53,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:08:53,462 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:08:53,462 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:08:53,462 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:08:53,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:08:53,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:08:53,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:08:53,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:08:53,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:08:53,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:08:53,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:08:53,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:08:53,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:08:53,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:08:53,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:08:53,463 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:08:53,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:08:53,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:08:53,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:08:53,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:08:53,464 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:08:53,464 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:08:53,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:08:53,464 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_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1 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 ! call(reach_error())) ) 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 -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2024-12-02 10:08:53,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:08:53,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:08:53,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:08:53,693 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:08:53,693 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:08:53,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-12-02 10:08:56,488 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/data/862e77f84/fbed52db995c47279ba05b91cbf823ca/FLAGb5700f05f [2024-12-02 10:08:56,697 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:08:56,698 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-12-02 10:08:56,707 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/data/862e77f84/fbed52db995c47279ba05b91cbf823ca/FLAGb5700f05f [2024-12-02 10:08:57,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/data/862e77f84/fbed52db995c47279ba05b91cbf823ca [2024-12-02 10:08:57,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:08:57,046 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:08:57,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:08:57,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:08:57,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:08:57,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a83c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57, skipping insertion in model container [2024-12-02 10:08:57,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,072 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:08:57,254 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-12-02 10:08:57,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:08:57,273 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:08:57,309 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-12-02 10:08:57,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:08:57,328 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:08:57,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57 WrapperNode [2024-12-02 10:08:57,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:08:57,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:08:57,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:08:57,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:08:57,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,381 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 453 [2024-12-02 10:08:57,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:08:57,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:08:57,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:08:57,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:08:57,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,397 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,418 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-12-02 10:08:57,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,433 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:08:57,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:08:57,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:08:57,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:08:57,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (1/1) ... [2024-12-02 10:08:57,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:08:57,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:08:57,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:08:57,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:08:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:08:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 10:08:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 10:08:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 10:08:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 10:08:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 10:08:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 10:08:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:08:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:08:57,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:08:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:08:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:08:57,521 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 10:08:57,648 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:08:57,650 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:08:58,333 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 10:08:58,333 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:08:58,869 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:08:58,870 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-12-02 10:08:58,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:08:58 BoogieIcfgContainer [2024-12-02 10:08:58,870 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:08:58,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:08:58,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:08:58,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:08:58,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:08:57" (1/3) ... [2024-12-02 10:08:58,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5965d5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:08:58, skipping insertion in model container [2024-12-02 10:08:58,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:08:57" (2/3) ... [2024-12-02 10:08:58,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5965d5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:08:58, skipping insertion in model container [2024-12-02 10:08:58,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:08:58" (3/3) ... [2024-12-02 10:08:58,881 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-12-02 10:08:58,901 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:08:58,903 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-2.wvr-bad.c that has 5 procedures, 61 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2024-12-02 10:08:58,903 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 10:08:58,981 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 10:08:59,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 84 transitions, 196 flow [2024-12-02 10:08:59,076 INFO L124 PetriNetUnfolderBase]: 24/80 cut-off events. [2024-12-02 10:08:59,078 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 10:08:59,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 24/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 181 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2024-12-02 10:08:59,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 84 transitions, 196 flow [2024-12-02 10:08:59,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 79 transitions, 182 flow [2024-12-02 10:08:59,097 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:08:59,110 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=LoopHeads, 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;@651e9c5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:08:59,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 10:08:59,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 10:08:59,138 INFO L124 PetriNetUnfolderBase]: 24/78 cut-off events. [2024-12-02 10:08:59,138 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 10:08:59,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:08:59,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:08:59,140 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:08:59,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:08:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash -412637579, now seen corresponding path program 1 times [2024-12-02 10:08:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:08:59,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254180305] [2024-12-02 10:08:59,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:08:59,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:08:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:08:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:08:59,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:08:59,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254180305] [2024-12-02 10:08:59,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254180305] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:08:59,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:08:59,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:08:59,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142597756] [2024-12-02 10:08:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:08:59,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:08:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:08:59,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:08:59,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:08:59,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-12-02 10:08:59,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2024-12-02 10:08:59,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:08:59,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-12-02 10:08:59,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:09:01,012 INFO L124 PetriNetUnfolderBase]: 8518/11283 cut-off events. [2024-12-02 10:09:01,013 INFO L125 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2024-12-02 10:09:01,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21655 conditions, 11283 events. 8518/11283 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 49391 event pairs, 4408 based on Foata normal form. 0/9001 useless extension candidates. Maximal degree in co-relation 20124. Up to 9899 conditions per place. [2024-12-02 10:09:01,125 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 50 selfloop transitions, 0 changer transitions 0/75 dead transitions. [2024-12-02 10:09:01,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 274 flow [2024-12-02 10:09:01,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:09:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 10:09:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 112 transitions. [2024-12-02 10:09:01,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 10:09:01,143 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 182 flow. Second operand 2 states and 112 transitions. [2024-12-02 10:09:01,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 274 flow [2024-12-02 10:09:01,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 258 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-12-02 10:09:01,171 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 158 flow [2024-12-02 10:09:01,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2024-12-02 10:09:01,179 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2024-12-02 10:09:01,179 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 158 flow [2024-12-02 10:09:01,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2024-12-02 10:09:01,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:09:01,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:09:01,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:09:01,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:09:01,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1369401587, now seen corresponding path program 1 times [2024-12-02 10:09:01,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:01,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095665792] [2024-12-02 10:09:01,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:01,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:09:01,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095665792] [2024-12-02 10:09:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095665792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:01,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:01,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:09:01,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123962883] [2024-12-02 10:09:01,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:01,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:09:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:01,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:09:01,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:09:01,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-12-02 10:09:01,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-12-02 10:09:01,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:09:01,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-12-02 10:09:01,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:09:03,700 INFO L124 PetriNetUnfolderBase]: 17001/24914 cut-off events. [2024-12-02 10:09:03,700 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-12-02 10:09:03,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45013 conditions, 24914 events. 17001/24914 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 154783 event pairs, 4408 based on Foata normal form. 1/19503 useless extension candidates. Maximal degree in co-relation 45010. Up to 11771 conditions per place. [2024-12-02 10:09:03,858 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 81 selfloop transitions, 7 changer transitions 1/114 dead transitions. [2024-12-02 10:09:03,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 421 flow [2024-12-02 10:09:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:09:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:09:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-12-02 10:09:03,861 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-12-02 10:09:03,861 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 158 flow. Second operand 3 states and 177 transitions. [2024-12-02 10:09:03,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 421 flow [2024-12-02 10:09:03,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 114 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 10:09:03,865 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 205 flow [2024-12-02 10:09:03,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2024-12-02 10:09:03,866 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-12-02 10:09:03,866 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 205 flow [2024-12-02 10:09:03,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-12-02 10:09:03,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:09:03,867 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:09:03,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:09:03,867 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:09:03,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1497666123, now seen corresponding path program 1 times [2024-12-02 10:09:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158629131] [2024-12-02 10:09:03,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:09:04,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:04,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158629131] [2024-12-02 10:09:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158629131] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:04,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:04,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:09:04,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118835258] [2024-12-02 10:09:04,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:04,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:09:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:04,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:09:04,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:09:04,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-12-02 10:09:04,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-12-02 10:09:04,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:09:04,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-12-02 10:09:04,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:09:06,748 INFO L124 PetriNetUnfolderBase]: 32158/43938 cut-off events. [2024-12-02 10:09:06,748 INFO L125 PetriNetUnfolderBase]: For 7889/7913 co-relation queries the response was YES. [2024-12-02 10:09:06,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90622 conditions, 43938 events. 32158/43938 cut-off events. For 7889/7913 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 253188 event pairs, 10476 based on Foata normal form. 1830/36123 useless extension candidates. Maximal degree in co-relation 90617. Up to 21608 conditions per place. [2024-12-02 10:09:06,991 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 90 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2024-12-02 10:09:06,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 492 flow [2024-12-02 10:09:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:09:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:09:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-12-02 10:09:06,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-12-02 10:09:06,993 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 205 flow. Second operand 3 states and 175 transitions. [2024-12-02 10:09:06,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 492 flow [2024-12-02 10:09:06,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 119 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:09:06,999 INFO L231 Difference]: Finished difference. Result has 66 places, 84 transitions, 234 flow [2024-12-02 10:09:07,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=66, PETRI_TRANSITIONS=84} [2024-12-02 10:09:07,000 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2024-12-02 10:09:07,000 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 84 transitions, 234 flow [2024-12-02 10:09:07,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-12-02 10:09:07,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:09:07,001 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:09:07,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:09:07,001 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:09:07,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1114035849, now seen corresponding path program 1 times [2024-12-02 10:09:07,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:07,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735689272] [2024-12-02 10:09:07,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:07,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:09:07,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:07,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735689272] [2024-12-02 10:09:07,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735689272] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:07,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:07,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:09:07,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558078095] [2024-12-02 10:09:07,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:07,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:09:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:07,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:09:07,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:09:07,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-12-02 10:09:07,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 84 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-12-02 10:09:07,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:09:07,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-12-02 10:09:07,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:09:12,974 INFO L124 PetriNetUnfolderBase]: 62475/94740 cut-off events. [2024-12-02 10:09:12,975 INFO L125 PetriNetUnfolderBase]: For 25797/25928 co-relation queries the response was YES. [2024-12-02 10:09:13,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194626 conditions, 94740 events. 62475/94740 cut-off events. For 25797/25928 co-relation queries the response was YES. Maximal size of possible extension queue 2895. Compared 748446 event pairs, 18832 based on Foata normal form. 1310/74747 useless extension candidates. Maximal degree in co-relation 194620. Up to 38827 conditions per place. [2024-12-02 10:09:13,524 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 104 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2024-12-02 10:09:13,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 131 transitions, 596 flow [2024-12-02 10:09:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:09:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:09:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-12-02 10:09:13,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-12-02 10:09:13,526 INFO L175 Difference]: Start difference. First operand has 66 places, 84 transitions, 234 flow. Second operand 3 states and 177 transitions. [2024-12-02 10:09:13,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 131 transitions, 596 flow [2024-12-02 10:09:13,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 131 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:09:13,541 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 244 flow [2024-12-02 10:09:13,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2024-12-02 10:09:13,542 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2024-12-02 10:09:13,542 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 244 flow [2024-12-02 10:09:13,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-12-02 10:09:13,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:09:13,542 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:09:13,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:09:13,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:09:13,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:13,543 INFO L85 PathProgramCache]: Analyzing trace with hash 113445167, now seen corresponding path program 1 times [2024-12-02 10:09:13,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713867179] [2024-12-02 10:09:13,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:13,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:09:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713867179] [2024-12-02 10:09:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713867179] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:13,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:13,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:09:13,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226299387] [2024-12-02 10:09:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:13,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:09:13,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:13,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:09:13,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:09:13,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-12-02 10:09:13,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-12-02 10:09:13,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:09:13,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-12-02 10:09:13,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:09:23,986 INFO L124 PetriNetUnfolderBase]: 121625/186010 cut-off events. [2024-12-02 10:09:23,986 INFO L125 PetriNetUnfolderBase]: For 59254/59516 co-relation queries the response was YES. [2024-12-02 10:09:24,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381604 conditions, 186010 events. 121625/186010 cut-off events. For 59254/59516 co-relation queries the response was YES. Maximal size of possible extension queue 5073. Compared 1592112 event pairs, 38270 based on Foata normal form. 2440/146124 useless extension candidates. Maximal degree in co-relation 381597. Up to 76103 conditions per place. [2024-12-02 10:09:24,927 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 106 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-12-02 10:09:24,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 133 transitions, 618 flow [2024-12-02 10:09:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:09:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:09:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-12-02 10:09:24,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-12-02 10:09:24,929 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 244 flow. Second operand 3 states and 177 transitions. [2024-12-02 10:09:24,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 133 transitions, 618 flow [2024-12-02 10:09:24,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:09:24,954 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 256 flow [2024-12-02 10:09:24,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2024-12-02 10:09:24,955 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2024-12-02 10:09:24,955 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 256 flow [2024-12-02 10:09:24,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-12-02 10:09:24,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:09:24,955 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:09:24,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:09:24,955 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:09:24,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:24,956 INFO L85 PathProgramCache]: Analyzing trace with hash -371920004, now seen corresponding path program 1 times [2024-12-02 10:09:24,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:24,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804855625] [2024-12-02 10:09:24,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:09:25,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804855625] [2024-12-02 10:09:25,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804855625] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:25,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:25,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:09:25,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932644332] [2024-12-02 10:09:25,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:25,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:09:25,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:25,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:09:25,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:09:25,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2024-12-02 10:09:25,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-12-02 10:09:25,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:09:25,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2024-12-02 10:09:25,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:09:40,588 INFO L124 PetriNetUnfolderBase]: 203348/276567 cut-off events. [2024-12-02 10:09:40,588 INFO L125 PetriNetUnfolderBase]: For 113636/113904 co-relation queries the response was YES. [2024-12-02 10:09:41,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619733 conditions, 276567 events. 203348/276567 cut-off events. For 113636/113904 co-relation queries the response was YES. Maximal size of possible extension queue 6463. Compared 1926905 event pairs, 92755 based on Foata normal form. 0/221210 useless extension candidates. Maximal degree in co-relation 619725. Up to 154917 conditions per place. [2024-12-02 10:09:41,946 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 98 selfloop transitions, 6 changer transitions 0/126 dead transitions. [2024-12-02 10:09:41,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 603 flow [2024-12-02 10:09:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:09:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:09:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-12-02 10:09:41,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-12-02 10:09:41,947 INFO L175 Difference]: Start difference. First operand has 70 places, 86 transitions, 256 flow. Second operand 3 states and 165 transitions. [2024-12-02 10:09:41,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 603 flow [2024-12-02 10:09:41,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 600 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:09:41,994 INFO L231 Difference]: Finished difference. Result has 73 places, 87 transitions, 284 flow [2024-12-02 10:09:41,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=73, PETRI_TRANSITIONS=87} [2024-12-02 10:09:41,995 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2024-12-02 10:09:41,995 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 87 transitions, 284 flow [2024-12-02 10:09:41,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-12-02 10:09:41,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:09:41,995 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:09:41,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:09:41,996 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:09:41,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:09:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash 671697579, now seen corresponding path program 1 times [2024-12-02 10:09:41,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:09:41,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653881546] [2024-12-02 10:09:41,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:09:41,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:09:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:09:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:09:42,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:09:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653881546] [2024-12-02 10:09:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653881546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:09:42,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:09:42,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:09:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559135260] [2024-12-02 10:09:42,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:09:42,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:09:42,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:09:42,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:09:42,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:09:42,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-12-02 10:09:42,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-12-02 10:09:42,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:09:42,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-12-02 10:09:42,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:09:58,764 INFO L124 PetriNetUnfolderBase]: 203245/288129 cut-off events. [2024-12-02 10:09:58,765 INFO L125 PetriNetUnfolderBase]: For 143394/145348 co-relation queries the response was YES. [2024-12-02 10:09:59,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643839 conditions, 288129 events. 203245/288129 cut-off events. For 143394/145348 co-relation queries the response was YES. Maximal size of possible extension queue 7144. Compared 2217108 event pairs, 141315 based on Foata normal form. 5522/238057 useless extension candidates. Maximal degree in co-relation 643830. Up to 194331 conditions per place. [2024-12-02 10:10:00,074 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 103 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-12-02 10:10:00,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 133 transitions, 624 flow [2024-12-02 10:10:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:10:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:10:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2024-12-02 10:10:00,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-12-02 10:10:00,076 INFO L175 Difference]: Start difference. First operand has 73 places, 87 transitions, 284 flow. Second operand 5 states and 240 transitions. [2024-12-02 10:10:00,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 133 transitions, 624 flow [2024-12-02 10:10:01,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 133 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:10:01,386 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 304 flow [2024-12-02 10:10:01,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2024-12-02 10:10:01,387 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2024-12-02 10:10:01,387 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 304 flow [2024-12-02 10:10:01,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-12-02 10:10:01,387 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:10:01,387 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:10:01,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:10:01,387 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:10:01,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:01,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1365684550, now seen corresponding path program 1 times [2024-12-02 10:10:01,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:01,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324455442] [2024-12-02 10:10:01,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:01,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:10:02,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324455442] [2024-12-02 10:10:02,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324455442] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:10:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110749061] [2024-12-02 10:10:02,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:02,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:10:02,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:10:02,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:10:02,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:10:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:02,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 10:10:02,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:10:02,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-12-02 10:10:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:10:02,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:10:03,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-12-02 10:10:03,216 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-12-02 10:10:03,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-12-02 10:10:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:10:03,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110749061] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:10:03,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:10:03,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-12-02 10:10:03,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902449221] [2024-12-02 10:10:03,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:10:03,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 10:10:03,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:03,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 10:10:03,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:10:03,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-12-02 10:10:03,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 304 flow. Second operand has 22 states, 22 states have (on average 34.04545454545455) internal successors, (749), 22 states have internal predecessors, (749), 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) [2024-12-02 10:10:03,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:10:03,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-12-02 10:10:03,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:11:19,076 INFO L124 PetriNetUnfolderBase]: 890540/1228488 cut-off events. [2024-12-02 10:11:19,077 INFO L125 PetriNetUnfolderBase]: For 638342/657339 co-relation queries the response was YES. [2024-12-02 10:11:22,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817064 conditions, 1228488 events. 890540/1228488 cut-off events. For 638342/657339 co-relation queries the response was YES. Maximal size of possible extension queue 27510. Compared 10162635 event pairs, 109105 based on Foata normal form. 1680/984255 useless extension candidates. Maximal degree in co-relation 2817052. Up to 186905 conditions per place. [2024-12-02 10:11:25,820 INFO L140 encePairwiseOnDemand]: 59/84 looper letters, 700 selfloop transitions, 171 changer transitions 9/906 dead transitions. [2024-12-02 10:11:25,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 906 transitions, 4648 flow [2024-12-02 10:11:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 10:11:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-12-02 10:11:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1710 transitions. [2024-12-02 10:11:25,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6566820276497696 [2024-12-02 10:11:25,825 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 304 flow. Second operand 31 states and 1710 transitions. [2024-12-02 10:11:25,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 906 transitions, 4648 flow [2024-12-02 10:11:26,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 906 transitions, 4644 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 10:11:26,105 INFO L231 Difference]: Finished difference. Result has 125 places, 260 transitions, 1844 flow [2024-12-02 10:11:26,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1844, PETRI_PLACES=125, PETRI_TRANSITIONS=260} [2024-12-02 10:11:26,106 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 57 predicate places. [2024-12-02 10:11:26,106 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 260 transitions, 1844 flow [2024-12-02 10:11:26,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 34.04545454545455) internal successors, (749), 22 states have internal predecessors, (749), 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) [2024-12-02 10:11:26,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:11:26,107 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:11:26,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:11:26,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6667aa2-2ba3-44b4-bc9e-967cc3fa6d5e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:11:26,308 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 10:11:26,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:11:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -936467565, now seen corresponding path program 1 times [2024-12-02 10:11:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:11:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651176507] [2024-12-02 10:11:26,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:11:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:11:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:11:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:11:26,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:11:26,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651176507] [2024-12-02 10:11:26,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651176507] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:11:26,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:11:26,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:11:26,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361704048] [2024-12-02 10:11:26,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:11:26,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:11:26,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:11:26,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:11:26,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:11:26,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 84 [2024-12-02 10:11:26,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 260 transitions, 1844 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:11:26,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:11:26,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 84 [2024-12-02 10:11:26,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand