./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/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_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX --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 0.2.5-dev-a016563 [2024-11-08 18:28:11,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:28:11,423 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:28:11,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:28:11,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:28:11,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:28:11,478 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:28:11,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:28:11,479 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:28:11,479 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:28:11,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:28:11,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:28:11,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:28:11,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:28:11,485 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:28:11,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:28:11,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:28:11,486 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:28:11,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:28:11,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:28:11,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:28:11,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:28:11,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:28:11,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:28:11,492 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:28:11,492 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:28:11,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:28:11,493 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:28:11,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:28:11,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:28:11,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:28:11,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:28:11,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:28:11,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:28:11,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:28:11,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:28:11,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:28:11,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:28:11,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:28:11,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:28:11,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:28:11,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:28:11,500 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_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2024-11-08 18:28:11,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:28:11,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:28:11,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:28:11,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:28:11,882 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:28:11,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c Unable to find full path for "g++" [2024-11-08 18:28:13,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:28:14,134 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:28:14,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-11-08 18:28:14,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/data/d026eabaf/066e251d8dae4bc5a9a0666e807106f3/FLAG1b1c92f9c [2024-11-08 18:28:14,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/data/d026eabaf/066e251d8dae4bc5a9a0666e807106f3 [2024-11-08 18:28:14,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:28:14,177 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:28:14,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:28:14,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:28:14,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:28:14,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519f5d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14, skipping insertion in model container [2024-11-08 18:28:14,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,223 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:28:14,506 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_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-11-08 18:28:14,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:28:14,527 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:28:14,573 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_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-11-08 18:28:14,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:28:14,593 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:28:14,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14 WrapperNode [2024-11-08 18:28:14,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:28:14,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:28:14,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:28:14,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:28:14,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,664 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 453 [2024-11-08 18:28:14,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:28:14,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:28:14,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:28:14,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:28:14,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,723 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]. [2024-11-08 18:28:14,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:28:14,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:28:14,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:28:14,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:28:14,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (1/1) ... [2024-11-08 18:28:14,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:28:14,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:28:14,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:28:14,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc4314d-8632-42c0-bcd2-5e715e8e4e88/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:28:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:28:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:28:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:28:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:28:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:28:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 18:28:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 18:28:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 18:28:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 18:28:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:28:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:28:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:28:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:28:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:28:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:28:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:28:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:28:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:28:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:28:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:28:14,836 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:28:14,967 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:28:14,970 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:28:15,777 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:28:15,778 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:28:16,361 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:28:16,361 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-08 18:28:16,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:28:16 BoogieIcfgContainer [2024-11-08 18:28:16,362 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:28:16,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:28:16,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:28:16,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:28:16,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:28:14" (1/3) ... [2024-11-08 18:28:16,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2790c77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:28:16, skipping insertion in model container [2024-11-08 18:28:16,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:14" (2/3) ... [2024-11-08 18:28:16,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2790c77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:28:16, skipping insertion in model container [2024-11-08 18:28:16,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:28:16" (3/3) ... [2024-11-08 18:28:16,373 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-11-08 18:28:16,392 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:28:16,392 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:28:16,393 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:28:16,475 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 18:28:16,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 96 transitions, 220 flow [2024-11-08 18:28:16,579 INFO L124 PetriNetUnfolderBase]: 28/92 cut-off events. [2024-11-08 18:28:16,580 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 18:28:16,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 92 events. 28/92 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 189 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 78. Up to 8 conditions per place. [2024-11-08 18:28:16,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 96 transitions, 220 flow [2024-11-08 18:28:16,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 91 transitions, 206 flow [2024-11-08 18:28:16,602 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:28:16,608 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;@6f441012, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:28:16,609 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 18:28:16,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:28:16,645 INFO L124 PetriNetUnfolderBase]: 28/90 cut-off events. [2024-11-08 18:28:16,645 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 18:28:16,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:16,646 INFO L204 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] [2024-11-08 18:28:16,646 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)] === [2024-11-08 18:28:16,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash -750317642, now seen corresponding path program 1 times [2024-11-08 18:28:16,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:16,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629785158] [2024-11-08 18:28:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:16,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:17,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629785158] [2024-11-08 18:28:17,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629785158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:28:17,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:28:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:28:17,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952215228] [2024-11-08 18:28:17,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:17,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:28:17,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:17,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:28:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:28:17,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2024-11-08 18:28:17,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:17,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:17,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2024-11-08 18:28:17,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:28:18,688 INFO L124 PetriNetUnfolderBase]: 8493/11187 cut-off events. [2024-11-08 18:28:18,690 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2024-11-08 18:28:18,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21559 conditions, 11187 events. 8493/11187 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 47954 event pairs, 4408 based on Foata normal form. 0/9005 useless extension candidates. Maximal degree in co-relation 20016. Up to 9899 conditions per place. [2024-11-08 18:28:18,798 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 50 selfloop transitions, 0 changer transitions 0/87 dead transitions. [2024-11-08 18:28:18,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 298 flow [2024-11-08 18:28:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:28:18,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 18:28:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 136 transitions. [2024-11-08 18:28:18,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-11-08 18:28:18,815 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 206 flow. Second operand 2 states and 136 transitions. [2024-11-08 18:28:18,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 298 flow [2024-11-08 18:28:18,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 282 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 18:28:18,848 INFO L231 Difference]: Finished difference. Result has 69 places, 87 transitions, 182 flow [2024-11-08 18:28:18,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=69, PETRI_TRANSITIONS=87} [2024-11-08 18:28:18,856 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -7 predicate places. [2024-11-08 18:28:18,856 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 87 transitions, 182 flow [2024-11-08 18:28:18,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:18,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:18,857 INFO L204 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, 1, 1, 1, 1] [2024-11-08 18:28:18,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:28:18,857 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)] === [2024-11-08 18:28:18,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2130637150, now seen corresponding path program 1 times [2024-11-08 18:28:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:18,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471473686] [2024-11-08 18:28:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:19,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:19,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471473686] [2024-11-08 18:28:19,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471473686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:28:19,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:28:19,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:28:19,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427610720] [2024-11-08 18:28:19,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:19,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:28:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:28:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:28:19,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2024-11-08 18:28:19,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 87 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:19,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:19,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2024-11-08 18:28:19,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:28:22,087 INFO L124 PetriNetUnfolderBase]: 17126/24922 cut-off events. [2024-11-08 18:28:22,088 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-11-08 18:28:22,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45021 conditions, 24922 events. 17126/24922 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 150777 event pairs, 4408 based on Foata normal form. 1/19544 useless extension candidates. Maximal degree in co-relation 45018. Up to 11771 conditions per place. [2024-11-08 18:28:22,373 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 81 selfloop transitions, 7 changer transitions 1/126 dead transitions. [2024-11-08 18:28:22,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 126 transitions, 445 flow [2024-11-08 18:28:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:28:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:28:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-11-08 18:28:22,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-08 18:28:22,379 INFO L175 Difference]: Start difference. First operand has 69 places, 87 transitions, 182 flow. Second operand 3 states and 213 transitions. [2024-11-08 18:28:22,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 126 transitions, 445 flow [2024-11-08 18:28:22,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 445 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:28:22,383 INFO L231 Difference]: Finished difference. Result has 72 places, 93 transitions, 229 flow [2024-11-08 18:28:22,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=72, PETRI_TRANSITIONS=93} [2024-11-08 18:28:22,385 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2024-11-08 18:28:22,385 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 93 transitions, 229 flow [2024-11-08 18:28:22,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:22,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:22,386 INFO L204 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, 1, 1, 1] [2024-11-08 18:28:22,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:28:22,387 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)] === [2024-11-08 18:28:22,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:22,391 INFO L85 PathProgramCache]: Analyzing trace with hash -118750045, now seen corresponding path program 1 times [2024-11-08 18:28:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:22,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112832266] [2024-11-08 18:28:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:22,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:22,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:22,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112832266] [2024-11-08 18:28:22,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112832266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:28:22,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:28:22,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:28:22,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247801268] [2024-11-08 18:28:22,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:22,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:28:22,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:22,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:28:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:28:22,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2024-11-08 18:28:22,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:22,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:22,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2024-11-08 18:28:22,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:28:26,858 INFO L124 PetriNetUnfolderBase]: 33283/48954 cut-off events. [2024-11-08 18:28:26,858 INFO L125 PetriNetUnfolderBase]: For 7678/7678 co-relation queries the response was YES. [2024-11-08 18:28:26,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98785 conditions, 48954 events. 33283/48954 cut-off events. For 7678/7678 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 326799 event pairs, 9127 based on Foata normal form. 610/38994 useless extension candidates. Maximal degree in co-relation 98780. Up to 20400 conditions per place. [2024-11-08 18:28:27,229 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 98 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2024-11-08 18:28:27,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 551 flow [2024-11-08 18:28:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:28:27,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:28:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-11-08 18:28:27,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-08 18:28:27,235 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 229 flow. Second operand 3 states and 213 transitions. [2024-11-08 18:28:27,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 551 flow [2024-11-08 18:28:27,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 137 transitions, 539 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:28:27,429 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 236 flow [2024-11-08 18:28:27,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2024-11-08 18:28:27,432 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -2 predicate places. [2024-11-08 18:28:27,433 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 236 flow [2024-11-08 18:28:27,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:27,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:27,437 INFO L204 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, 1, 1, 1] [2024-11-08 18:28:27,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:28:27,438 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)] === [2024-11-08 18:28:27,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1898931001, now seen corresponding path program 1 times [2024-11-08 18:28:27,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:27,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926958455] [2024-11-08 18:28:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:27,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:27,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926958455] [2024-11-08 18:28:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926958455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:28:27,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:28:27,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:28:27,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921557992] [2024-11-08 18:28:27,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:27,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:28:27,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:27,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:28:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:28:27,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2024-11-08 18:28:27,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:27,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:27,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2024-11-08 18:28:27,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:28:34,781 INFO L124 PetriNetUnfolderBase]: 62847/84510 cut-off events. [2024-11-08 18:28:34,781 INFO L125 PetriNetUnfolderBase]: For 19662/19872 co-relation queries the response was YES. [2024-11-08 18:28:34,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174625 conditions, 84510 events. 62847/84510 cut-off events. For 19662/19872 co-relation queries the response was YES. Maximal size of possible extension queue 2449. Compared 507073 event pairs, 19881 based on Foata normal form. 3612/72030 useless extension candidates. Maximal degree in co-relation 174619. Up to 42555 conditions per place. [2024-11-08 18:28:35,259 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 92 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-11-08 18:28:35,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 133 transitions, 535 flow [2024-11-08 18:28:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:28:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:28:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-11-08 18:28:35,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7326388888888888 [2024-11-08 18:28:35,261 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 236 flow. Second operand 3 states and 211 transitions. [2024-11-08 18:28:35,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 133 transitions, 535 flow [2024-11-08 18:28:35,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 133 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:28:35,271 INFO L231 Difference]: Finished difference. Result has 76 places, 97 transitions, 270 flow [2024-11-08 18:28:35,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=76, PETRI_TRANSITIONS=97} [2024-11-08 18:28:35,273 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2024-11-08 18:28:35,274 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 97 transitions, 270 flow [2024-11-08 18:28:35,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:35,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:35,275 INFO L204 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, 1, 1, 1] [2024-11-08 18:28:35,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:28:35,275 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)] === [2024-11-08 18:28:35,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1256802809, now seen corresponding path program 1 times [2024-11-08 18:28:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:35,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840782593] [2024-11-08 18:28:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:35,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:35,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840782593] [2024-11-08 18:28:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840782593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:28:35,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:28:35,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:28:35,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670734218] [2024-11-08 18:28:35,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:35,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:28:35,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:35,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:28:35,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:28:35,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2024-11-08 18:28:35,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 97 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:28:35,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:35,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2024-11-08 18:28:35,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand