./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU --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 67d3e2c6779f32015be5c9fe966e6a739e1c762dcde7f287ad383839eb490e84 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:02:21,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:02:21,306 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:02:21,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:02:21,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:02:21,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:02:21,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:02:21,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:02:21,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:02:21,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:02:21,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:02:21,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:02:21,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:02:21,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:02:21,369 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:02:21,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:02:21,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:02:21,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:02:21,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:02:21,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:02:21,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:02:21,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:02:21,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:02:21,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:02:21,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:02:21,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:02:21,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:02:21,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:02:21,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:02:21,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:02:21,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:02:21,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:02:21,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:02:21,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:02:21,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:02:21,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:02:21,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:02:21,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:02:21,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:02:21,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:02:21,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:02:21,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:02:21,384 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_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d3e2c6779f32015be5c9fe966e6a739e1c762dcde7f287ad383839eb490e84 [2024-10-31 22:02:21,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:02:21,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:02:21,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:02:21,723 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:02:21,723 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:02:21,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i Unable to find full path for "g++" [2024-10-31 22:02:23,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:02:24,053 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:02:24,054 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i [2024-10-31 22:02:24,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/data/99c970179/d8e1f472de51464aaa26137e7a3a48ce/FLAGed8f8b496 [2024-10-31 22:02:24,375 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/data/99c970179/d8e1f472de51464aaa26137e7a3a48ce [2024-10-31 22:02:24,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:02:24,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:02:24,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:02:24,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:02:24,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:02:24,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:02:24" (1/1) ... [2024-10-31 22:02:24,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e07d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:24, skipping insertion in model container [2024-10-31 22:02:24,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:02:24" (1/1) ... [2024-10-31 22:02:24,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:02:24,658 WARN L251 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_770bec17-4f67-4372-ae54-3a94ddfc94aa/sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i[995,1008] [2024-10-31 22:02:25,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:02:25,041 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:02:25,055 WARN L251 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_770bec17-4f67-4372-ae54-3a94ddfc94aa/sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i[995,1008] [2024-10-31 22:02:25,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:02:25,188 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:02:25,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25 WrapperNode [2024-10-31 22:02:25,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:02:25,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:02:25,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:02:25,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:02:25,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,268 INFO L138 Inliner]: procedures = 175, calls = 72, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 163 [2024-10-31 22:02:25,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:02:25,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:02:25,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:02:25,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:02:25,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,332 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-10-31 22:02:25,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:02:25,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:02:25,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:02:25,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:02:25,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (1/1) ... [2024-10-31 22:02:25,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:02:25,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:25,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:02:25,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770bec17-4f67-4372-ae54-3a94ddfc94aa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:02:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:02:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:02:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:02:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:02:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:02:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:02:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:02:25,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:02:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:02:25,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:02:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:02:25,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:02:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:02:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:02:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:02:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:02:25,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:02:25,441 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:02:25,625 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:02:25,627 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:02:26,398 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:02:26,398 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:02:26,962 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:02:26,962 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:02:26,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:26 BoogieIcfgContainer [2024-10-31 22:02:26,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:02:26,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:02:26,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:02:26,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:02:26,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:02:24" (1/3) ... [2024-10-31 22:02:26,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:02:26, skipping insertion in model container [2024-10-31 22:02:26,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:25" (2/3) ... [2024-10-31 22:02:26,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:02:26, skipping insertion in model container [2024-10-31 22:02:26,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:26" (3/3) ... [2024-10-31 22:02:26,972 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_power.oepc.i [2024-10-31 22:02:26,990 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:02:26,991 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:02:26,991 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:02:27,082 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:02:27,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-10-31 22:02:27,178 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-10-31 22:02:27,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:02:27,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-10-31 22:02:27,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-10-31 22:02:27,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-10-31 22:02:27,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:27,214 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;@57e48ed0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:27,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:02:27,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:02:27,240 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-10-31 22:02:27,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:02:27,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:27,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:27,242 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 1 more)] === [2024-10-31 22:02:27,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:27,248 INFO L85 PathProgramCache]: Analyzing trace with hash 752291177, now seen corresponding path program 1 times [2024-10-31 22:02:27,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:27,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788915700] [2024-10-31 22:02:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:27,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788915700] [2024-10-31 22:02:28,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788915700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:28,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:28,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:28,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838965161] [2024-10-31 22:02:28,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:28,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:02:28,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:02:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:02:28,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-10-31 22:02:28,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:28,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:28,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-10-31 22:02:28,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:29,514 INFO L124 PetriNetUnfolderBase]: 1041/1721 cut-off events. [2024-10-31 22:02:29,514 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:02:29,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3334 conditions, 1721 events. 1041/1721 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10384 event pairs, 203 based on Foata normal form. 60/1765 useless extension candidates. Maximal degree in co-relation 3323. Up to 1065 conditions per place. [2024-10-31 22:02:29,547 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 27 selfloop transitions, 2 changer transitions 31/71 dead transitions. [2024-10-31 22:02:29,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 271 flow [2024-10-31 22:02:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:02:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:02:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-10-31 22:02:29,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-10-31 22:02:29,564 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 160 transitions. [2024-10-31 22:02:29,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 271 flow [2024-10-31 22:02:29,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:02:29,572 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 86 flow [2024-10-31 22:02:29,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=86, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2024-10-31 22:02:29,578 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-10-31 22:02:29,579 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 86 flow [2024-10-31 22:02:29,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:29,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:29,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:29,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:02:29,581 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 1 more)] === [2024-10-31 22:02:29,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:29,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1727000790, now seen corresponding path program 1 times [2024-10-31 22:02:29,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:29,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16672813] [2024-10-31 22:02:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:29,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:31,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:31,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16672813] [2024-10-31 22:02:31,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16672813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:31,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:31,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:02:31,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907309809] [2024-10-31 22:02:31,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:31,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:02:31,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:31,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:02:31,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:02:31,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-10-31 22:02:31,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:31,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:31,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-10-31 22:02:31,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:32,349 INFO L124 PetriNetUnfolderBase]: 1208/1996 cut-off events. [2024-10-31 22:02:32,350 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2024-10-31 22:02:32,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 1996 events. 1208/1996 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 12324 event pairs, 184 based on Foata normal form. 48/2034 useless extension candidates. Maximal degree in co-relation 4269. Up to 778 conditions per place. [2024-10-31 22:02:32,366 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 32 selfloop transitions, 3 changer transitions 34/80 dead transitions. [2024-10-31 22:02:32,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 337 flow [2024-10-31 22:02:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:02:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:02:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-10-31 22:02:32,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6019736842105263 [2024-10-31 22:02:32,371 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 86 flow. Second operand 8 states and 183 transitions. [2024-10-31 22:02:32,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 337 flow [2024-10-31 22:02:32,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 80 transitions, 315 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-31 22:02:32,391 INFO L231 Difference]: Finished difference. Result has 53 places, 32 transitions, 102 flow [2024-10-31 22:02:32,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=102, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2024-10-31 22:02:32,392 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-10-31 22:02:32,394 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 102 flow [2024-10-31 22:02:32,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:32,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:32,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:32,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:02:32,395 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 1 more)] === [2024-10-31 22:02:32,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash -890150825, now seen corresponding path program 1 times [2024-10-31 22:02:32,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:32,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951186032] [2024-10-31 22:02:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:32,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:32,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951186032] [2024-10-31 22:02:32,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951186032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:32,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:32,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:32,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777684690] [2024-10-31 22:02:32,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:32,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:02:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:32,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:02:32,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:02:32,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-10-31 22:02:32,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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) [2024-10-31 22:02:32,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:32,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-10-31 22:02:32,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:33,651 INFO L124 PetriNetUnfolderBase]: 659/1336 cut-off events. [2024-10-31 22:02:33,652 INFO L125 PetriNetUnfolderBase]: For 828/828 co-relation queries the response was YES. [2024-10-31 22:02:33,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 1336 events. 659/1336 cut-off events. For 828/828 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8130 event pairs, 119 based on Foata normal form. 36/1343 useless extension candidates. Maximal degree in co-relation 3024. Up to 671 conditions per place. [2024-10-31 22:02:33,662 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 33 selfloop transitions, 2 changer transitions 27/73 dead transitions. [2024-10-31 22:02:33,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 364 flow [2024-10-31 22:02:33,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:02:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:02:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-10-31 22:02:33,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6090225563909775 [2024-10-31 22:02:33,665 INFO L175 Difference]: Start difference. First operand has 53 places, 32 transitions, 102 flow. Second operand 7 states and 162 transitions. [2024-10-31 22:02:33,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 364 flow [2024-10-31 22:02:33,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 73 transitions, 342 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-31 22:02:33,669 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 106 flow [2024-10-31 22:02:33,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2024-10-31 22:02:33,670 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-10-31 22:02:33,670 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 106 flow [2024-10-31 22:02:33,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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) [2024-10-31 22:02:33,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:33,671 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] [2024-10-31 22:02:33,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:02:33,671 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 1 more)] === [2024-10-31 22:02:33,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash -102526222, now seen corresponding path program 1 times [2024-10-31 22:02:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573116335] [2024-10-31 22:02:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:33,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:37,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:37,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573116335] [2024-10-31 22:02:37,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573116335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:37,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:37,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:02:37,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537028893] [2024-10-31 22:02:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:37,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:02:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:37,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:02:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:02:37,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-31 22:02:37,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 106 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:37,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:37,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-31 22:02:37,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:39,252 INFO L124 PetriNetUnfolderBase]: 1349/2463 cut-off events. [2024-10-31 22:02:39,253 INFO L125 PetriNetUnfolderBase]: For 2236/2236 co-relation queries the response was YES. [2024-10-31 22:02:39,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 2463 events. 1349/2463 cut-off events. For 2236/2236 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16308 event pairs, 316 based on Foata normal form. 60/2494 useless extension candidates. Maximal degree in co-relation 6048. Up to 959 conditions per place. [2024-10-31 22:02:39,271 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 45 selfloop transitions, 7 changer transitions 38/99 dead transitions. [2024-10-31 22:02:39,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 526 flow [2024-10-31 22:02:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:02:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:02:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-10-31 22:02:39,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5382775119617225 [2024-10-31 22:02:39,275 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 106 flow. Second operand 11 states and 225 transitions. [2024-10-31 22:02:39,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 526 flow [2024-10-31 22:02:39,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 99 transitions, 490 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-10-31 22:02:39,290 INFO L231 Difference]: Finished difference. Result has 63 places, 37 transitions, 165 flow [2024-10-31 22:02:39,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=165, PETRI_PLACES=63, PETRI_TRANSITIONS=37} [2024-10-31 22:02:39,292 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-10-31 22:02:39,292 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 37 transitions, 165 flow [2024-10-31 22:02:39,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:39,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:39,293 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] [2024-10-31 22:02:39,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:02:39,293 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 1 more)] === [2024-10-31 22:02:39,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1133092171, now seen corresponding path program 1 times [2024-10-31 22:02:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979848908] [2024-10-31 22:02:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:39,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:41,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:41,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979848908] [2024-10-31 22:02:41,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979848908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:41,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:41,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:02:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915545704] [2024-10-31 22:02:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:41,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:02:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:02:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:02:41,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-31 22:02:41,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 37 transitions, 165 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:41,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:41,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-31 22:02:41,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:42,502 INFO L124 PetriNetUnfolderBase]: 1394/2471 cut-off events. [2024-10-31 22:02:42,502 INFO L125 PetriNetUnfolderBase]: For 5653/5653 co-relation queries the response was YES. [2024-10-31 22:02:42,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7778 conditions, 2471 events. 1394/2471 cut-off events. For 5653/5653 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15864 event pairs, 224 based on Foata normal form. 40/2479 useless extension candidates. Maximal degree in co-relation 7755. Up to 896 conditions per place. [2024-10-31 22:02:42,525 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 55 selfloop transitions, 20 changer transitions 32/116 dead transitions. [2024-10-31 22:02:42,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 116 transitions, 741 flow [2024-10-31 22:02:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:02:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:02:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 261 transitions. [2024-10-31 22:02:42,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52834008097166 [2024-10-31 22:02:42,527 INFO L175 Difference]: Start difference. First operand has 63 places, 37 transitions, 165 flow. Second operand 13 states and 261 transitions. [2024-10-31 22:02:42,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 116 transitions, 741 flow [2024-10-31 22:02:42,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 116 transitions, 694 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-10-31 22:02:42,546 INFO L231 Difference]: Finished difference. Result has 73 places, 52 transitions, 325 flow [2024-10-31 22:02:42,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=325, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2024-10-31 22:02:42,547 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-10-31 22:02:42,547 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 325 flow [2024-10-31 22:02:42,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:42,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:42,548 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] [2024-10-31 22:02:42,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:02:42,549 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 1 more)] === [2024-10-31 22:02:42,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:42,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1554353939, now seen corresponding path program 2 times [2024-10-31 22:02:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:42,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953383679] [2024-10-31 22:02:42,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:42,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:45,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953383679] [2024-10-31 22:02:45,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953383679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:45,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:45,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:02:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357977431] [2024-10-31 22:02:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:45,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:02:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:02:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:02:45,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-31 22:02:45,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 52 transitions, 325 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:45,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:45,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-31 22:02:45,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:46,683 INFO L124 PetriNetUnfolderBase]: 1419/2479 cut-off events. [2024-10-31 22:02:46,683 INFO L125 PetriNetUnfolderBase]: For 9379/9379 co-relation queries the response was YES. [2024-10-31 22:02:46,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9466 conditions, 2479 events. 1419/2479 cut-off events. For 9379/9379 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15612 event pairs, 319 based on Foata normal form. 40/2493 useless extension candidates. Maximal degree in co-relation 9437. Up to 1090 conditions per place. [2024-10-31 22:02:46,710 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 50 selfloop transitions, 18 changer transitions 32/109 dead transitions. [2024-10-31 22:02:46,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 109 transitions, 882 flow [2024-10-31 22:02:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:02:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:02:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-10-31 22:02:46,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5191387559808612 [2024-10-31 22:02:46,712 INFO L175 Difference]: Start difference. First operand has 73 places, 52 transitions, 325 flow. Second operand 11 states and 217 transitions. [2024-10-31 22:02:46,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 109 transitions, 882 flow [2024-10-31 22:02:46,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 109 transitions, 759 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-10-31 22:02:46,754 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 397 flow [2024-10-31 22:02:46,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=397, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-10-31 22:02:46,755 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-10-31 22:02:46,755 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 397 flow [2024-10-31 22:02:46,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:46,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:46,756 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] [2024-10-31 22:02:46,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:02:46,757 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 1 more)] === [2024-10-31 22:02:46,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1152919514, now seen corresponding path program 1 times [2024-10-31 22:02:46,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:46,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943684056] [2024-10-31 22:02:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:46,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:47,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943684056] [2024-10-31 22:02:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943684056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:47,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:47,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:02:47,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610360463] [2024-10-31 22:02:47,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:47,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:02:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:47,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:02:47,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:02:47,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-31 22:02:47,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:47,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:47,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-31 22:02:47,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:48,121 INFO L124 PetriNetUnfolderBase]: 1360/2448 cut-off events. [2024-10-31 22:02:48,121 INFO L125 PetriNetUnfolderBase]: For 7618/7626 co-relation queries the response was YES. [2024-10-31 22:02:48,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9046 conditions, 2448 events. 1360/2448 cut-off events. For 7618/7626 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15612 event pairs, 500 based on Foata normal form. 24/2467 useless extension candidates. Maximal degree in co-relation 9017. Up to 1256 conditions per place. [2024-10-31 22:02:48,147 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 51 selfloop transitions, 3 changer transitions 23/86 dead transitions. [2024-10-31 22:02:48,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 728 flow [2024-10-31 22:02:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:02:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:02:48,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-31 22:02:48,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2024-10-31 22:02:48,150 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 397 flow. Second operand 5 states and 116 transitions. [2024-10-31 22:02:48,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 728 flow [2024-10-31 22:02:48,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 664 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-10-31 22:02:48,187 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 312 flow [2024-10-31 22:02:48,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-10-31 22:02:48,188 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-10-31 22:02:48,188 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 312 flow [2024-10-31 22:02:48,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:48,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:48,189 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] [2024-10-31 22:02:48,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:02:48,189 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 1 more)] === [2024-10-31 22:02:48,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:48,190 INFO L85 PathProgramCache]: Analyzing trace with hash 194237180, now seen corresponding path program 1 times [2024-10-31 22:02:48,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:48,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383773488] [2024-10-31 22:02:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:48,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:48,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:48,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383773488] [2024-10-31 22:02:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383773488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:48,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:48,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:02:48,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580029540] [2024-10-31 22:02:48,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:48,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:02:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:02:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:02:48,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-31 22:02:48,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:48,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:48,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-31 22:02:48,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand