./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.4-dev-a340643-m [2024-01-27 15:34:24,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:34:24,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:34:24,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:34:24,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:34:24,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:34:24,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:34:24,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:34:24,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:34:24,514 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:34:24,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:34:24,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:34:24,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:34:24,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:34:24,516 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:34:24,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:34:24,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:34:24,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:34:24,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:34:24,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:34:24,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:34:24,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:34:24,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:34:24,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:34:24,518 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:34:24,518 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:34:24,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:34:24,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:34:24,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:34:24,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:34:24,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:34:24,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:34:24,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:34:24,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:34:24,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:34:24,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:34:24,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:34:24,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:34:24,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:34:24,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:34:24,522 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:34:24,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:34:24,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:34:24,522 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2024-01-27 15:34:24,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:34:24,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:34:24,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:34:24,785 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:34:24,785 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:34:24,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2024-01-27 15:34:25,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:34:25,963 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:34:25,964 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2024-01-27 15:34:25,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c171aba62/f852c021c3d9426cafad274f704f69e9/FLAGe4f0e71d8 [2024-01-27 15:34:25,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c171aba62/f852c021c3d9426cafad274f704f69e9 [2024-01-27 15:34:26,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:34:26,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:34:26,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:34:26,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:34:26,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:34:26,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d3d916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26, skipping insertion in model container [2024-01-27 15:34:26,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:34:26,195 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-01-27 15:34:26,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:34:26,212 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:34:26,239 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-01-27 15:34:26,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:34:26,257 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:34:26,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26 WrapperNode [2024-01-27 15:34:26,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:34:26,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:34:26,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:34:26,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:34:26,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,299 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 481 [2024-01-27 15:34:26,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:34:26,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:34:26,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:34:26,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:34:26,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,347 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 2, 2, 16, 2, 2]. 62 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 4, 1, 1]. [2024-01-27 15:34:26,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:34:26,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:34:26,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:34:26,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:34:26,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (1/1) ... [2024-01-27 15:34:26,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:34:26,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:34:26,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:34:26,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:34:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:34:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:34:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:34:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:34:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:34:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:34:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:34:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 15:34:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:34:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:34:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:34:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:34:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:34:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 15:34:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:34:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:34:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:34:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:34:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:34:26,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:34:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:34:26,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:34:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:34:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:34:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:34:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:34:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:34:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 15:34:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:34:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:34:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:34:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:34:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:34:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:34:26,462 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:34:26,582 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:34:26,584 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:34:27,005 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:34:27,005 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:34:27,400 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:34:27,401 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-01-27 15:34:27,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:34:27 BoogieIcfgContainer [2024-01-27 15:34:27,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:34:27,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:34:27,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:34:27,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:34:27,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:34:26" (1/3) ... [2024-01-27 15:34:27,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d96bc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:34:27, skipping insertion in model container [2024-01-27 15:34:27,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:26" (2/3) ... [2024-01-27 15:34:27,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d96bc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:34:27, skipping insertion in model container [2024-01-27 15:34:27,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:34:27" (3/3) ... [2024-01-27 15:34:27,410 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-01-27 15:34:27,418 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:34:27,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:34:27,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:34:27,425 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:34:27,479 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:34:27,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 87 transitions, 202 flow [2024-01-27 15:34:27,549 INFO L124 PetriNetUnfolderBase]: 24/83 cut-off events. [2024-01-27 15:34:27,549 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:34:27,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 83 events. 24/83 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 177 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2024-01-27 15:34:27,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 87 transitions, 202 flow [2024-01-27 15:34:27,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 82 transitions, 188 flow [2024-01-27 15:34:27,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:34:27,573 INFO L357 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, mHoare=true, 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;@668d2101, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:34:27,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:34:27,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:34:27,597 INFO L124 PetriNetUnfolderBase]: 24/81 cut-off events. [2024-01-27 15:34:27,597 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:34:27,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:27,597 INFO L208 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] [2024-01-27 15:34:27,598 INFO L420 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)] === [2024-01-27 15:34:27,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash 370340, now seen corresponding path program 1 times [2024-01-27 15:34:27,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:34:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322367739] [2024-01-27 15:34:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:27,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:34:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:34:27,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:34:27,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322367739] [2024-01-27 15:34:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322367739] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:27,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:34:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586520186] [2024-01-27 15:34:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:27,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:34:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:34:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:34:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:34:27,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-01-27 15:34:27,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 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) [2024-01-27 15:34:27,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:27,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-01-27 15:34:27,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:34:28,441 INFO L124 PetriNetUnfolderBase]: 4193/5313 cut-off events. [2024-01-27 15:34:28,442 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2024-01-27 15:34:28,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10558 conditions, 5313 events. 4193/5313 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20606 event pairs, 1965 based on Foata normal form. 740/4903 useless extension candidates. Maximal degree in co-relation 8964. Up to 4985 conditions per place. [2024-01-27 15:34:28,482 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 49 selfloop transitions, 0 changer transitions 0/78 dead transitions. [2024-01-27 15:34:28,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 78 transitions, 278 flow [2024-01-27 15:34:28,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:34:28,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:34:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 119 transitions. [2024-01-27 15:34:28,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6839080459770115 [2024-01-27 15:34:28,493 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 188 flow. Second operand 2 states and 119 transitions. [2024-01-27 15:34:28,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 78 transitions, 278 flow [2024-01-27 15:34:28,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 262 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:34:28,510 INFO L231 Difference]: Finished difference. Result has 64 places, 78 transitions, 164 flow [2024-01-27 15:34:28,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=64, PETRI_TRANSITIONS=78} [2024-01-27 15:34:28,515 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2024-01-27 15:34:28,516 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 78 transitions, 164 flow [2024-01-27 15:34:28,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 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) [2024-01-27 15:34:28,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:28,516 INFO L208 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] [2024-01-27 15:34:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:34:28,519 INFO L420 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)] === [2024-01-27 15:34:28,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:28,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1221352698, now seen corresponding path program 1 times [2024-01-27 15:34:28,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:34:28,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120363553] [2024-01-27 15:34:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:28,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:34:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:34:28,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:34:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120363553] [2024-01-27 15:34:28,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120363553] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:28,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:28,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:34:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42018745] [2024-01-27 15:34:28,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:28,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:34:28,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:34:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:34:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:34:28,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-01-27 15:34:28,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 78 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-01-27 15:34:28,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:28,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-01-27 15:34:28,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:34:29,574 INFO L124 PetriNetUnfolderBase]: 8487/12496 cut-off events. [2024-01-27 15:34:29,575 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-27 15:34:29,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22625 conditions, 12496 events. 8487/12496 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 74622 event pairs, 1965 based on Foata normal form. 1/9587 useless extension candidates. Maximal degree in co-relation 22622. Up to 6055 conditions per place. [2024-01-27 15:34:29,694 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 79 selfloop transitions, 7 changer transitions 1/116 dead transitions. [2024-01-27 15:34:29,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 116 transitions, 421 flow [2024-01-27 15:34:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:34:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:34:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-01-27 15:34:29,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164750957854407 [2024-01-27 15:34:29,703 INFO L175 Difference]: Start difference. First operand has 64 places, 78 transitions, 164 flow. Second operand 3 states and 187 transitions. [2024-01-27 15:34:29,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 116 transitions, 421 flow [2024-01-27 15:34:29,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 116 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:34:29,705 INFO L231 Difference]: Finished difference. Result has 67 places, 84 transitions, 211 flow [2024-01-27 15:34:29,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=67, PETRI_TRANSITIONS=84} [2024-01-27 15:34:29,706 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -4 predicate places. [2024-01-27 15:34:29,706 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 84 transitions, 211 flow [2024-01-27 15:34:29,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-01-27 15:34:29,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:29,707 INFO L208 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] [2024-01-27 15:34:29,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:34:29,707 INFO L420 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)] === [2024-01-27 15:34:29,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash 848587489, now seen corresponding path program 1 times [2024-01-27 15:34:29,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:34:29,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577526176] [2024-01-27 15:34:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:34:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:34:29,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:34:29,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577526176] [2024-01-27 15:34:29,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577526176] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:29,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:29,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:34:29,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214427793] [2024-01-27 15:34:29,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:29,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:34:29,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:34:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:34:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:34:29,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-01-27 15:34:29,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 84 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-01-27 15:34:29,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:29,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-01-27 15:34:29,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:34:31,212 INFO L124 PetriNetUnfolderBase]: 15896/22145 cut-off events. [2024-01-27 15:34:31,212 INFO L125 PetriNetUnfolderBase]: For 4367/4431 co-relation queries the response was YES. [2024-01-27 15:34:31,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46222 conditions, 22145 events. 15896/22145 cut-off events. For 4367/4431 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 129904 event pairs, 4753 based on Foata normal form. 997/18036 useless extension candidates. Maximal degree in co-relation 46217. Up to 11036 conditions per place. [2024-01-27 15:34:31,355 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 88 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-01-27 15:34:31,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 121 transitions, 492 flow [2024-01-27 15:34:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:34:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:34:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2024-01-27 15:34:31,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7088122605363985 [2024-01-27 15:34:31,357 INFO L175 Difference]: Start difference. First operand has 67 places, 84 transitions, 211 flow. Second operand 3 states and 185 transitions. [2024-01-27 15:34:31,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 121 transitions, 492 flow [2024-01-27 15:34:31,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 121 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:34:31,360 INFO L231 Difference]: Finished difference. Result has 69 places, 87 transitions, 240 flow [2024-01-27 15:34:31,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=69, PETRI_TRANSITIONS=87} [2024-01-27 15:34:31,361 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2024-01-27 15:34:31,361 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 87 transitions, 240 flow [2024-01-27 15:34:31,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-01-27 15:34:31,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:31,362 INFO L208 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] [2024-01-27 15:34:31,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:34:31,362 INFO L420 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)] === [2024-01-27 15:34:31,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:31,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1103524767, now seen corresponding path program 1 times [2024-01-27 15:34:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:34:31,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24461503] [2024-01-27 15:34:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:31,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:34:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:34:31,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:34:31,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24461503] [2024-01-27 15:34:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24461503] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:31,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:31,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:34:31,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037340795] [2024-01-27 15:34:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:31,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:34:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:34:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:34:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:34:31,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-01-27 15:34:31,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 87 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-01-27 15:34:31,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:31,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-01-27 15:34:31,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:34:34,137 INFO L124 PetriNetUnfolderBase]: 31010/47251 cut-off events. [2024-01-27 15:34:34,137 INFO L125 PetriNetUnfolderBase]: For 14870/14929 co-relation queries the response was YES. [2024-01-27 15:34:34,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99214 conditions, 47251 events. 31010/47251 cut-off events. For 14870/14929 co-relation queries the response was YES. Maximal size of possible extension queue 1718. Compared 361295 event pairs, 8888 based on Foata normal form. 784/36458 useless extension candidates. Maximal degree in co-relation 99208. Up to 19469 conditions per place. [2024-01-27 15:34:34,634 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 102 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-01-27 15:34:34,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 133 transitions, 596 flow [2024-01-27 15:34:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:34:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:34:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-01-27 15:34:34,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164750957854407 [2024-01-27 15:34:34,635 INFO L175 Difference]: Start difference. First operand has 69 places, 87 transitions, 240 flow. Second operand 3 states and 187 transitions. [2024-01-27 15:34:34,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 133 transitions, 596 flow [2024-01-27 15:34:34,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 133 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:34:34,645 INFO L231 Difference]: Finished difference. Result has 71 places, 88 transitions, 250 flow [2024-01-27 15:34:34,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=71, PETRI_TRANSITIONS=88} [2024-01-27 15:34:34,647 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places. [2024-01-27 15:34:34,647 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 88 transitions, 250 flow [2024-01-27 15:34:34,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-01-27 15:34:34,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:34,648 INFO L208 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] [2024-01-27 15:34:34,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:34:34,648 INFO L420 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)] === [2024-01-27 15:34:34,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1174662517, now seen corresponding path program 1 times [2024-01-27 15:34:34,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:34:34,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122219685] [2024-01-27 15:34:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:34,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:34:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:34:34,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:34:34,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122219685] [2024-01-27 15:34:34,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122219685] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:34,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:34,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:34:34,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641524032] [2024-01-27 15:34:34,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:34,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:34:34,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:34:34,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:34:34,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:34:34,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-01-27 15:34:34,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 88 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-01-27 15:34:34,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:34,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-01-27 15:34:34,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:34:40,169 INFO L124 PetriNetUnfolderBase]: 59950/93575 cut-off events. [2024-01-27 15:34:40,170 INFO L125 PetriNetUnfolderBase]: For 33947/34065 co-relation queries the response was YES. [2024-01-27 15:34:40,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194584 conditions, 93575 events. 59950/93575 cut-off events. For 33947/34065 co-relation queries the response was YES. Maximal size of possible extension queue 3186. Compared 802447 event pairs, 17387 based on Foata normal form. 1488/71710 useless extension candidates. Maximal degree in co-relation 194577. Up to 38001 conditions per place. [2024-01-27 15:34:40,924 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 104 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2024-01-27 15:34:40,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 135 transitions, 618 flow [2024-01-27 15:34:40,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:34:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:34:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-01-27 15:34:40,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164750957854407 [2024-01-27 15:34:40,926 INFO L175 Difference]: Start difference. First operand has 71 places, 88 transitions, 250 flow. Second operand 3 states and 187 transitions. [2024-01-27 15:34:40,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 135 transitions, 618 flow [2024-01-27 15:34:40,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 135 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:34:40,943 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 262 flow [2024-01-27 15:34:40,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2024-01-27 15:34:40,943 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2024-01-27 15:34:40,944 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 262 flow [2024-01-27 15:34:40,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-01-27 15:34:40,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:40,944 INFO L208 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] [2024-01-27 15:34:40,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:34:40,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:34:40,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash 858295422, now seen corresponding path program 1 times [2024-01-27 15:34:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:34:40,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721673028] [2024-01-27 15:34:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:40,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:34:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:34:40,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:34:41,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721673028] [2024-01-27 15:34:41,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721673028] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:41,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:41,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:34:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550783997] [2024-01-27 15:34:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:41,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:34:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:34:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:34:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:34:41,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-01-27 15:34:41,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-01-27 15:34:41,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:41,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-01-27 15:34:41,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:34:49,640 INFO L124 PetriNetUnfolderBase]: 104025/143497 cut-off events. [2024-01-27 15:34:49,640 INFO L125 PetriNetUnfolderBase]: For 65879/65951 co-relation queries the response was YES. [2024-01-27 15:34:50,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326329 conditions, 143497 events. 104025/143497 cut-off events. For 65879/65951 co-relation queries the response was YES. Maximal size of possible extension queue 4420. Compared 1037183 event pairs, 43832 based on Foata normal form. 0/112415 useless extension candidates. Maximal degree in co-relation 326321. Up to 78846 conditions per place. [2024-01-27 15:34:50,899 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 96 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2024-01-27 15:34:50,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 603 flow [2024-01-27 15:34:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:34:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:34:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-01-27 15:34:50,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6704980842911877 [2024-01-27 15:34:50,900 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 262 flow. Second operand 3 states and 175 transitions. [2024-01-27 15:34:50,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 603 flow [2024-01-27 15:34:50,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 128 transitions, 600 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:34:50,915 INFO L231 Difference]: Finished difference. Result has 76 places, 90 transitions, 290 flow [2024-01-27 15:34:50,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=76, PETRI_TRANSITIONS=90} [2024-01-27 15:34:50,915 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2024-01-27 15:34:50,916 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 90 transitions, 290 flow [2024-01-27 15:34:50,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-01-27 15:34:50,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:50,916 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:34:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:34:50,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:34:50,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash -763633218, now seen corresponding path program 1 times [2024-01-27 15:34:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:34:50,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073200186] [2024-01-27 15:34:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:50,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:34:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:34:51,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:34:51,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073200186] [2024-01-27 15:34:51,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073200186] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:51,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:51,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:34:51,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112832293] [2024-01-27 15:34:51,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:51,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:34:51,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:34:51,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:34:51,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:34:51,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2024-01-27 15:34:51,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 90 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2024-01-27 15:34:51,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:51,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2024-01-27 15:34:51,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand