./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd --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 cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:11:11,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:11:11,492 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:11:11,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:11:11,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:11:11,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:11:11,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:11:11,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:11:11,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:11:11,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:11:11,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:11:11,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:11:11,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:11:11,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:11:11,556 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:11:11,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:11:11,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:11:11,558 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:11:11,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:11:11,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:11:11,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:11:11,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:11:11,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:11:11,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:11:11,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:11:11,560 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:11:11,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:11:11,560 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:11:11,561 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:11:11,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:11:11,561 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:11:11,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:11:11,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:11:11,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:11:11,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:11:11,562 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:11:11,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:11:11,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:11:11,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:11:11,563 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:11:11,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:11:11,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:11:11,564 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd 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 -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2024-11-13 15:11:11,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:11:11,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:11:11,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:11:11,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:11:11,938 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:11:11,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c Unable to find full path for "g++" [2024-11-13 15:11:13,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:11:14,238 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:11:14,257 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-11-13 15:11:14,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/data/5798637b0/c8d4ed60f55449e78a91600463d85e4a/FLAGa89df60d8 [2024-11-13 15:11:14,320 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/data/5798637b0/c8d4ed60f55449e78a91600463d85e4a [2024-11-13 15:11:14,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:11:14,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:11:14,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:11:14,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:11:14,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:11:14,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f5ff49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14, skipping insertion in model container [2024-11-13 15:11:14,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:11:14,645 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2572,2585] [2024-11-13 15:11:14,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:11:14,686 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:11:14,716 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2572,2585] [2024-11-13 15:11:14,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:11:14,743 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:11:14,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14 WrapperNode [2024-11-13 15:11:14,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:11:14,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:11:14,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:11:14,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:11:14,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,810 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 212 [2024-11-13 15:11:14,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:11:14,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:11:14,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:11:14,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:11:14,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,855 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 15:11:14,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:11:14,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:11:14,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:11:14,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:11:14,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (1/1) ... [2024-11-13 15:11:14,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:11:14,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:11:14,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:11:14,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:11:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:11:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:11:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:11:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:11:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:11:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 15:11:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 15:11:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:11:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:11:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:11:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:11:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:11:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:11:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:11:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:11:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:11:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:11:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:11:14,962 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:11:15,133 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:11:15,136 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:11:15,801 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:11:15,801 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:11:16,316 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:11:16,316 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 15:11:16,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:11:16 BoogieIcfgContainer [2024-11-13 15:11:16,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:11:16,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:11:16,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:11:16,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:11:16,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:11:14" (1/3) ... [2024-11-13 15:11:16,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341a7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:11:16, skipping insertion in model container [2024-11-13 15:11:16,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:11:14" (2/3) ... [2024-11-13 15:11:16,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341a7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:11:16, skipping insertion in model container [2024-11-13 15:11:16,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:11:16" (3/3) ... [2024-11-13 15:11:16,331 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2024-11-13 15:11:16,357 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:11:16,359 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-mts.wvr.c that has 4 procedures, 26 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 15:11:16,359 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:11:16,449 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 15:11:16,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 79 flow [2024-11-13 15:11:16,545 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-13 15:11:16,549 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:11:16,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 26 events. 4/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-13 15:11:16,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 29 transitions, 79 flow [2024-11-13 15:11:16,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 25 transitions, 68 flow [2024-11-13 15:11:16,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:11:16,599 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;@5e0ea1d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:11:16,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 15:11:16,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:11:16,618 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-13 15:11:16,618 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:11:16,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:11:16,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:11:16,621 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)] === [2024-11-13 15:11:16,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:11:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1723561210, now seen corresponding path program 1 times [2024-11-13 15:11:16,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:11:16,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645428777] [2024-11-13 15:11:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:16,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:11:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:11:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645428777] [2024-11-13 15:11:17,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645428777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:11:17,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:11:17,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:11:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524222415] [2024-11-13 15:11:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:11:17,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:11:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:17,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:11:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:11:17,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-13 15:11:17,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:17,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:17,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-13 15:11:17,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:11:18,308 INFO L124 PetriNetUnfolderBase]: 439/661 cut-off events. [2024-11-13 15:11:18,308 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-13 15:11:18,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 661 events. 439/661 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2305 event pairs, 124 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 1176. Up to 423 conditions per place. [2024-11-13 15:11:18,319 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 35 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2024-11-13 15:11:18,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 197 flow [2024-11-13 15:11:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:11:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:11:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-11-13 15:11:18,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2024-11-13 15:11:18,338 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 68 flow. Second operand 3 states and 56 transitions. [2024-11-13 15:11:18,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 197 flow [2024-11-13 15:11:18,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:11:18,351 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 82 flow [2024-11-13 15:11:18,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2024-11-13 15:11:18,359 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-13 15:11:18,359 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 82 flow [2024-11-13 15:11:18,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:18,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:11:18,360 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] [2024-11-13 15:11:18,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:11:18,361 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)] === [2024-11-13 15:11:18,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:11:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash 148723104, now seen corresponding path program 1 times [2024-11-13 15:11:18,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:11:18,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489015821] [2024-11-13 15:11:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:11:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:11:18,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:11:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489015821] [2024-11-13 15:11:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489015821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:11:18,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:11:18,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:11:18,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686405689] [2024-11-13 15:11:18,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:11:18,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:11:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:11:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:11:18,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-13 15:11:18,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:18,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:18,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-13 15:11:18,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:11:18,808 INFO L124 PetriNetUnfolderBase]: 439/678 cut-off events. [2024-11-13 15:11:18,808 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-11-13 15:11:18,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 678 events. 439/678 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2360 event pairs, 287 based on Foata normal form. 0/677 useless extension candidates. Maximal degree in co-relation 484. Up to 641 conditions per place. [2024-11-13 15:11:18,815 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 25 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-11-13 15:11:18,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 138 flow [2024-11-13 15:11:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:11:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:11:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-13 15:11:18,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2024-11-13 15:11:18,817 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 82 flow. Second operand 3 states and 40 transitions. [2024-11-13 15:11:18,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 138 flow [2024-11-13 15:11:18,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:11:18,819 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 90 flow [2024-11-13 15:11:18,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2024-11-13 15:11:18,821 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2024-11-13 15:11:18,821 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 90 flow [2024-11-13 15:11:18,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:18,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:11:18,821 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] [2024-11-13 15:11:18,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:11:18,822 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)] === [2024-11-13 15:11:18,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:11:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1313173968, now seen corresponding path program 1 times [2024-11-13 15:11:18,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:11:18,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390895606] [2024-11-13 15:11:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:11:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:11:18,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:11:18,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390895606] [2024-11-13 15:11:18,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390895606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:11:18,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:11:18,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:11:18,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871478295] [2024-11-13 15:11:18,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:11:18,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:11:18,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:18,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:11:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:11:18,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-13 15:11:18,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:18,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:18,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-13 15:11:18,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:11:19,280 INFO L124 PetriNetUnfolderBase]: 538/782 cut-off events. [2024-11-13 15:11:19,282 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-13 15:11:19,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 782 events. 538/782 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2436 event pairs, 170 based on Foata normal form. 0/759 useless extension candidates. Maximal degree in co-relation 1774. Up to 405 conditions per place. [2024-11-13 15:11:19,296 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 36 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-11-13 15:11:19,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 204 flow [2024-11-13 15:11:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:11:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:11:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2024-11-13 15:11:19,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2024-11-13 15:11:19,301 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 90 flow. Second operand 4 states and 51 transitions. [2024-11-13 15:11:19,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 204 flow [2024-11-13 15:11:19,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 198 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-13 15:11:19,308 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 105 flow [2024-11-13 15:11:19,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-11-13 15:11:19,309 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-11-13 15:11:19,309 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 105 flow [2024-11-13 15:11:19,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:19,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:11:19,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:11:19,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:11:19,314 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)] === [2024-11-13 15:11:19,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:11:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash 594684168, now seen corresponding path program 1 times [2024-11-13 15:11:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:11:19,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514055179] [2024-11-13 15:11:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:11:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:11:19,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:11:19,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514055179] [2024-11-13 15:11:19,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514055179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:11:19,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810073982] [2024-11-13 15:11:19,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:19,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:11:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:11:19,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:11:19,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:11:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:19,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:11:19,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:11:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:11:19,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:11:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:11:19,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810073982] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:11:19,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:11:19,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-13 15:11:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477933458] [2024-11-13 15:11:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:11:19,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:11:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:11:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:11:19,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-13 15:11:19,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:19,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:19,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-13 15:11:19,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:11:20,182 INFO L124 PetriNetUnfolderBase]: 441/667 cut-off events. [2024-11-13 15:11:20,183 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-13 15:11:20,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 667 events. 441/667 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2221 event pairs, 196 based on Foata normal form. 50/717 useless extension candidates. Maximal degree in co-relation 1713. Up to 462 conditions per place. [2024-11-13 15:11:20,190 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 37 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2024-11-13 15:11:20,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 241 flow [2024-11-13 15:11:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:11:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:11:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-13 15:11:20,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43448275862068964 [2024-11-13 15:11:20,195 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 105 flow. Second operand 5 states and 63 transitions. [2024-11-13 15:11:20,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 241 flow [2024-11-13 15:11:20,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:11:20,199 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 122 flow [2024-11-13 15:11:20,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-11-13 15:11:20,203 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-11-13 15:11:20,203 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 122 flow [2024-11-13 15:11:20,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:20,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:11:20,204 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:11:20,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:11:20,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:11:20,405 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)] === [2024-11-13 15:11:20,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:11:20,406 INFO L85 PathProgramCache]: Analyzing trace with hash 369735399, now seen corresponding path program 1 times [2024-11-13 15:11:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:11:20,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391591786] [2024-11-13 15:11:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:11:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:23,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:11:23,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391591786] [2024-11-13 15:11:23,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391591786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:11:23,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575952200] [2024-11-13 15:11:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:11:23,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:11:23,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:11:23,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:11:23,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:11:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:23,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 15:11:23,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:11:23,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:11:24,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 45 [2024-11-13 15:11:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:24,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:11:27,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 90 [2024-11-13 15:11:27,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:11:27,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 124 [2024-11-13 15:11:28,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 376 [2024-11-13 15:11:28,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:11:28,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 691 treesize of output 675 [2024-11-13 15:11:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575952200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:11:59,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:11:59,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-13 15:11:59,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046987359] [2024-11-13 15:11:59,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:11:59,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:11:59,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:11:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:11:59,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-13 15:11:59,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 122 flow. Second operand has 19 states, 19 states have (on average 7.842105263157895) internal successors, (149), 19 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:59,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:59,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-13 15:11:59,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:12:00,603 INFO L124 PetriNetUnfolderBase]: 788/1223 cut-off events. [2024-11-13 15:12:00,604 INFO L125 PetriNetUnfolderBase]: For 859/877 co-relation queries the response was YES. [2024-11-13 15:12:00,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3458 conditions, 1223 events. 788/1223 cut-off events. For 859/877 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4968 event pairs, 58 based on Foata normal form. 19/1242 useless extension candidates. Maximal degree in co-relation 2607. Up to 696 conditions per place. [2024-11-13 15:12:00,616 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 73 selfloop transitions, 23 changer transitions 1/100 dead transitions. [2024-11-13 15:12:00,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 100 transitions, 542 flow [2024-11-13 15:12:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:12:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:12:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-11-13 15:12:00,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506896551724138 [2024-11-13 15:12:00,621 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 122 flow. Second operand 10 states and 147 transitions. [2024-11-13 15:12:00,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 100 transitions, 542 flow [2024-11-13 15:12:00,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 100 transitions, 526 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-13 15:12:00,626 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 270 flow [2024-11-13 15:12:00,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2024-11-13 15:12:00,628 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-11-13 15:12:00,630 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 270 flow [2024-11-13 15:12:00,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.842105263157895) internal successors, (149), 19 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:12:00,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:12:00,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:12:00,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:12:00,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:12:00,832 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)] === [2024-11-13 15:12:00,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:12:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash -278930497, now seen corresponding path program 2 times [2024-11-13 15:12:00,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:12:00,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112212036] [2024-11-13 15:12:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:12:00,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:12:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:12:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:12:02,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:12:02,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112212036] [2024-11-13 15:12:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112212036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:12:02,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997494142] [2024-11-13 15:12:02,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:12:02,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:12:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:12:02,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:12:02,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:12:02,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:12:02,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:12:02,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 15:12:02,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:12:02,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:12:02,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 35 [2024-11-13 15:12:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:12:03,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:12:05,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 376 [2024-11-13 15:12:05,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:12:05,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 691 treesize of output 675 [2024-11-13 15:12:28,195 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 15:16:14,471 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-13 15:16:14,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-13 15:16:14,473 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-13 15:16:14,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:16:14,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:14,674 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-11-13 15:16:14,682 INFO L158 Benchmark]: Toolchain (without parser) took 300356.34ms. Allocated memory was 117.4MB in the beginning and 1.0GB in the end (delta: 889.2MB). Free memory was 94.6MB in the beginning and 646.3MB in the end (delta: -551.7MB). Peak memory consumption was 624.8MB. Max. memory is 16.1GB. [2024-11-13 15:16:14,682 INFO L158 Benchmark]: CDTParser took 1.13ms. Allocated memory is still 142.6MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:16:14,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.23ms. Allocated memory is still 117.4MB. Free memory was 94.6MB in the beginning and 82.1MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:16:14,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.83ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 80.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:16:14,684 INFO L158 Benchmark]: Boogie Preprocessor took 67.59ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 77.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:16:14,684 INFO L158 Benchmark]: RCFGBuilder took 1433.26ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 63.5MB in the end (delta: 14.3MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2024-11-13 15:16:14,685 INFO L158 Benchmark]: TraceAbstraction took 298359.87ms. Allocated memory was 117.4MB in the beginning and 1.0GB in the end (delta: 889.2MB). Free memory was 62.9MB in the beginning and 646.3MB in the end (delta: -583.4MB). Peak memory consumption was 594.6MB. Max. memory is 16.1GB. [2024-11-13 15:16:14,687 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13ms. Allocated memory is still 142.6MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.23ms. Allocated memory is still 117.4MB. Free memory was 94.6MB in the beginning and 82.1MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.83ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 80.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.59ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 77.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1433.26ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 63.5MB in the end (delta: 14.3MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. * TraceAbstraction took 298359.87ms. Allocated memory was 117.4MB in the beginning and 1.0GB in the end (delta: 889.2MB). Free memory was 62.9MB in the beginning and 646.3MB in the end (delta: -583.4MB). Peak memory consumption was 594.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd --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 cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:16:17,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:16:17,893 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 15:16:17,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:16:17,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:16:17,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:16:17,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:16:17,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:16:17,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:16:17,935 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:16:17,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:16:17,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:16:17,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:16:17,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:16:17,938 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:16:17,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:16:17,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:16:17,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:16:17,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:16:17,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:16:17,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:16:17,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:16:17,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:16:17,940 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:16:17,940 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:16:17,940 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:16:17,940 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:16:17,940 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:16:17,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:16:17,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:16:17,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:16:17,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:16:17,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:16:17,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:16:17,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:16:17,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:16:17,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:16:17,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:16:17,943 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:16:17,943 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:16:17,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:16:17,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:16:17,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:16:17,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:16:17,944 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd 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 -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2024-11-13 15:16:18,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:16:18,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:16:18,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:16:18,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:16:18,365 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:16:18,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c Unable to find full path for "g++" [2024-11-13 15:16:20,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:16:21,104 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:16:21,104 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-11-13 15:16:21,122 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/data/a178be3ef/3a1693fb23fd4b51ba0c6a4a4eb0d0c9/FLAG15ed626ba [2024-11-13 15:16:21,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/data/a178be3ef/3a1693fb23fd4b51ba0c6a4a4eb0d0c9 [2024-11-13 15:16:21,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:16:21,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:16:21,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:16:21,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:16:21,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:16:21,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0b54f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21, skipping insertion in model container [2024-11-13 15:16:21,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:16:21,462 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2572,2585] [2024-11-13 15:16:21,481 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:16:21,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:16:21,515 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:16:21,563 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2572,2585] [2024-11-13 15:16:21,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:16:21,603 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:16:21,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21 WrapperNode [2024-11-13 15:16:21,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:16:21,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:16:21,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:16:21,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:16:21,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,686 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 205 [2024-11-13 15:16:21,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:16:21,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:16:21,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:16:21,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:16:21,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,744 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 15:16:21,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:16:21,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:16:21,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:16:21,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:16:21,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (1/1) ... [2024-11-13 15:16:21,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:16:21,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:16:21,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:16:21,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:16:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:16:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:16:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 15:16:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 15:16:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 15:16:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:16:21,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:16:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:16:21,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:16:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 15:16:21,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 15:16:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:16:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:16:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:16:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:16:21,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:16:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 15:16:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 15:16:21,880 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:16:22,086 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:16:22,089 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:16:22,704 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:16:22,706 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:16:23,236 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:16:23,237 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 15:16:23,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:16:23 BoogieIcfgContainer [2024-11-13 15:16:23,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:16:23,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:16:23,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:16:23,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:16:23,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:16:21" (1/3) ... [2024-11-13 15:16:23,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be15f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:16:23, skipping insertion in model container [2024-11-13 15:16:23,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:16:21" (2/3) ... [2024-11-13 15:16:23,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be15f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:16:23, skipping insertion in model container [2024-11-13 15:16:23,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:16:23" (3/3) ... [2024-11-13 15:16:23,250 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2024-11-13 15:16:23,266 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:16:23,268 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-mts.wvr.c that has 4 procedures, 26 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 15:16:23,268 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:16:23,389 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 15:16:23,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 79 flow [2024-11-13 15:16:23,473 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-13 15:16:23,476 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:16:23,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 26 events. 4/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-13 15:16:23,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 29 transitions, 79 flow [2024-11-13 15:16:23,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 25 transitions, 68 flow [2024-11-13 15:16:23,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:16:23,507 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;@48ff1797, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:16:23,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 15:16:23,520 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:16:23,520 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-13 15:16:23,521 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:16:23,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:16:23,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:16:23,522 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)] === [2024-11-13 15:16:23,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:16:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1100895276, now seen corresponding path program 1 times [2024-11-13 15:16:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:16:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450611312] [2024-11-13 15:16:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:16:23,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:16:23,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:16:23,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:16:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:16:23,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:16:23,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:16:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:16:24,195 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:16:24,196 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:16:24,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450611312] [2024-11-13 15:16:24,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450611312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:16:24,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:16:24,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:16:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541061579] [2024-11-13 15:16:24,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:16:24,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:16:24,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:16:24,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:16:24,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:16:24,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-13 15:16:24,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:24,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:16:24,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-13 15:16:24,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:16:24,585 INFO L124 PetriNetUnfolderBase]: 439/652 cut-off events. [2024-11-13 15:16:24,585 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-13 15:16:24,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 652 events. 439/652 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2206 event pairs, 124 based on Foata normal form. 1/524 useless extension candidates. Maximal degree in co-relation 1167. Up to 423 conditions per place. [2024-11-13 15:16:24,598 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 35 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2024-11-13 15:16:24,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 197 flow [2024-11-13 15:16:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:16:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:16:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-11-13 15:16:24,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2024-11-13 15:16:24,617 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 68 flow. Second operand 3 states and 56 transitions. [2024-11-13 15:16:24,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 197 flow [2024-11-13 15:16:24,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:16:24,626 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 82 flow [2024-11-13 15:16:24,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2024-11-13 15:16:24,633 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-13 15:16:24,634 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 82 flow [2024-11-13 15:16:24,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:24,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:16:24,635 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] [2024-11-13 15:16:24,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:16:24,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:24,838 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)] === [2024-11-13 15:16:24,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:16:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1453208514, now seen corresponding path program 1 times [2024-11-13 15:16:24,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:16:24,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420090775] [2024-11-13 15:16:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:16:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:24,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:16:24,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:16:24,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:16:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:16:24,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:16:24,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:16:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:16:25,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:16:25,070 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:16:25,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420090775] [2024-11-13 15:16:25,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420090775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:16:25,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:16:25,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:16:25,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367396310] [2024-11-13 15:16:25,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:16:25,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:16:25,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:16:25,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:16:25,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:16:25,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-13 15:16:25,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:25,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:16:25,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-13 15:16:25,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:16:25,413 INFO L124 PetriNetUnfolderBase]: 422/626 cut-off events. [2024-11-13 15:16:25,413 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-13 15:16:25,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 626 events. 422/626 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2151 event pairs, 177 based on Foata normal form. 52/666 useless extension candidates. Maximal degree in co-relation 604. Up to 434 conditions per place. [2024-11-13 15:16:25,422 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 36 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2024-11-13 15:16:25,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 208 flow [2024-11-13 15:16:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:16:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:16:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-13 15:16:25,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2024-11-13 15:16:25,427 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 82 flow. Second operand 5 states and 62 transitions. [2024-11-13 15:16:25,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 208 flow [2024-11-13 15:16:25,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 15:16:25,430 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 97 flow [2024-11-13 15:16:25,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-13 15:16:25,431 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-11-13 15:16:25,431 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 97 flow [2024-11-13 15:16:25,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:25,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:16:25,436 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] [2024-11-13 15:16:25,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:16:25,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:25,636 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)] === [2024-11-13 15:16:25,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:16:25,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1438609051, now seen corresponding path program 1 times [2024-11-13 15:16:25,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:16:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371264284] [2024-11-13 15:16:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:16:25,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:25,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:16:25,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:16:25,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:16:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:16:25,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:16:25,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:16:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:16:25,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:16:25,826 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:16:25,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371264284] [2024-11-13 15:16:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371264284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:16:25,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:16:25,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:16:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543510626] [2024-11-13 15:16:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:16:25,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:16:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:16:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:16:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:16:25,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-13 15:16:25,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:25,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:16:25,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-13 15:16:25,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:16:26,067 INFO L124 PetriNetUnfolderBase]: 422/632 cut-off events. [2024-11-13 15:16:26,069 INFO L125 PetriNetUnfolderBase]: For 489/489 co-relation queries the response was YES. [2024-11-13 15:16:26,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1676 conditions, 632 events. 422/632 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2097 event pairs, 275 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 643. Up to 611 conditions per place. [2024-11-13 15:16:26,075 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 26 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-11-13 15:16:26,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 155 flow [2024-11-13 15:16:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:16:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:16:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-13 15:16:26,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2024-11-13 15:16:26,079 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 97 flow. Second operand 3 states and 40 transitions. [2024-11-13 15:16:26,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 155 flow [2024-11-13 15:16:26,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 15:16:26,083 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 98 flow [2024-11-13 15:16:26,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-13 15:16:26,085 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-11-13 15:16:26,085 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 98 flow [2024-11-13 15:16:26,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:26,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:16:26,086 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] [2024-11-13 15:16:26,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:16:26,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:26,290 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)] === [2024-11-13 15:16:26,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:16:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash 145459346, now seen corresponding path program 1 times [2024-11-13 15:16:26,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:16:26,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516779857] [2024-11-13 15:16:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:16:26,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:26,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:16:26,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:16:26,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:16:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:16:26,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:16:26,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:16:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:16:26,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:16:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:16:27,093 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:16:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516779857] [2024-11-13 15:16:27,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516779857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:16:27,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:16:27,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-13 15:16:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136542386] [2024-11-13 15:16:27,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:16:27,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:16:27,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:16:27,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:16:27,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:16:27,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-13 15:16:27,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 98 flow. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:27,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:16:27,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-13 15:16:27,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:16:28,864 INFO L124 PetriNetUnfolderBase]: 953/1383 cut-off events. [2024-11-13 15:16:28,865 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-11-13 15:16:28,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3446 conditions, 1383 events. 953/1383 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5180 event pairs, 118 based on Foata normal form. 29/1362 useless extension candidates. Maximal degree in co-relation 3432. Up to 374 conditions per place. [2024-11-13 15:16:28,876 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 108 selfloop transitions, 48 changer transitions 0/157 dead transitions. [2024-11-13 15:16:28,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 157 transitions, 762 flow [2024-11-13 15:16:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:16:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 15:16:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 226 transitions. [2024-11-13 15:16:28,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45841784989858014 [2024-11-13 15:16:28,879 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 98 flow. Second operand 17 states and 226 transitions. [2024-11-13 15:16:28,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 157 transitions, 762 flow [2024-11-13 15:16:28,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 157 transitions, 758 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 15:16:28,886 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 479 flow [2024-11-13 15:16:28,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=479, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2024-11-13 15:16:28,887 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-11-13 15:16:28,888 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 479 flow [2024-11-13 15:16:28,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:16:28,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:16:28,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:16:28,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:16:29,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:29,090 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)] === [2024-11-13 15:16:29,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:16:29,090 INFO L85 PathProgramCache]: Analyzing trace with hash -304538097, now seen corresponding path program 1 times [2024-11-13 15:16:29,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:16:29,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146422834] [2024-11-13 15:16:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:16:29,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:16:29,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:16:29,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:16:29,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2da8faa1-280a-4180-a432-2b473bafae0f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:16:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:16:29,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 15:16:29,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:16:29,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:16:30,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:16:30,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 46 [2024-11-13 15:16:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:16:31,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:16:46,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 91 [2024-11-13 15:16:46,152 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-11-13 15:16:46,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 152 [2024-11-13 15:16:47,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 482 treesize of output 434 [2024-11-13 15:16:48,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:16:48,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 941 treesize of output 951