./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:04:27,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:04:27,108 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:04:27,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:04:27,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:04:27,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:04:27,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:04:27,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:04:27,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:04:27,155 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:04:27,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:04:27,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:04:27,156 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:04:27,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:04:27,156 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:04:27,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:04:27,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:04:27,158 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:04:27,158 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:04:27,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:04:27,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:04:27,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:04:27,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:04:27,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:04:27,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:04:27,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:04:27,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:04:27,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:04:27,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:04:27,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:04:27,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:04:27,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:04:27,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:04:27,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:04:27,160 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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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 -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2024-11-13 15:04:27,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:04:27,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:04:27,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:04:27,542 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:04:27,542 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:04:27,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c Unable to find full path for "g++" [2024-11-13 15:04:29,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:04:29,828 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:04:29,829 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-13 15:04:29,837 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/data/89590dff7/8f0d4e3a55264222ae1338553f3dcfe9/FLAG204b0bfea [2024-11-13 15:04:29,860 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/data/89590dff7/8f0d4e3a55264222ae1338553f3dcfe9 [2024-11-13 15:04:29,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:04:29,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:04:29,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:04:29,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:04:29,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:04:29,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:04:29" (1/1) ... [2024-11-13 15:04:29,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409e06cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:29, skipping insertion in model container [2024-11-13 15:04:29,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:04:29" (1/1) ... [2024-11-13 15:04:29,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:04:30,079 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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2644,2657] [2024-11-13 15:04:30,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:04:30,096 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:04:30,119 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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2644,2657] [2024-11-13 15:04:30,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:04:30,138 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:04:30,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30 WrapperNode [2024-11-13 15:04:30,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:04:30,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:04:30,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:04:30,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:04:30,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,184 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 180 [2024-11-13 15:04:30,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:04:30,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:04:30,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:04:30,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:04:30,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,198 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,214 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 3, 9]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 1, 5]. [2024-11-13 15:04:30,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:04:30,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:04:30,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:04:30,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:04:30,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (1/1) ... [2024-11-13 15:04:30,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:04:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:30,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:04:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:04:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:04:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:04:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:04:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:04:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:04:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:04:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:04:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:04:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:04:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:04:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:04:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:04:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:04:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:04:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:04:30,335 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 15:04:30,484 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:04:30,487 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:04:30,940 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:04:30,940 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:04:31,409 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:04:31,410 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-13 15:04:31,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:04:31 BoogieIcfgContainer [2024-11-13 15:04:31,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:04:31,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:04:31,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:04:31,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:04:31,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:04:29" (1/3) ... [2024-11-13 15:04:31,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b956a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:04:31, skipping insertion in model container [2024-11-13 15:04:31,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:04:30" (2/3) ... [2024-11-13 15:04:31,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b956a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:04:31, skipping insertion in model container [2024-11-13 15:04:31,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:04:31" (3/3) ... [2024-11-13 15:04:31,426 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2024-11-13 15:04:31,444 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:04:31,446 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG loop-tiling-eq.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-13 15:04:31,447 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:04:31,511 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:04:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 28 transitions, 70 flow [2024-11-13 15:04:31,601 INFO L124 PetriNetUnfolderBase]: 7/26 cut-off events. [2024-11-13 15:04:31,603 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:04:31,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 7/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2024-11-13 15:04:31,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 28 transitions, 70 flow [2024-11-13 15:04:31,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 25 transitions, 62 flow [2024-11-13 15:04:31,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:04:31,645 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;@5cd9b09f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:04:31,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-13 15:04:31,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:04:31,665 INFO L124 PetriNetUnfolderBase]: 7/24 cut-off events. [2024-11-13 15:04:31,665 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:04:31,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:31,666 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:31,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:04:31,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1807953174, now seen corresponding path program 1 times [2024-11-13 15:04:31,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698167510] [2024-11-13 15:04:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:31,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:32,289 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 15:04:32,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:32,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698167510] [2024-11-13 15:04:32,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698167510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:04:32,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:04:32,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:04:32,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746375587] [2024-11-13 15:04:32,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:32,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:04:32,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:04:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:04:32,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:04:32,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 15:04:32,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:32,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:04:32,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:32,570 INFO L124 PetriNetUnfolderBase]: 113/193 cut-off events. [2024-11-13 15:04:32,571 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-13 15:04:32,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 193 events. 113/193 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 470 event pairs, 60 based on Foata normal form. 1/140 useless extension candidates. Maximal degree in co-relation 162. Up to 100 conditions per place. [2024-11-13 15:04:32,575 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 25 selfloop transitions, 2 changer transitions 15/43 dead transitions. [2024-11-13 15:04:32,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 194 flow [2024-11-13 15:04:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:04:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:04:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-13 15:04:32,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-11-13 15:04:32,591 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 62 flow. Second operand 4 states and 55 transitions. [2024-11-13 15:04:32,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 194 flow [2024-11-13 15:04:32,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:04:32,599 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 68 flow [2024-11-13 15:04:32,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2024-11-13 15:04:32,606 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2024-11-13 15:04:32,607 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 68 flow [2024-11-13 15:04:32,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 15:04:32,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:32,607 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:32,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:04:32,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:04:32,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -557324636, now seen corresponding path program 1 times [2024-11-13 15:04:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619941499] [2024-11-13 15:04:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:32,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:32,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619941499] [2024-11-13 15:04:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619941499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:32,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350691842] [2024-11-13 15:04:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:32,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:32,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:32,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:32,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:04:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:33,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:04:33,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:33,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:33,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350691842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:04:33,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:04:33,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-13 15:04:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780491477] [2024-11-13 15:04:33,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:33,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:04:33,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:04:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:04:33,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:04:33,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 68 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 15:04:33,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:33,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:04:33,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:33,414 INFO L124 PetriNetUnfolderBase]: 86/144 cut-off events. [2024-11-13 15:04:33,414 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 15:04:33,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 144 events. 86/144 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 277 event pairs, 22 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 293. Up to 67 conditions per place. [2024-11-13 15:04:33,416 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 32 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-11-13 15:04:33,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 180 flow [2024-11-13 15:04:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:04:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:04:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 65 transitions. [2024-11-13 15:04:33,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29017857142857145 [2024-11-13 15:04:33,418 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 68 flow. Second operand 8 states and 65 transitions. [2024-11-13 15:04:33,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 180 flow [2024-11-13 15:04:33,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-13 15:04:33,420 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 101 flow [2024-11-13 15:04:33,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=101, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-13 15:04:33,421 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2024-11-13 15:04:33,421 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 101 flow [2024-11-13 15:04:33,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 15:04:33,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:33,421 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 15:04:33,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:04:33,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:33,625 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:04:33,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash 250958607, now seen corresponding path program 1 times [2024-11-13 15:04:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:33,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377076655] [2024-11-13 15:04:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:33,932 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 15:04:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:33,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377076655] [2024-11-13 15:04:33,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377076655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:04:33,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:04:33,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:04:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469002563] [2024-11-13 15:04:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:33,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:04:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:04:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:04:33,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:04:33,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 15:04:33,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:33,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:04:33,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:34,143 INFO L124 PetriNetUnfolderBase]: 171/284 cut-off events. [2024-11-13 15:04:34,145 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-13 15:04:34,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 284 events. 171/284 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 746 event pairs, 92 based on Foata normal form. 1/256 useless extension candidates. Maximal degree in co-relation 677. Up to 144 conditions per place. [2024-11-13 15:04:34,150 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 26 selfloop transitions, 3 changer transitions 24/54 dead transitions. [2024-11-13 15:04:34,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 296 flow [2024-11-13 15:04:34,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:04:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:04:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-13 15:04:34,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-11-13 15:04:34,153 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 101 flow. Second operand 5 states and 62 transitions. [2024-11-13 15:04:34,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 296 flow [2024-11-13 15:04:34,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:04:34,158 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-11-13 15:04:34,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-11-13 15:04:34,160 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2024-11-13 15:04:34,161 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-11-13 15:04:34,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 15:04:34,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:34,161 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 15:04:34,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:04:34,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:04:34,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:34,163 INFO L85 PathProgramCache]: Analyzing trace with hash 339434526, now seen corresponding path program 1 times [2024-11-13 15:04:34,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:34,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644105991] [2024-11-13 15:04:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:34,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:34,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:34,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644105991] [2024-11-13 15:04:34,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644105991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:34,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497436357] [2024-11-13 15:04:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:34,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:34,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:34,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:34,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:04:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:34,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:04:34,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:34,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:34,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497436357] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:34,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:04:34,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-11-13 15:04:34,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129626436] [2024-11-13 15:04:34,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:34,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:04:34,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:04:34,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:04:34,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:04:34,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 15:04:34,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:34,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:04:34,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:34,881 INFO L124 PetriNetUnfolderBase]: 108/186 cut-off events. [2024-11-13 15:04:34,881 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-13 15:04:34,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 186 events. 108/186 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 383 event pairs, 46 based on Foata normal form. 14/180 useless extension candidates. Maximal degree in co-relation 463. Up to 146 conditions per place. [2024-11-13 15:04:34,883 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 33 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-11-13 15:04:34,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 240 flow [2024-11-13 15:04:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:04:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:04:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-11-13 15:04:34,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-11-13 15:04:34,885 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 52 transitions. [2024-11-13 15:04:34,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 240 flow [2024-11-13 15:04:34,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 225 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-13 15:04:34,889 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 166 flow [2024-11-13 15:04:34,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-11-13 15:04:34,889 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2024-11-13 15:04:34,889 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 166 flow [2024-11-13 15:04:34,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 15:04:34,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:34,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:34,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:04:35,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-13 15:04:35,096 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:04:35,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1046666781, now seen corresponding path program 1 times [2024-11-13 15:04:35,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:35,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332110112] [2024-11-13 15:04:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:04:35,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377226816] [2024-11-13 15:04:35,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:35,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:35,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:35,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:35,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:04:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:35,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:04:35,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:04:35,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:04:35,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:35,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332110112] [2024-11-13 15:04:35,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:04:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377226816] [2024-11-13 15:04:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377226816] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:35,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:04:35,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-11-13 15:04:35,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120349059] [2024-11-13 15:04:35,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:35,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:04:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:04:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:04:35,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:04:35,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 166 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 15:04:35,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:35,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:04:35,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:36,113 INFO L124 PetriNetUnfolderBase]: 176/305 cut-off events. [2024-11-13 15:04:36,113 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2024-11-13 15:04:36,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 305 events. 176/305 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 940 event pairs, 62 based on Foata normal form. 7/275 useless extension candidates. Maximal degree in co-relation 833. Up to 176 conditions per place. [2024-11-13 15:04:36,117 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 40 selfloop transitions, 6 changer transitions 16/63 dead transitions. [2024-11-13 15:04:36,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 417 flow [2024-11-13 15:04:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:04:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:04:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 73 transitions. [2024-11-13 15:04:36,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32589285714285715 [2024-11-13 15:04:36,123 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 166 flow. Second operand 8 states and 73 transitions. [2024-11-13 15:04:36,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 417 flow [2024-11-13 15:04:36,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 400 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-13 15:04:36,129 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 187 flow [2024-11-13 15:04:36,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=187, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2024-11-13 15:04:36,130 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2024-11-13 15:04:36,130 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 187 flow [2024-11-13 15:04:36,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 15:04:36,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:36,131 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 15:04:36,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:04:36,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:36,331 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:04:36,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:36,332 INFO L85 PathProgramCache]: Analyzing trace with hash -728132971, now seen corresponding path program 1 times [2024-11-13 15:04:36,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:36,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218893498] [2024-11-13 15:04:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:04:36,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:36,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218893498] [2024-11-13 15:04:36,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218893498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:04:36,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:04:36,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:04:36,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927735211] [2024-11-13 15:04:36,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:36,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:04:36,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:04:36,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:04:36,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:04:36,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 15:04:36,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:36,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:04:36,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:36,783 INFO L124 PetriNetUnfolderBase]: 183/323 cut-off events. [2024-11-13 15:04:36,783 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-11-13 15:04:36,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 323 events. 183/323 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 901 event pairs, 93 based on Foata normal form. 19/323 useless extension candidates. Maximal degree in co-relation 723. Up to 228 conditions per place. [2024-11-13 15:04:36,786 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 29 selfloop transitions, 4 changer transitions 36/70 dead transitions. [2024-11-13 15:04:36,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 508 flow [2024-11-13 15:04:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:04:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:04:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-11-13 15:04:36,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-11-13 15:04:36,788 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 187 flow. Second operand 6 states and 71 transitions. [2024-11-13 15:04:36,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 508 flow [2024-11-13 15:04:36,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 469 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-13 15:04:36,792 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 172 flow [2024-11-13 15:04:36,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2024-11-13 15:04:36,793 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2024-11-13 15:04:36,793 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 172 flow [2024-11-13 15:04:36,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 15:04:36,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:36,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:36,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:04:36,794 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:04:36,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:36,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1068342140, now seen corresponding path program 1 times [2024-11-13 15:04:36,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:36,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494782021] [2024-11-13 15:04:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:36,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:04:36,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135355580] [2024-11-13 15:04:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:36,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:36,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:36,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:36,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:04:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:37,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:04:37,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:37,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:04:37,157 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 15:04:37,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-13 15:04:37,235 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 15:04:37,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-13 15:04:37,313 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:04:37,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:04:37,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 15:04:37,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 15:04:37,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 15:04:38,020 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2024-11-13 15:04:38,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2024-11-13 15:04:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:04:38,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:56,556 INFO L349 Elim1Store]: treesize reduction 4, result has 97.4 percent of original size [2024-11-13 15:04:56,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6192 treesize of output 5003 [2024-11-13 15:05:14,797 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 981 treesize of output 927 [2024-11-13 15:05:16,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:16,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 1324 treesize of output 1603 [2024-11-13 15:05:16,372 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 1140 treesize of output 1110 [2024-11-13 15:05:17,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:17,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 1221 treesize of output 1428 [2024-11-13 15:14:35,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-13 15:14:35,865 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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 15:14:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:14:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494782021] [2024-11-13 15:14:35,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:14:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135355580] [2024-11-13 15:14:35,866 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-13 15:14:35,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:14:36,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 15:14:36,067 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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:274) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$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.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) 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) ... 75 more [2024-11-13 15:14:36,074 INFO L158 Benchmark]: Toolchain (without parser) took 606210.05ms. Allocated memory was 117.4MB in the beginning and 536.9MB in the end (delta: 419.4MB). Free memory was 92.8MB in the beginning and 447.3MB in the end (delta: -354.4MB). Peak memory consumption was 329.3MB. Max. memory is 16.1GB. [2024-11-13 15:14:36,075 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:14:36,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.47ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 80.3MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:14:36,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.84ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 78.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:14:36,076 INFO L158 Benchmark]: Boogie Preprocessor took 50.48ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 76.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:14:36,076 INFO L158 Benchmark]: RCFGBuilder took 1174.81ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 63.4MB in the end (delta: 12.7MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2024-11-13 15:14:36,076 INFO L158 Benchmark]: TraceAbstraction took 604659.17ms. Allocated memory was 117.4MB in the beginning and 536.9MB in the end (delta: 419.4MB). Free memory was 62.9MB in the beginning and 447.3MB in the end (delta: -384.4MB). Peak memory consumption was 299.2MB. Max. memory is 16.1GB. [2024-11-13 15:14:36,079 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.47ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 80.3MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.84ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 78.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.48ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 76.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1174.81ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 63.4MB in the end (delta: 12.7MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * TraceAbstraction took 604659.17ms. Allocated memory was 117.4MB in the beginning and 536.9MB in the end (delta: 419.4MB). Free memory was 62.9MB in the beginning and 447.3MB in the end (delta: -384.4MB). Peak memory consumption was 299.2MB. 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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:14:39,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:14:39,404 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 15:14:39,418 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:14:39,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:14:39,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:14:39,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:14:39,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:14:39,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:14:39,471 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:14:39,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:14:39,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:14:39,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:14:39,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:14:39,474 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:14:39,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:14:39,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:14:39,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:14:39,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:14:39,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:14:39,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:14:39,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:14:39,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:14:39,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:14:39,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:14:39,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:14:39,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:14:39,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:14:39,480 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:14:39,480 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:14:39,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:14:39,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:14:39,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:14:39,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:14:39,481 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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/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 -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2024-11-13 15:14:39,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:14:40,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:14:40,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:14:40,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:14:40,007 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:14:40,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c Unable to find full path for "g++" [2024-11-13 15:14:42,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:14:42,887 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:14:42,892 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-13 15:14:42,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/data/94a205990/6a7065c725ff4ac99642e3bf657807e1/FLAG033b0e26f [2024-11-13 15:14:43,147 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/data/94a205990/6a7065c725ff4ac99642e3bf657807e1 [2024-11-13 15:14:43,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:14:43,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:14:43,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:14:43,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:14:43,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:14:43,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be623b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43, skipping insertion in model container [2024-11-13 15:14:43,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,200 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:14:43,502 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 15:14:43,529 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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2644,2657] [2024-11-13 15:14:43,540 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 15:14:43,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:14:43,572 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:14:43,632 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_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2644,2657] [2024-11-13 15:14:43,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:14:43,674 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:14:43,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43 WrapperNode [2024-11-13 15:14:43,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:14:43,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:14:43,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:14:43,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:14:43,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,765 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 173 [2024-11-13 15:14:43,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:14:43,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:14:43,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:14:43,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:14:43,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,793 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,841 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 9, 3]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 5, 1]. [2024-11-13 15:14:43,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:14:43,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:14:43,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:14:43,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:14:43,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (1/1) ... [2024-11-13 15:14:43,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:14:43,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:14:43,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:14:43,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:14:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:14:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:14:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 15:14:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 15:14:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:14:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:14:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:14:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 15:14:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 15:14:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 15:14:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:14:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:14:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:14:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:14:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:14:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:14:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:14:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:14:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:14:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:14:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 15:14:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 15:14:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 15:14:43,992 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 15:14:44,188 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:14:44,190 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:14:45,168 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:14:45,168 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:14:45,687 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:14:45,688 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-13 15:14:45,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:14:45 BoogieIcfgContainer [2024-11-13 15:14:45,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:14:45,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:14:45,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:14:45,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:14:45,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:14:43" (1/3) ... [2024-11-13 15:14:45,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1858c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:14:45, skipping insertion in model container [2024-11-13 15:14:45,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:14:43" (2/3) ... [2024-11-13 15:14:45,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1858c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:14:45, skipping insertion in model container [2024-11-13 15:14:45,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:14:45" (3/3) ... [2024-11-13 15:14:45,703 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2024-11-13 15:14:45,720 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:14:45,722 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG loop-tiling-eq.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-13 15:14:45,722 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:14:45,821 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:14:45,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 28 transitions, 70 flow [2024-11-13 15:14:45,912 INFO L124 PetriNetUnfolderBase]: 7/26 cut-off events. [2024-11-13 15:14:45,914 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:14:45,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 7/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2024-11-13 15:14:45,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 28 transitions, 70 flow [2024-11-13 15:14:45,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 25 transitions, 62 flow [2024-11-13 15:14:45,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:14:45,952 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;@470200a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:14:45,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-13 15:14:45,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:14:45,976 INFO L124 PetriNetUnfolderBase]: 7/24 cut-off events. [2024-11-13 15:14:45,976 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:14:45,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:14:45,977 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:14:45,978 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:14:45,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:14:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -333777258, now seen corresponding path program 1 times [2024-11-13 15:14:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:14:46,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970622866] [2024-11-13 15:14:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:14:46,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:46,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:14:46,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:14:46,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:14:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:14:46,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:14:46,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:14:46,519 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 15:14:46,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:14:46,520 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:14:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970622866] [2024-11-13 15:14:46,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970622866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:14:46,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:14:46,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:14:46,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788876459] [2024-11-13 15:14:46,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:14:46,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:14:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:14:46,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:14:46,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:14:46,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:14:46,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 15:14:46,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:14:46,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:14:46,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:14:47,246 INFO L124 PetriNetUnfolderBase]: 113/193 cut-off events. [2024-11-13 15:14:47,247 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-13 15:14:47,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 193 events. 113/193 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 471 event pairs, 60 based on Foata normal form. 1/140 useless extension candidates. Maximal degree in co-relation 162. Up to 99 conditions per place. [2024-11-13 15:14:47,253 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 24 selfloop transitions, 3 changer transitions 15/43 dead transitions. [2024-11-13 15:14:47,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 43 transitions, 194 flow [2024-11-13 15:14:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:14:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:14:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-13 15:14:47,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-11-13 15:14:47,285 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 62 flow. Second operand 5 states and 58 transitions. [2024-11-13 15:14:47,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 43 transitions, 194 flow [2024-11-13 15:14:47,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:14:47,298 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 70 flow [2024-11-13 15:14:47,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2024-11-13 15:14:47,308 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-11-13 15:14:47,309 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 70 flow [2024-11-13 15:14:47,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 15:14:47,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:14:47,309 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:14:47,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:14:47,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:47,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:14:47,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:14:47,514 INFO L85 PathProgramCache]: Analyzing trace with hash 706409102, now seen corresponding path program 1 times [2024-11-13 15:14:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:14:47,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596147643] [2024-11-13 15:14:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:14:47,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:47,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:14:47,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:14:47,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:14:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:14:47,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:14:47,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:14:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:14:47,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:14:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:14:48,112 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:14:48,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596147643] [2024-11-13 15:14:48,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596147643] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:14:48,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:14:48,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-13 15:14:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550409913] [2024-11-13 15:14:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:14:48,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:14:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:14:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:14:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:14:48,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:14:48,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 15:14:48,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:14:48,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:14:48,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:14:48,620 INFO L124 PetriNetUnfolderBase]: 69/120 cut-off events. [2024-11-13 15:14:48,621 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-13 15:14:48,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 120 events. 69/120 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 222 event pairs, 22 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 246. Up to 66 conditions per place. [2024-11-13 15:14:48,623 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 27 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-11-13 15:14:48,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 149 flow [2024-11-13 15:14:48,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:14:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:14:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-13 15:14:48,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3357142857142857 [2024-11-13 15:14:48,629 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 70 flow. Second operand 5 states and 47 transitions. [2024-11-13 15:14:48,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 149 flow [2024-11-13 15:14:48,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 33 transitions, 143 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-13 15:14:48,633 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 93 flow [2024-11-13 15:14:48,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2024-11-13 15:14:48,634 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2024-11-13 15:14:48,634 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 93 flow [2024-11-13 15:14:48,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 15:14:48,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:14:48,635 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 15:14:48,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:14:48,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:48,836 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:14:48,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:14:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -776664391, now seen corresponding path program 1 times [2024-11-13 15:14:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:14:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987690807] [2024-11-13 15:14:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:14:48,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:48,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:14:48,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:14:48,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:14:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:14:49,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:14:49,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:14:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:14:49,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:14:49,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:14:49,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987690807] [2024-11-13 15:14:49,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987690807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:14:49,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:14:49,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:14:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070202191] [2024-11-13 15:14:49,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:14:49,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:14:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:14:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:14:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:14:49,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:14:49,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 15:14:49,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:14:49,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:14:49,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:14:49,909 INFO L124 PetriNetUnfolderBase]: 116/196 cut-off events. [2024-11-13 15:14:49,909 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-13 15:14:49,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 196 events. 116/196 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 480 event pairs, 38 based on Foata normal form. 8/183 useless extension candidates. Maximal degree in co-relation 484. Up to 107 conditions per place. [2024-11-13 15:14:49,916 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 28 selfloop transitions, 5 changer transitions 15/49 dead transitions. [2024-11-13 15:14:49,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 249 flow [2024-11-13 15:14:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:14:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:14:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-13 15:14:49,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3520408163265306 [2024-11-13 15:14:49,922 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 93 flow. Second operand 7 states and 69 transitions. [2024-11-13 15:14:49,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 249 flow [2024-11-13 15:14:49,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:14:49,929 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 114 flow [2024-11-13 15:14:49,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=7, PETRI_FLOW=114, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-13 15:14:49,932 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-11-13 15:14:49,932 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 114 flow [2024-11-13 15:14:49,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 15:14:49,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:14:49,933 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 15:14:49,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:14:50,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:50,137 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:14:50,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:14:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1871436078, now seen corresponding path program 1 times [2024-11-13 15:14:50,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:14:50,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438763831] [2024-11-13 15:14:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:14:50,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:50,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:14:50,142 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:14:50,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:14:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:14:50,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:14:50,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:14:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:14:50,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:14:50,602 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:14:50,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438763831] [2024-11-13 15:14:50,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438763831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:14:50,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:14:50,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:14:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605196653] [2024-11-13 15:14:50,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:14:50,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:14:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:14:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:14:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:14:50,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:14:50,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 15:14:50,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:14:50,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:14:50,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:14:51,332 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2024-11-13 15:14:51,332 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-11-13 15:14:51,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 201 events. 111/201 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 489 event pairs, 60 based on Foata normal form. 8/186 useless extension candidates. Maximal degree in co-relation 540. Up to 137 conditions per place. [2024-11-13 15:14:51,337 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 26 selfloop transitions, 3 changer transitions 20/50 dead transitions. [2024-11-13 15:14:51,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 276 flow [2024-11-13 15:14:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:14:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:14:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-11-13 15:14:51,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-13 15:14:51,342 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 114 flow. Second operand 6 states and 64 transitions. [2024-11-13 15:14:51,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 276 flow [2024-11-13 15:14:51,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 260 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-13 15:14:51,350 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 124 flow [2024-11-13 15:14:51,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-11-13 15:14:51,353 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 14 predicate places. [2024-11-13 15:14:51,354 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 124 flow [2024-11-13 15:14:51,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 15:14:51,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:14:51,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:14:51,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:14:51,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:51,559 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:14:51,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:14:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash -660665615, now seen corresponding path program 1 times [2024-11-13 15:14:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:14:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039571487] [2024-11-13 15:14:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:14:51,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:51,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:14:51,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:14:51,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:14:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:14:51,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:14:51,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:14:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:14:53,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:14:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:14:54,449 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:14:54,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039571487] [2024-11-13 15:14:54,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039571487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:14:54,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:14:54,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2024-11-13 15:14:54,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539311789] [2024-11-13 15:14:54,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:14:54,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:14:54,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:14:54,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:14:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:14:54,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:14:54,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 124 flow. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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 15:14:54,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:14:54,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:14:54,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:01,627 INFO L124 PetriNetUnfolderBase]: 162/291 cut-off events. [2024-11-13 15:15:01,627 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-13 15:15:01,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 291 events. 162/291 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 773 event pairs, 92 based on Foata normal form. 3/264 useless extension candidates. Maximal degree in co-relation 445. Up to 133 conditions per place. [2024-11-13 15:15:01,630 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 46 selfloop transitions, 27 changer transitions 0/74 dead transitions. [2024-11-13 15:15:01,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 489 flow [2024-11-13 15:15:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:15:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 15:15:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 120 transitions. [2024-11-13 15:15:01,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25210084033613445 [2024-11-13 15:15:01,637 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 124 flow. Second operand 17 states and 120 transitions. [2024-11-13 15:15:01,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 489 flow [2024-11-13 15:15:01,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 438 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-13 15:15:01,642 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 330 flow [2024-11-13 15:15:01,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=330, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-13 15:15:01,643 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 32 predicate places. [2024-11-13 15:15:01,643 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 330 flow [2024-11-13 15:15:01,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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 15:15:01,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:01,644 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 15:15:01,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:15:01,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:01,845 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:15:01,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1779231809, now seen corresponding path program 1 times [2024-11-13 15:15:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:15:01,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720031111] [2024-11-13 15:15:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:01,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:01,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:01,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:01,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:15:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:02,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:15:02,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:15:02,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:15:02,414 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:15:02,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720031111] [2024-11-13 15:15:02,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720031111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:02,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:15:02,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-13 15:15:02,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33980397] [2024-11-13 15:15:02,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:02,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:15:02,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:15:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:15:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:15:02,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:15:02,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 15:15:02,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:02,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:15:02,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:03,370 INFO L124 PetriNetUnfolderBase]: 173/317 cut-off events. [2024-11-13 15:15:03,371 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-13 15:15:03,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 317 events. 173/317 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 863 event pairs, 92 based on Foata normal form. 2/287 useless extension candidates. Maximal degree in co-relation 866. Up to 293 conditions per place. [2024-11-13 15:15:03,375 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 51 selfloop transitions, 23 changer transitions 0/75 dead transitions. [2024-11-13 15:15:03,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 602 flow [2024-11-13 15:15:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:15:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:15:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 69 transitions. [2024-11-13 15:15:03,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3080357142857143 [2024-11-13 15:15:03,381 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 330 flow. Second operand 8 states and 69 transitions. [2024-11-13 15:15:03,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 602 flow [2024-11-13 15:15:03,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 562 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-11-13 15:15:03,387 INFO L231 Difference]: Finished difference. Result has 65 places, 75 transitions, 487 flow [2024-11-13 15:15:03,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=65, PETRI_TRANSITIONS=75} [2024-11-13 15:15:03,389 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 40 predicate places. [2024-11-13 15:15:03,389 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 75 transitions, 487 flow [2024-11-13 15:15:03,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 15:15:03,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:03,389 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 15:15:03,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:15:03,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:03,591 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:15:03,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash 584567378, now seen corresponding path program 1 times [2024-11-13 15:15:03,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:15:03,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507367520] [2024-11-13 15:15:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:03,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:03,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:03,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:03,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:15:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:03,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:15:03,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:15:04,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:15:04,274 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:15:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507367520] [2024-11-13 15:15:04,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507367520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:04,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:15:04,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-13 15:15:04,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677578717] [2024-11-13 15:15:04,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:04,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:15:04,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:15:04,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:15:04,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:15:04,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-13 15:15:04,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 75 transitions, 487 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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 15:15:04,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:15:04,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-13 15:15:04,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:15:05,981 INFO L124 PetriNetUnfolderBase]: 498/891 cut-off events. [2024-11-13 15:15:05,981 INFO L125 PetriNetUnfolderBase]: For 657/657 co-relation queries the response was YES. [2024-11-13 15:15:05,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 891 events. 498/891 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3615 event pairs, 230 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 2374. Up to 300 conditions per place. [2024-11-13 15:15:05,990 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 159 selfloop transitions, 20 changer transitions 0/180 dead transitions. [2024-11-13 15:15:05,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 180 transitions, 1398 flow [2024-11-13 15:15:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:15:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:15:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-11-13 15:15:05,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-11-13 15:15:05,996 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 487 flow. Second operand 12 states and 131 transitions. [2024-11-13 15:15:05,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 180 transitions, 1398 flow [2024-11-13 15:15:06,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 180 transitions, 1375 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-13 15:15:06,006 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 531 flow [2024-11-13 15:15:06,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=531, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-11-13 15:15:06,007 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 52 predicate places. [2024-11-13 15:15:06,008 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 531 flow [2024-11-13 15:15:06,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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 15:15:06,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:15:06,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:06,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:15:06,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:06,210 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:15:06,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash -151987416, now seen corresponding path program 1 times [2024-11-13 15:15:06,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:15:06,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430701611] [2024-11-13 15:15:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:06,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:06,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:06,214 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:06,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a3cc65-d48f-4f3e-99c6-e91f7d6393d4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:15:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:06,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:15:06,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:06,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-13 15:15:06,615 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:15:06,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:15:07,191 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 11 treesize of output 7 [2024-11-13 15:15:07,211 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 15:15:07,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 15:15:08,965 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2024-11-13 15:15:08,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 29 [2024-11-13 15:15:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:15:09,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:52,327 WARN L286 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 60 DAG size of output: 58 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 15:15:52,327 INFO L349 Elim1Store]: treesize reduction 4, result has 97.4 percent of original size [2024-11-13 15:15:52,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1707 treesize of output 1432