./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:31:13,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:31:13,164 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:31:13,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:31:13,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:31:13,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:31:13,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:31:13,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:31:13,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:31:13,222 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:31:13,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:31:13,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:31:13,225 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:31:13,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:31:13,229 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:31:13,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:31:13,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:31:13,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:31:13,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:31:13,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:31:13,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:31:13,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:31:13,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:31:13,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:31:13,236 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:31:13,237 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:31:13,237 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:31:13,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:31:13,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:31:13,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:31:13,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:31:13,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:31:13,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:31:13,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:31:13,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:31:13,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:31:13,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:31:13,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:31:13,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:31:13,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:31:13,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:31:13,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:31:13,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:31:13,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:31:13,243 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2024-11-08 16:31:13,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:31:13,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:31:13,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:31:13,564 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:31:13,564 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:31:13,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c Unable to find full path for "g++" [2024-11-08 16:31:15,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:31:16,048 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:31:16,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2024-11-08 16:31:16,063 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/data/aed08083b/5a97e07ff0b24d4797b1f4135a46d398/FLAG94ba04522 [2024-11-08 16:31:16,309 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/data/aed08083b/5a97e07ff0b24d4797b1f4135a46d398 [2024-11-08 16:31:16,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:31:16,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:31:16,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:31:16,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:31:16,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:31:16,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d7363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16, skipping insertion in model container [2024-11-08 16:31:16,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:31:16,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:31:16,667 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:31:16,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:31:16,735 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:31:16,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16 WrapperNode [2024-11-08 16:31:16,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:31:16,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:31:16,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:31:16,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:31:16,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,827 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 383 [2024-11-08 16:31:16,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:31:16,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:31:16,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:31:16,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:31:16,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,852 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,880 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 16:31:16,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:31:16,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:31:16,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:31:16,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:31:16,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (1/1) ... [2024-11-08 16:31:16,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:31:16,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:31:16,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:31:16,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:31:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:31:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:31:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:31:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:31:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:31:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:31:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:31:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:31:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:31:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 16:31:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 16:31:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 16:31:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 16:31:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:31:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:31:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:31:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:31:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:31:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:31:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:31:17,047 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:31:17,274 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:31:17,277 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:31:18,110 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:31:18,110 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:31:18,933 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:31:18,935 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:31:18,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:31:18 BoogieIcfgContainer [2024-11-08 16:31:18,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:31:18,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:31:18,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:31:18,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:31:18,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:31:16" (1/3) ... [2024-11-08 16:31:18,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ffabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:31:18, skipping insertion in model container [2024-11-08 16:31:18,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:16" (2/3) ... [2024-11-08 16:31:18,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ffabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:31:18, skipping insertion in model container [2024-11-08 16:31:18,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:31:18" (3/3) ... [2024-11-08 16:31:18,950 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-11-08 16:31:18,973 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:31:18,974 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-08 16:31:18,974 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:31:19,193 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 16:31:19,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 109 transitions, 246 flow [2024-11-08 16:31:19,337 INFO L124 PetriNetUnfolderBase]: 14/105 cut-off events. [2024-11-08 16:31:19,337 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 16:31:19,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 105 events. 14/105 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 320 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2024-11-08 16:31:19,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 109 transitions, 246 flow [2024-11-08 16:31:19,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 103 transitions, 227 flow [2024-11-08 16:31:19,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:31:19,377 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;@3f45a553, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:31:19,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-08 16:31:19,385 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:31:19,385 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 16:31:19,385 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:31:19,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:19,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:31:19,387 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 16:31:19,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash 38514129, now seen corresponding path program 1 times [2024-11-08 16:31:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:19,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656510020] [2024-11-08 16:31:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:19,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:19,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:19,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656510020] [2024-11-08 16:31:19,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656510020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:19,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:19,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:31:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487261467] [2024-11-08 16:31:19,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:19,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:31:19,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:19,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:31:19,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:31:19,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 109 [2024-11-08 16:31:19,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:19,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:19,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 109 [2024-11-08 16:31:19,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:27,752 INFO L124 PetriNetUnfolderBase]: 25267/37336 cut-off events. [2024-11-08 16:31:27,752 INFO L125 PetriNetUnfolderBase]: For 1177/1177 co-relation queries the response was YES. [2024-11-08 16:31:27,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69150 conditions, 37336 events. 25267/37336 cut-off events. For 1177/1177 co-relation queries the response was YES. Maximal size of possible extension queue 3672. Compared 308774 event pairs, 18972 based on Foata normal form. 3/18266 useless extension candidates. Maximal degree in co-relation 64548. Up to 30511 conditions per place. [2024-11-08 16:31:28,284 INFO L140 encePairwiseOnDemand]: 82/109 looper letters, 51 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-11-08 16:31:28,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 345 flow [2024-11-08 16:31:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:31:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:31:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2024-11-08 16:31:28,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5825688073394495 [2024-11-08 16:31:28,306 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 227 flow. Second operand 4 states and 254 transitions. [2024-11-08 16:31:28,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 345 flow [2024-11-08 16:31:28,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 101 transitions, 332 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 16:31:28,911 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 280 flow [2024-11-08 16:31:28,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=90, PETRI_TRANSITIONS=101} [2024-11-08 16:31:28,919 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -12 predicate places. [2024-11-08 16:31:28,922 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 280 flow [2024-11-08 16:31:28,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:28,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:28,923 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 16:31:28,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:31:28,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 16:31:28,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:28,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2021979146, now seen corresponding path program 1 times [2024-11-08 16:31:28,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:28,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400838885] [2024-11-08 16:31:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:28,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:29,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400838885] [2024-11-08 16:31:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400838885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:31:29,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50986472] [2024-11-08 16:31:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:29,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:29,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:31:29,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:31:29,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:31:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:29,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:31:29,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:31:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:29,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:31:29,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50986472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:29,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:31:29,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 16:31:29,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588973860] [2024-11-08 16:31:29,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:29,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:31:29,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:31:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:31:29,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 109 [2024-11-08 16:31:29,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:29,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:29,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 109 [2024-11-08 16:31:29,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:35,328 INFO L124 PetriNetUnfolderBase]: 25267/37333 cut-off events. [2024-11-08 16:31:35,328 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-11-08 16:31:35,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68606 conditions, 37333 events. 25267/37333 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 3672. Compared 308436 event pairs, 18972 based on Foata normal form. 3/18263 useless extension candidates. Maximal degree in co-relation 68524. Up to 30496 conditions per place. [2024-11-08 16:31:35,689 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 41 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-11-08 16:31:35,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 98 transitions, 384 flow [2024-11-08 16:31:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:31:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:31:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 325 transitions. [2024-11-08 16:31:35,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4969418960244648 [2024-11-08 16:31:35,701 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 280 flow. Second operand 6 states and 325 transitions. [2024-11-08 16:31:35,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 98 transitions, 384 flow [2024-11-08 16:31:35,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:31:35,706 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 302 flow [2024-11-08 16:31:35,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-11-08 16:31:35,708 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -10 predicate places. [2024-11-08 16:31:35,708 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 302 flow [2024-11-08 16:31:35,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:35,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:35,710 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 16:31:35,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:31:35,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:35,911 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 16:31:35,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1743154639, now seen corresponding path program 1 times [2024-11-08 16:31:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880079052] [2024-11-08 16:31:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:35,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:36,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880079052] [2024-11-08 16:31:36,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880079052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:31:36,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183009777] [2024-11-08 16:31:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:36,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:31:36,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:31:36,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:31:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:36,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:31:36,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:31:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:36,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:31:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:36,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183009777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:31:36,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:31:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 16:31:36,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380783030] [2024-11-08 16:31:36,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:31:36,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:31:36,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:36,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:31:36,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:31:36,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 109 [2024-11-08 16:31:36,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 302 flow. Second operand has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:36,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:36,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 109 [2024-11-08 16:31:36,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:42,252 INFO L124 PetriNetUnfolderBase]: 25285/37396 cut-off events. [2024-11-08 16:31:42,252 INFO L125 PetriNetUnfolderBase]: For 380/380 co-relation queries the response was YES. [2024-11-08 16:31:42,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68774 conditions, 37396 events. 25285/37396 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 3672. Compared 309274 event pairs, 18972 based on Foata normal form. 9/18326 useless extension candidates. Maximal degree in co-relation 68526. Up to 30511 conditions per place. [2024-11-08 16:31:42,971 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 48 selfloop transitions, 37 changer transitions 0/125 dead transitions. [2024-11-08 16:31:42,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 125 transitions, 646 flow [2024-11-08 16:31:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:31:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:31:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 534 transitions. [2024-11-08 16:31:42,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48990825688073397 [2024-11-08 16:31:42,990 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 302 flow. Second operand 10 states and 534 transitions. [2024-11-08 16:31:42,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 125 transitions, 646 flow [2024-11-08 16:31:42,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 125 transitions, 563 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-08 16:31:43,001 INFO L231 Difference]: Finished difference. Result has 99 places, 125 transitions, 517 flow [2024-11-08 16:31:43,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=99, PETRI_TRANSITIONS=125} [2024-11-08 16:31:43,008 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -3 predicate places. [2024-11-08 16:31:43,013 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 125 transitions, 517 flow [2024-11-08 16:31:43,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:43,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:43,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:43,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:31:43,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505dc6cf-b4c4-4072-8d09-416eaaed2e49/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:43,215 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 16:31:43,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1860021249, now seen corresponding path program 1 times [2024-11-08 16:31:43,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:43,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735760131] [2024-11-08 16:31:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:43,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:43,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:43,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735760131] [2024-11-08 16:31:43,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735760131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:43,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:43,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:31:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573415992] [2024-11-08 16:31:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:43,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:31:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:31:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:31:43,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 109 [2024-11-08 16:31:43,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 125 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:43,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:43,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 109 [2024-11-08 16:31:43,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:50,169 INFO L124 PetriNetUnfolderBase]: 33095/48802 cut-off events. [2024-11-08 16:31:50,170 INFO L125 PetriNetUnfolderBase]: For 425/425 co-relation queries the response was YES. [2024-11-08 16:31:50,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90561 conditions, 48802 events. 33095/48802 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 4146. Compared 415721 event pairs, 9618 based on Foata normal form. 0/26519 useless extension candidates. Maximal degree in co-relation 90454. Up to 25909 conditions per place. [2024-11-08 16:31:50,705 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 113 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2024-11-08 16:31:50,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 158 transitions, 820 flow [2024-11-08 16:31:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:31:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:31:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2024-11-08 16:31:50,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7064220183486238 [2024-11-08 16:31:50,707 INFO L175 Difference]: Start difference. First operand has 99 places, 125 transitions, 517 flow. Second operand 3 states and 231 transitions. [2024-11-08 16:31:50,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 158 transitions, 820 flow [2024-11-08 16:31:50,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 158 transitions, 783 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 16:31:50,714 INFO L231 Difference]: Finished difference. Result has 100 places, 126 transitions, 494 flow [2024-11-08 16:31:50,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=100, PETRI_TRANSITIONS=126} [2024-11-08 16:31:50,715 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2024-11-08 16:31:50,715 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 126 transitions, 494 flow [2024-11-08 16:31:50,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:50,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:50,716 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:50,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:31:50,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 16:31:50,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2096587437, now seen corresponding path program 1 times [2024-11-08 16:31:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:50,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900650171] [2024-11-08 16:31:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:50,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:50,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900650171] [2024-11-08 16:31:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900650171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:50,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:50,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:31:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617478754] [2024-11-08 16:31:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:50,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:31:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:31:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:31:50,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 109 [2024-11-08 16:31:50,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 126 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:50,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:50,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 109 [2024-11-08 16:31:50,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:58,771 INFO L124 PetriNetUnfolderBase]: 34988/50640 cut-off events. [2024-11-08 16:31:58,771 INFO L125 PetriNetUnfolderBase]: For 2700/2700 co-relation queries the response was YES. [2024-11-08 16:31:58,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101366 conditions, 50640 events. 34988/50640 cut-off events. For 2700/2700 co-relation queries the response was YES. Maximal size of possible extension queue 3917. Compared 423628 event pairs, 28448 based on Foata normal form. 601/26880 useless extension candidates. Maximal degree in co-relation 101223. Up to 40698 conditions per place. [2024-11-08 16:31:59,152 INFO L140 encePairwiseOnDemand]: 95/109 looper letters, 126 selfloop transitions, 10 changer transitions 0/173 dead transitions. [2024-11-08 16:31:59,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 173 transitions, 940 flow [2024-11-08 16:31:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:31:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:31:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2024-11-08 16:31:59,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5871559633027523 [2024-11-08 16:31:59,153 INFO L175 Difference]: Start difference. First operand has 100 places, 126 transitions, 494 flow. Second operand 5 states and 320 transitions. [2024-11-08 16:31:59,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 173 transitions, 940 flow [2024-11-08 16:31:59,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 173 transitions, 937 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:31:59,158 INFO L231 Difference]: Finished difference. Result has 106 places, 130 transitions, 566 flow [2024-11-08 16:31:59,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=106, PETRI_TRANSITIONS=130} [2024-11-08 16:31:59,159 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 4 predicate places. [2024-11-08 16:31:59,159 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 130 transitions, 566 flow [2024-11-08 16:31:59,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:59,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:59,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:59,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:31:59,160 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 16:31:59,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:59,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1552818482, now seen corresponding path program 1 times [2024-11-08 16:31:59,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:59,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825255887] [2024-11-08 16:31:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:59,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:59,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825255887] [2024-11-08 16:31:59,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825255887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:59,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:59,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:31:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034037530] [2024-11-08 16:31:59,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:59,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:31:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:31:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:31:59,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 109 [2024-11-08 16:31:59,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 130 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:59,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:59,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 109 [2024-11-08 16:31:59,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand