./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC --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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:56:47,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:56:47,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 01:56:47,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:56:47,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:56:47,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:56:47,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:56:47,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:56:47,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:56:47,688 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:56:47,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:56:47,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:56:47,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:56:47,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:56:47,690 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:56:47,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:56:47,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:56:47,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:56:47,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:56:47,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:56:47,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:56:47,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:56:47,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:56:47,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:56:47,692 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:56:47,692 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:56:47,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:56:47,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:56:47,692 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:56:47,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:56:47,692 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:56:47,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:56:47,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:56:47,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:56:47,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:47,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:56:47,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:56:47,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:56:47,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:56:47,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:47,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:56:47,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:56:47,694 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:56:47,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:56:47,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:56:47,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:56:47,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:56:47,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:56:47,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:56:47,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:56:47,696 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_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC 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 -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-11-24 01:56:48,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:56:48,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:56:48,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:56:48,018 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:56:48,018 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:56:48,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-24 01:56:51,051 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/data/7a53a9caf/67b08c8d5c0a4de793fe62d8648880e5/FLAGb87dcd4f8 [2024-11-24 01:56:51,408 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:56:51,409 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-24 01:56:51,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/data/7a53a9caf/67b08c8d5c0a4de793fe62d8648880e5/FLAGb87dcd4f8 [2024-11-24 01:56:51,444 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/data/7a53a9caf/67b08c8d5c0a4de793fe62d8648880e5 [2024-11-24 01:56:51,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:56:51,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:56:51,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:56:51,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:56:51,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:56:51,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68517ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51, skipping insertion in model container [2024-11-24 01:56:51,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:56:51,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:56:51,736 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:56:51,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:56:51,796 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:56:51,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51 WrapperNode [2024-11-24 01:56:51,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:56:51,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:56:51,798 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:56:51,798 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:56:51,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,867 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 338 [2024-11-24 01:56:51,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:56:51,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:56:51,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:56:51,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:56:51,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,893 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,924 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-24 01:56:51,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,941 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:56:51,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:56:51,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:56:51,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:56:51,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (1/1) ... [2024-11-24 01:56:51,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:51,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:52,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:56:52,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:56:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:56:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:56:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:56:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:56:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:56:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 01:56:52,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 01:56:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 01:56:52,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 01:56:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 01:56:52,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 01:56:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-24 01:56:52,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-24 01:56:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:56:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:56:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 01:56:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 01:56:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:56:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:56:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:56:52,040 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:56:52,191 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:56:52,193 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:56:52,718 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:56:52,718 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:56:53,497 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:56:53,497 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-24 01:56:53,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:53 BoogieIcfgContainer [2024-11-24 01:56:53,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:56:53,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:56:53,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:56:53,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:56:53,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:56:51" (1/3) ... [2024-11-24 01:56:53,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49562cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:53, skipping insertion in model container [2024-11-24 01:56:53,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:51" (2/3) ... [2024-11-24 01:56:53,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49562cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:53, skipping insertion in model container [2024-11-24 01:56:53,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:53" (3/3) ... [2024-11-24 01:56:53,509 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-11-24 01:56:53,526 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:56:53,528 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 77 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2024-11-24 01:56:53,528 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:56:53,752 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-24 01:56:53,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-11-24 01:56:53,898 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-11-24 01:56:53,902 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 01:56:53,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 280 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-11-24 01:56:53,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-11-24 01:56:53,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-11-24 01:56:53,932 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:56:53,954 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;@7242e920, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:56:53,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-24 01:56:53,962 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:56:53,963 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 01:56:53,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:56:53,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:56:53,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 01:56:53,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-24 01:56:53,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1076866, now seen corresponding path program 1 times [2024-11-24 01:56:53,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:53,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913858965] [2024-11-24 01:56:53,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:53,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:56:54,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:54,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913858965] [2024-11-24 01:56:54,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913858965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:54,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:54,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:56:54,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238633821] [2024-11-24 01:56:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:54,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:56:54,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:54,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:56:54,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:56:54,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-24 01:56:54,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-24 01:56:54,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:56:54,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-24 01:56:54,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:57:04,033 INFO L124 PetriNetUnfolderBase]: 50181/66653 cut-off events. [2024-11-24 01:57:04,033 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2024-11-24 01:57:04,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130942 conditions, 66653 events. 50181/66653 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 6958. Compared 482779 event pairs, 36482 based on Foata normal form. 2/28918 useless extension candidates. Maximal degree in co-relation 124360. Up to 62109 conditions per place. [2024-11-24 01:57:04,747 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 51 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-11-24 01:57:04,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 289 flow [2024-11-24 01:57:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:57:04,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:57:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-24 01:57:04,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-24 01:57:04,771 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-11-24 01:57:04,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 289 flow [2024-11-24 01:57:05,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-24 01:57:05,369 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 208 flow [2024-11-24 01:57:05,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-24 01:57:05,377 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-11-24 01:57:05,377 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 208 flow [2024-11-24 01:57:05,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-24 01:57:05,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:57:05,378 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 01:57:05,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:57:05,378 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-24 01:57:05,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2017222722, now seen corresponding path program 1 times [2024-11-24 01:57:05,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:05,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296985723] [2024-11-24 01:57:05,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:05,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:05,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296985723] [2024-11-24 01:57:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296985723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:57:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662975651] [2024-11-24 01:57:05,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:05,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:05,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:05,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:57:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:05,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:57:05,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:05,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:57:05,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662975651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:05,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:57:05,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:57:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511112894] [2024-11-24 01:57:05,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:05,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:57:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:05,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:57:05,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:57:05,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-24 01:57:05,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:57:05,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:57:05,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-24 01:57:05,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:57:13,063 INFO L124 PetriNetUnfolderBase]: 50181/66651 cut-off events. [2024-11-24 01:57:13,064 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-24 01:57:13,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130158 conditions, 66651 events. 50181/66651 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 483079 event pairs, 36482 based on Foata normal form. 2/28919 useless extension candidates. Maximal degree in co-relation 130108. Up to 62099 conditions per place. [2024-11-24 01:57:13,408 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 44 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-11-24 01:57:13,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 312 flow [2024-11-24 01:57:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:57:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:57:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-24 01:57:13,414 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-11-24 01:57:13,416 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 208 flow. Second operand 6 states and 190 transitions. [2024-11-24 01:57:13,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 312 flow [2024-11-24 01:57:13,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:57:13,420 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 224 flow [2024-11-24 01:57:13,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-11-24 01:57:13,422 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-11-24 01:57:13,422 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 224 flow [2024-11-24 01:57:13,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:57:13,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:57:13,423 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 01:57:13,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:57:13,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:13,624 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-24 01:57:13,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1890603972, now seen corresponding path program 1 times [2024-11-24 01:57:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:13,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598713098] [2024-11-24 01:57:13,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:13,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598713098] [2024-11-24 01:57:13,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598713098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:57:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168107963] [2024-11-24 01:57:13,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:13,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:13,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:13,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:13,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:57:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:14,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:57:14,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:14,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:57:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168107963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:57:14,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:57:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-24 01:57:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013174533] [2024-11-24 01:57:14,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:57:14,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:57:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:14,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:57:14,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:57:14,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-24 01:57:14,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 224 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-11-24 01:57:14,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:57:14,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-24 01:57:14,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:57:20,621 INFO L124 PetriNetUnfolderBase]: 50187/66675 cut-off events. [2024-11-24 01:57:20,621 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-24 01:57:20,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130252 conditions, 66675 events. 50187/66675 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 482875 event pairs, 36482 based on Foata normal form. 6/29097 useless extension candidates. Maximal degree in co-relation 130110. Up to 62110 conditions per place. [2024-11-24 01:57:20,971 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 49 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-11-24 01:57:20,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 486 flow [2024-11-24 01:57:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:57:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 01:57:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2024-11-24 01:57:20,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-11-24 01:57:20,974 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 224 flow. Second operand 10 states and 300 transitions. [2024-11-24 01:57:20,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 486 flow [2024-11-24 01:57:20,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-24 01:57:20,977 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 364 flow [2024-11-24 01:57:20,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-24 01:57:20,978 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-11-24 01:57:20,979 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 364 flow [2024-11-24 01:57:20,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-11-24 01:57:20,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:57:20,979 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:20,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:57:21,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f8bfe1-8f9b-4685-9fd6-c16737a7230b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:21,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-24 01:57:21,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1263953769, now seen corresponding path program 1 times [2024-11-24 01:57:21,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887944017] [2024-11-24 01:57:21,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:21,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887944017] [2024-11-24 01:57:21,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887944017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:21,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:21,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:57:21,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125525252] [2024-11-24 01:57:21,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:21,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:57:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:21,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:57:21,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:57:21,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-24 01:57:21,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-24 01:57:21,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:57:21,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-24 01:57:21,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand