./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1 --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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:06:21,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:06:21,816 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 11:06:21,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:06:21,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:06:21,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:06:21,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:06:21,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:06:21,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:06:21,842 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:06:21,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:06:21,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:06:21,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:06:21,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:06:21,843 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:06:21,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:06:21,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:06:21,843 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:06:21,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:06:21,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:06:21,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:06:21,844 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:06:21,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:06:21,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:06:21,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:06:21,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:06:21,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:06:21,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:06:21,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:06:21,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:06:21,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:06:21,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:06:21,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:06:21,846 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:06:21,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:06:21,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:06:21,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:06:21,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:06:21,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:06:21,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:06:21,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:06:21,846 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_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1 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 -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2024-12-02 11:06:22,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:06:22,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:06:22,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:06:22,067 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:06:22,068 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:06:22,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-12-02 11:06:24,721 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/data/4d83c7480/6094eca6b15e47018d62f3a51959632b/FLAG6ae4b0a91 [2024-12-02 11:06:24,897 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:06:24,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-12-02 11:06:24,904 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/data/4d83c7480/6094eca6b15e47018d62f3a51959632b/FLAG6ae4b0a91 [2024-12-02 11:06:25,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/data/4d83c7480/6094eca6b15e47018d62f3a51959632b [2024-12-02 11:06:25,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:06:25,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:06:25,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:06:25,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:06:25,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:06:25,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5544004d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25, skipping insertion in model container [2024-12-02 11:06:25,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:06:25,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:06:25,481 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:06:25,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:06:25,522 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:06:25,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25 WrapperNode [2024-12-02 11:06:25,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:06:25,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:06:25,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:06:25,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:06:25,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,568 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 487 [2024-12-02 11:06:25,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:06:25,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:06:25,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:06:25,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:06:25,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,602 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-12-02 11:06:25,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,614 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:06:25,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:06:25,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:06:25,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:06:25,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (1/1) ... [2024-12-02 11:06:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:06:25,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:06:25,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:06:25,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:06:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:06:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 11:06:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 11:06:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 11:06:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 11:06:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 11:06:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 11:06:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 11:06:25,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 11:06:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:06:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:06:25,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:06:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:06:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 11:06:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 11:06:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 11:06:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:06:25,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:06:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:06:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:06:25,700 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 11:06:25,823 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:06:25,825 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:06:26,481 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 11:06:26,482 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:06:27,020 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:06:27,020 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-12-02 11:06:27,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:06:27 BoogieIcfgContainer [2024-12-02 11:06:27,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:06:27,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:06:27,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:06:27,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:06:27,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:06:25" (1/3) ... [2024-12-02 11:06:27,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec449f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:06:27, skipping insertion in model container [2024-12-02 11:06:27,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:25" (2/3) ... [2024-12-02 11:06:27,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec449f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:06:27, skipping insertion in model container [2024-12-02 11:06:27,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:06:27" (3/3) ... [2024-12-02 11:06:27,030 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2024-12-02 11:06:27,046 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:06:27,047 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-commit-2.wvr.c that has 5 procedures, 91 locations, 1 initial locations, 8 loop locations, and 32 error locations. [2024-12-02 11:06:27,047 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 11:06:27,195 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 11:06:27,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 102 transitions, 232 flow [2024-12-02 11:06:27,279 INFO L124 PetriNetUnfolderBase]: 12/98 cut-off events. [2024-12-02 11:06:27,281 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 11:06:27,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 98 events. 12/98 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 323 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2024-12-02 11:06:27,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 102 transitions, 232 flow [2024-12-02 11:06:27,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 96 transitions, 213 flow [2024-12-02 11:06:27,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:06:27,309 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;@21097265, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:06:27,309 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-12-02 11:06:27,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:06:27,314 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 11:06:27,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:06:27,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:06:27,315 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 11:06:27,315 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:06:27,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:06:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1470300, now seen corresponding path program 1 times [2024-12-02 11:06:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:06:27,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16652720] [2024-12-02 11:06:27,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:27,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:06:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:06:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:06:27,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:06:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16652720] [2024-12-02 11:06:27,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16652720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:06:27,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:06:27,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:06:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113427836] [2024-12-02 11:06:27,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:06:27,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:06:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:06:27,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:06:27,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:06:27,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2024-12-02 11:06:27,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:06:27,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:06:27,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2024-12-02 11:06:27,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:06:37,803 INFO L124 PetriNetUnfolderBase]: 97521/126253 cut-off events. [2024-12-02 11:06:37,803 INFO L125 PetriNetUnfolderBase]: For 3722/3722 co-relation queries the response was YES. [2024-12-02 11:06:37,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256314 conditions, 126253 events. 97521/126253 cut-off events. For 3722/3722 co-relation queries the response was YES. Maximal size of possible extension queue 3969. Compared 733884 event pairs, 86703 based on Foata normal form. 4/87293 useless extension candidates. Maximal degree in co-relation 249057. Up to 126130 conditions per place. [2024-12-02 11:06:38,340 INFO L140 encePairwiseOnDemand]: 65/102 looper letters, 71 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-12-02 11:06:38,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 373 flow [2024-12-02 11:06:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:06:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:06:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-12-02 11:06:38,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-12-02 11:06:38,355 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 213 flow. Second operand 4 states and 156 transitions. [2024-12-02 11:06:38,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 373 flow [2024-12-02 11:06:38,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 360 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-12-02 11:06:38,504 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 284 flow [2024-12-02 11:06:38,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2024-12-02 11:06:38,509 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -13 predicate places. [2024-12-02 11:06:38,509 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 284 flow [2024-12-02 11:06:38,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:06:38,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:06:38,509 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 11:06:38,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:06:38,510 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:06:38,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:06:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash 853520016, now seen corresponding path program 1 times [2024-12-02 11:06:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:06:38,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703582367] [2024-12-02 11:06:38,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:38,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:06:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:06:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:06:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:06:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703582367] [2024-12-02 11:06:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703582367] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:06:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381501407] [2024-12-02 11:06:38,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:38,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:06:38,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:06:38,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:06:38,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:06:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:06:38,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 11:06:38,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:06:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:06:38,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:06:38,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381501407] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:06:38,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:06:38,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 11:06:38,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341298170] [2024-12-02 11:06:38,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:06:38,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:06:38,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:06:38,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:06:38,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:06:38,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2024-12-02 11:06:38,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-12-02 11:06:38,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:06:38,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2024-12-02 11:06:38,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:06:47,563 INFO L124 PetriNetUnfolderBase]: 97521/126249 cut-off events. [2024-12-02 11:06:47,563 INFO L125 PetriNetUnfolderBase]: For 720/720 co-relation queries the response was YES. [2024-12-02 11:06:47,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255357 conditions, 126249 events. 97521/126249 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 3969. Compared 733815 event pairs, 86703 based on Foata normal form. 4/87296 useless extension candidates. Maximal degree in co-relation 255261. Up to 126110 conditions per place. [2024-12-02 11:06:48,019 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 58 selfloop transitions, 22 changer transitions 0/88 dead transitions. [2024-12-02 11:06:48,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 428 flow [2024-12-02 11:06:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:06:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 11:06:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-12-02 11:06:48,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2549019607843137 [2024-12-02 11:06:48,021 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 284 flow. Second operand 6 states and 156 transitions. [2024-12-02 11:06:48,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 428 flow [2024-12-02 11:06:48,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 428 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 11:06:48,024 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 312 flow [2024-12-02 11:06:48,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2024-12-02 11:06:48,024 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -12 predicate places. [2024-12-02 11:06:48,024 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 312 flow [2024-12-02 11:06:48,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-12-02 11:06:48,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:06:48,025 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 11:06:48,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:06:48,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:06:48,225 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:06:48,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:06:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 689318217, now seen corresponding path program 1 times [2024-12-02 11:06:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:06:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716887391] [2024-12-02 11:06:48,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:06:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:06:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:06:48,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:06:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716887391] [2024-12-02 11:06:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716887391] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:06:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099239369] [2024-12-02 11:06:48,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:48,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:06:48,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:06:48,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:06:48,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:06:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:06:48,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 11:06:48,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:06:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:06:48,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:06:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:06:48,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099239369] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:06:48,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:06:48,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-12-02 11:06:48,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881434098] [2024-12-02 11:06:48,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:06:48,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 11:06:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:06:48,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:06:48,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:06:48,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2024-12-02 11:06:48,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 312 flow. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 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) [2024-12-02 11:06:48,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:06:48,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2024-12-02 11:06:48,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:06:57,399 INFO L124 PetriNetUnfolderBase]: 97533/126297 cut-off events. [2024-12-02 11:06:57,399 INFO L125 PetriNetUnfolderBase]: For 808/808 co-relation queries the response was YES. [2024-12-02 11:06:57,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255545 conditions, 126297 events. 97533/126297 cut-off events. For 808/808 co-relation queries the response was YES. Maximal size of possible extension queue 3969. Compared 734880 event pairs, 86703 based on Foata normal form. 12/87353 useless extension candidates. Maximal degree in co-relation 255263. Up to 126129 conditions per place. [2024-12-02 11:06:57,882 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 67 selfloop transitions, 49 changer transitions 0/124 dead transitions. [2024-12-02 11:06:57,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 124 transitions, 778 flow [2024-12-02 11:06:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:06:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 11:06:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-12-02 11:06:57,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24313725490196078 [2024-12-02 11:06:57,885 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 312 flow. Second operand 10 states and 248 transitions. [2024-12-02 11:06:57,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 124 transitions, 778 flow [2024-12-02 11:06:57,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 124 transitions, 670 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-12-02 11:06:57,889 INFO L231 Difference]: Finished difference. Result has 92 places, 124 transitions, 602 flow [2024-12-02 11:06:57,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=602, PETRI_PLACES=92, PETRI_TRANSITIONS=124} [2024-12-02 11:06:57,891 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -5 predicate places. [2024-12-02 11:06:57,891 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 124 transitions, 602 flow [2024-12-02 11:06:57,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 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) [2024-12-02 11:06:57,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:06:57,891 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:06:57,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:06:58,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:06:58,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:06:58,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:06:58,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1569643626, now seen corresponding path program 1 times [2024-12-02 11:06:58,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:06:58,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816713222] [2024-12-02 11:06:58,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:58,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:06:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:06:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:06:58,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:06:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816713222] [2024-12-02 11:06:58,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816713222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:06:58,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:06:58,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 11:06:58,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130845253] [2024-12-02 11:06:58,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:06:58,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:06:58,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:06:58,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:06:58,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:06:58,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 102 [2024-12-02 11:06:58,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 124 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-12-02 11:06:58,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:06:58,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 102 [2024-12-02 11:06:58,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:07:08,071 INFO L124 PetriNetUnfolderBase]: 113582/147270 cut-off events. [2024-12-02 11:07:08,071 INFO L125 PetriNetUnfolderBase]: For 1274/1274 co-relation queries the response was YES. [2024-12-02 11:07:08,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298187 conditions, 147270 events. 113582/147270 cut-off events. For 1274/1274 co-relation queries the response was YES. Maximal size of possible extension queue 4394. Compared 875166 event pairs, 29367 based on Foata normal form. 914/103166 useless extension candidates. Maximal degree in co-relation 298058. Up to 128199 conditions per place. [2024-12-02 11:07:08,634 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 142 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2024-12-02 11:07:08,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 158 transitions, 968 flow [2024-12-02 11:07:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:07:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:07:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-12-02 11:07:08,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-12-02 11:07:08,635 INFO L175 Difference]: Start difference. First operand has 92 places, 124 transitions, 602 flow. Second operand 3 states and 160 transitions. [2024-12-02 11:07:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 158 transitions, 968 flow [2024-12-02 11:07:08,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 158 transitions, 918 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-12-02 11:07:08,640 INFO L231 Difference]: Finished difference. Result has 93 places, 127 transitions, 580 flow [2024-12-02 11:07:08,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=93, PETRI_TRANSITIONS=127} [2024-12-02 11:07:08,641 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -4 predicate places. [2024-12-02 11:07:08,641 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 127 transitions, 580 flow [2024-12-02 11:07:08,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-12-02 11:07:08,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:08,641 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:08,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:07:08,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:07:08,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:08,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1720815432, now seen corresponding path program 1 times [2024-12-02 11:07:08,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:08,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999684891] [2024-12-02 11:07:08,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:08,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:08,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999684891] [2024-12-02 11:07:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999684891] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:07:08,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:07:08,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:07:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073892941] [2024-12-02 11:07:08,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:07:08,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:07:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:08,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:07:08,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:07:08,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 102 [2024-12-02 11:07:08,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 127 transitions, 580 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-12-02 11:07:08,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:07:08,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 102 [2024-12-02 11:07:08,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:07:19,910 INFO L124 PetriNetUnfolderBase]: 123445/160399 cut-off events. [2024-12-02 11:07:19,910 INFO L125 PetriNetUnfolderBase]: For 8585/8585 co-relation queries the response was YES. [2024-12-02 11:07:20,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341028 conditions, 160399 events. 123445/160399 cut-off events. For 8585/8585 co-relation queries the response was YES. Maximal size of possible extension queue 3527. Compared 941377 event pairs, 40624 based on Foata normal form. 2106/124494 useless extension candidates. Maximal degree in co-relation 340904. Up to 116915 conditions per place. [2024-12-02 11:07:20,543 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 146 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2024-12-02 11:07:20,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 160 transitions, 952 flow [2024-12-02 11:07:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:07:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:07:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-12-02 11:07:20,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-12-02 11:07:20,544 INFO L175 Difference]: Start difference. First operand has 93 places, 127 transitions, 580 flow. Second operand 3 states and 160 transitions. [2024-12-02 11:07:20,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 160 transitions, 952 flow [2024-12-02 11:07:20,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 160 transitions, 949 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 11:07:20,550 INFO L231 Difference]: Finished difference. Result has 95 places, 127 transitions, 586 flow [2024-12-02 11:07:20,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=95, PETRI_TRANSITIONS=127} [2024-12-02 11:07:20,551 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -2 predicate places. [2024-12-02 11:07:20,551 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 127 transitions, 586 flow [2024-12-02 11:07:20,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-12-02 11:07:20,551 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:20,551 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:20,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:07:20,551 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:07:20,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1654577677, now seen corresponding path program 1 times [2024-12-02 11:07:20,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:20,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357072134] [2024-12-02 11:07:20,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:20,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:20,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357072134] [2024-12-02 11:07:20,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357072134] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:07:20,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:07:20,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:07:20,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843712500] [2024-12-02 11:07:20,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:07:20,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:07:20,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:20,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:07:20,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:07:20,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 102 [2024-12-02 11:07:20,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 127 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-12-02 11:07:20,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:07:20,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 102 [2024-12-02 11:07:20,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:07:29,083 INFO L124 PetriNetUnfolderBase]: 95453/123919 cut-off events. [2024-12-02 11:07:29,083 INFO L125 PetriNetUnfolderBase]: For 8626/8626 co-relation queries the response was YES. [2024-12-02 11:07:29,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267255 conditions, 123919 events. 95453/123919 cut-off events. For 8626/8626 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 695978 event pairs, 28230 based on Foata normal form. 1362/96454 useless extension candidates. Maximal degree in co-relation 267130. Up to 96857 conditions per place. [2024-12-02 11:07:29,601 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 145 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2024-12-02 11:07:29,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 159 transitions, 957 flow [2024-12-02 11:07:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:07:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:07:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-12-02 11:07:29,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-12-02 11:07:29,603 INFO L175 Difference]: Start difference. First operand has 95 places, 127 transitions, 586 flow. Second operand 3 states and 160 transitions. [2024-12-02 11:07:29,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 159 transitions, 957 flow [2024-12-02 11:07:29,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 955 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 11:07:29,607 INFO L231 Difference]: Finished difference. Result has 97 places, 127 transitions, 594 flow [2024-12-02 11:07:29,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=97, PETRI_TRANSITIONS=127} [2024-12-02 11:07:29,607 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 0 predicate places. [2024-12-02 11:07:29,607 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 127 transitions, 594 flow [2024-12-02 11:07:29,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-12-02 11:07:29,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:29,608 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-12-02 11:07:29,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:07:29,608 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:07:29,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:29,608 INFO L85 PathProgramCache]: Analyzing trace with hash 685669117, now seen corresponding path program 2 times [2024-12-02 11:07:29,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:29,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928234304] [2024-12-02 11:07:29,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:07:29,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:29,625 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 11:07:29,625 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:07:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 11:07:29,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928234304] [2024-12-02 11:07:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928234304] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:07:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957488705] [2024-12-02 11:07:29,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:07:29,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:07:29,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:07:29,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:07:29,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:07:29,763 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 11:07:29,763 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:07:29,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:07:29,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:07:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 11:07:29,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:07:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 11:07:29,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957488705] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:07:29,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:07:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 11:07:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474705854] [2024-12-02 11:07:29,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:07:29,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:07:29,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:29,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:07:29,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:07:29,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2024-12-02 11:07:29,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 127 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-12-02 11:07:29,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:07:29,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2024-12-02 11:07:29,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:07:38,763 INFO L124 PetriNetUnfolderBase]: 95453/123915 cut-off events. [2024-12-02 11:07:38,763 INFO L125 PetriNetUnfolderBase]: For 11659/11659 co-relation queries the response was YES. [2024-12-02 11:07:39,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274341 conditions, 123915 events. 95453/123915 cut-off events. For 11659/11659 co-relation queries the response was YES. Maximal size of possible extension queue 3097. Compared 706327 event pairs, 85923 based on Foata normal form. 4/97108 useless extension candidates. Maximal degree in co-relation 274235. Up to 123787 conditions per place. [2024-12-02 11:07:39,294 INFO L140 encePairwiseOnDemand]: 88/102 looper letters, 69 selfloop transitions, 46 changer transitions 0/123 dead transitions. [2024-12-02 11:07:39,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 123 transitions, 784 flow [2024-12-02 11:07:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:07:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 11:07:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-12-02 11:07:39,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28431372549019607 [2024-12-02 11:07:39,296 INFO L175 Difference]: Start difference. First operand has 97 places, 127 transitions, 594 flow. Second operand 4 states and 116 transitions. [2024-12-02 11:07:39,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 123 transitions, 784 flow [2024-12-02 11:07:39,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 742 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-12-02 11:07:39,301 INFO L231 Difference]: Finished difference. Result has 91 places, 123 transitions, 604 flow [2024-12-02 11:07:39,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=604, PETRI_PLACES=91, PETRI_TRANSITIONS=123} [2024-12-02 11:07:39,302 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -6 predicate places. [2024-12-02 11:07:39,302 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 123 transitions, 604 flow [2024-12-02 11:07:39,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-12-02 11:07:39,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:39,303 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:39,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:07:39,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 11:07:39,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:07:39,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:39,503 INFO L85 PathProgramCache]: Analyzing trace with hash 173855041, now seen corresponding path program 1 times [2024-12-02 11:07:39,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:39,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941511671] [2024-12-02 11:07:39,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:39,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:39,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:39,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941511671] [2024-12-02 11:07:39,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941511671] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:07:39,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:07:39,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:07:39,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853276604] [2024-12-02 11:07:39,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:07:39,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:07:39,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:39,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:07:39,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:07:39,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 102 [2024-12-02 11:07:39,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 123 transitions, 604 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:07:39,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:07:39,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 102 [2024-12-02 11:07:39,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:07:49,195 INFO L124 PetriNetUnfolderBase]: 99875/130161 cut-off events. [2024-12-02 11:07:49,195 INFO L125 PetriNetUnfolderBase]: For 11877/11877 co-relation queries the response was YES. [2024-12-02 11:07:49,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286453 conditions, 130161 events. 99875/130161 cut-off events. For 11877/11877 co-relation queries the response was YES. Maximal size of possible extension queue 2938. Compared 741145 event pairs, 90331 based on Foata normal form. 562/102650 useless extension candidates. Maximal degree in co-relation 273345. Up to 123840 conditions per place. [2024-12-02 11:07:49,748 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 112 selfloop transitions, 2 changer transitions 73/195 dead transitions. [2024-12-02 11:07:49,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 195 transitions, 1365 flow [2024-12-02 11:07:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:07:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 11:07:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-12-02 11:07:49,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4196078431372549 [2024-12-02 11:07:49,750 INFO L175 Difference]: Start difference. First operand has 91 places, 123 transitions, 604 flow. Second operand 5 states and 214 transitions. [2024-12-02 11:07:49,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 195 transitions, 1365 flow [2024-12-02 11:07:49,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 195 transitions, 1203 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 11:07:49,755 INFO L231 Difference]: Finished difference. Result has 94 places, 122 transitions, 540 flow [2024-12-02 11:07:49,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=540, PETRI_PLACES=94, PETRI_TRANSITIONS=122} [2024-12-02 11:07:49,756 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2024-12-02 11:07:49,756 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 540 flow [2024-12-02 11:07:49,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:07:49,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:49,756 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:49,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:07:49,756 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 11:07:49,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash -606148979, now seen corresponding path program 1 times [2024-12-02 11:07:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:49,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918823388] [2024-12-02 11:07:49,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:49,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:49,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:49,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918823388] [2024-12-02 11:07:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918823388] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:07:49,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689280353] [2024-12-02 11:07:49,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:49,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:07:49,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:07:49,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:07:49,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93214e43-a86d-43f3-ae12-be41dac38299/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:07:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:49,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:07:49,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:07:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:07:50,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:07:50,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689280353] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:07:50,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:07:50,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-12-02 11:07:50,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268264401] [2024-12-02 11:07:50,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:07:50,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:07:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:50,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:07:50,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:07:50,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 102 [2024-12-02 11:07:50,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 122 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-12-02 11:07:50,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:07:50,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 102 [2024-12-02 11:07:50,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand