./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.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_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/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_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/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_75f7c875-708f-4b0a-9b0d-4a57126966d2/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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:36:14,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:36:14,590 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 06:36:14,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:36:14,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:36:14,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:36:14,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:36:14,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:36:14,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:36:14,619 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:36:14,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:36:14,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:36:14,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:36:14,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:36:14,619 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:36:14,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 06:36:14,620 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:36:14,621 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:36:14,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:36:14,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:36:14,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:36:14,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:36:14,623 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_75f7c875-708f-4b0a-9b0d-4a57126966d2/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 -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2024-12-02 06:36:14,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:36:14,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:36:14,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:36:14,891 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:36:14,892 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:36:14,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-12-02 06:36:17,970 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/data/40a2602cc/1caaf8e38b324c5998c8b663cf869dd6/FLAGb5e372b08 [2024-12-02 06:36:18,198 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:36:18,199 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-12-02 06:36:18,207 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/data/40a2602cc/1caaf8e38b324c5998c8b663cf869dd6/FLAGb5e372b08 [2024-12-02 06:36:18,223 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/data/40a2602cc/1caaf8e38b324c5998c8b663cf869dd6 [2024-12-02 06:36:18,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:36:18,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:36:18,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:36:18,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:36:18,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:36:18,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f8d198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18, skipping insertion in model container [2024-12-02 06:36:18,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,258 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:36:18,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:36:18,469 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:36:18,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:36:18,527 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:36:18,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18 WrapperNode [2024-12-02 06:36:18,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:36:18,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:36:18,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:36:18,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:36:18,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,582 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 487 [2024-12-02 06:36:18,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:36:18,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:36:18,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:36:18,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:36:18,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,620 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 06:36:18,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,635 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:36:18,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:36:18,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:36:18,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:36:18,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (1/1) ... [2024-12-02 06:36:18,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:36:18,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:18,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:36:18,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:36:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:36:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 06:36:18,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 06:36:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 06:36:18,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 06:36:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 06:36:18,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 06:36:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 06:36:18,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:36:18,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 06:36:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 06:36:18,732 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 06:36:18,866 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:36:18,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:36:19,531 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 06:36:19,531 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:36:20,109 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:36:20,109 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-12-02 06:36:20,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:36:20 BoogieIcfgContainer [2024-12-02 06:36:20,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:36:20,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:36:20,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:36:20,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:36:20,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:36:18" (1/3) ... [2024-12-02 06:36:20,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f56a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:36:20, skipping insertion in model container [2024-12-02 06:36:20,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:36:18" (2/3) ... [2024-12-02 06:36:20,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f56a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:36:20, skipping insertion in model container [2024-12-02 06:36:20,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:36:20" (3/3) ... [2024-12-02 06:36:20,120 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-12-02 06:36:20,139 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:36:20,141 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-2.wvr-bad.c that has 5 procedures, 99 locations, 1 initial locations, 8 loop locations, and 32 error locations. [2024-12-02 06:36:20,141 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 06:36:20,248 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 06:36:20,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 272 flow [2024-12-02 06:36:20,342 INFO L124 PetriNetUnfolderBase]: 24/118 cut-off events. [2024-12-02 06:36:20,344 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 06:36:20,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 118 events. 24/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 427 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2024-12-02 06:36:20,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 122 transitions, 272 flow [2024-12-02 06:36:20,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 116 transitions, 253 flow [2024-12-02 06:36:20,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:36:20,374 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;@189e7421, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:36:20,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-12-02 06:36:20,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:36:20,379 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 06:36:20,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:36:20,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:36:20,380 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 06:36:20,380 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 06:36:20,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:20,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1453552, now seen corresponding path program 1 times [2024-12-02 06:36:20,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:20,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079393842] [2024-12-02 06:36:20,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:20,644 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 06:36:20,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079393842] [2024-12-02 06:36:20,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079393842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:36:20,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:36:20,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:36:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788687081] [2024-12-02 06:36:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:36:20,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:36:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:20,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:36:20,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:36:20,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2024-12-02 06:36:20,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 116 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 06:36:20,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:36:20,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2024-12-02 06:36:20,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:36:25,793 INFO L124 PetriNetUnfolderBase]: 40111/53160 cut-off events. [2024-12-02 06:36:25,793 INFO L125 PetriNetUnfolderBase]: For 1371/1371 co-relation queries the response was YES. [2024-12-02 06:36:25,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102889 conditions, 53160 events. 40111/53160 cut-off events. For 1371/1371 co-relation queries the response was YES. Maximal size of possible extension queue 3582. Compared 340298 event pairs, 26584 based on Foata normal form. 4/33300 useless extension candidates. Maximal degree in co-relation 99016. Up to 48058 conditions per place. [2024-12-02 06:36:26,288 INFO L140 encePairwiseOnDemand]: 85/122 looper letters, 71 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-12-02 06:36:26,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 112 transitions, 413 flow [2024-12-02 06:36:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:36:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:36:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2024-12-02 06:36:26,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48360655737704916 [2024-12-02 06:36:26,304 INFO L175 Difference]: Start difference. First operand has 105 places, 116 transitions, 253 flow. Second operand 4 states and 236 transitions. [2024-12-02 06:36:26,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 112 transitions, 413 flow [2024-12-02 06:36:26,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 112 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-12-02 06:36:26,459 INFO L231 Difference]: Finished difference. Result has 92 places, 112 transitions, 324 flow [2024-12-02 06:36:26,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=92, PETRI_TRANSITIONS=112} [2024-12-02 06:36:26,465 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -13 predicate places. [2024-12-02 06:36:26,465 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 112 transitions, 324 flow [2024-12-02 06:36:26,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 06:36:26,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:36:26,465 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 06:36:26,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:36:26,466 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 06:36:26,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 354570327, now seen corresponding path program 1 times [2024-12-02 06:36:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156125957] [2024-12-02 06:36:26,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:26,639 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 06:36:26,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:26,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156125957] [2024-12-02 06:36:26,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156125957] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:26,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135257402] [2024-12-02 06:36:26,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:26,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:26,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:26,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:26,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:36:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:26,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:36:26,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:26,815 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 06:36:26,816 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:36:26,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135257402] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:36:26,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:36:26,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:36:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164819710] [2024-12-02 06:36:26,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:36:26,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:36:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:26,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:36:26,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:36:26,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2024-12-02 06:36:26,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 112 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 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 06:36:26,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:36:26,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2024-12-02 06:36:26,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:36:30,849 INFO L124 PetriNetUnfolderBase]: 40111/53156 cut-off events. [2024-12-02 06:36:30,849 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-12-02 06:36:30,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102434 conditions, 53156 events. 40111/53156 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 3582. Compared 340100 event pairs, 26584 based on Foata normal form. 4/33303 useless extension candidates. Maximal degree in co-relation 102338. Up to 48038 conditions per place. [2024-12-02 06:36:31,217 INFO L140 encePairwiseOnDemand]: 105/122 looper letters, 58 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2024-12-02 06:36:31,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 108 transitions, 468 flow [2024-12-02 06:36:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:36:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:36:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 276 transitions. [2024-12-02 06:36:31,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3770491803278688 [2024-12-02 06:36:31,221 INFO L175 Difference]: Start difference. First operand has 92 places, 112 transitions, 324 flow. Second operand 6 states and 276 transitions. [2024-12-02 06:36:31,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 108 transitions, 468 flow [2024-12-02 06:36:31,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 108 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 06:36:31,226 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 352 flow [2024-12-02 06:36:31,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2024-12-02 06:36:31,227 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -12 predicate places. [2024-12-02 06:36:31,227 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 352 flow [2024-12-02 06:36:31,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 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 06:36:31,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:36:31,227 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 06:36:31,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:36:31,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 06:36:31,428 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 06:36:31,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:31,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1893220266, now seen corresponding path program 1 times [2024-12-02 06:36:31,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:31,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368476354] [2024-12-02 06:36:31,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:31,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:31,543 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 06:36:31,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:31,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368476354] [2024-12-02 06:36:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368476354] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:36:31,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906163044] [2024-12-02 06:36:31,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:31,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:36:31,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:36:31,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:36:31,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:36:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:31,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:36:31,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:36:31,662 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 06:36:31,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:36:31,705 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 06:36:31,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906163044] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:36:31,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:36:31,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-12-02 06:36:31,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113126978] [2024-12-02 06:36:31,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:36:31,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 06:36:31,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:31,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 06:36:31,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 06:36:31,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2024-12-02 06:36:31,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 33.083333333333336) internal successors, (397), 12 states have internal predecessors, (397), 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 06:36:31,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:36:31,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2024-12-02 06:36:31,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:36:36,317 INFO L124 PetriNetUnfolderBase]: 40123/53204 cut-off events. [2024-12-02 06:36:36,317 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-12-02 06:36:36,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102622 conditions, 53204 events. 40123/53204 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 3581. Compared 340548 event pairs, 26584 based on Foata normal form. 12/33360 useless extension candidates. Maximal degree in co-relation 102340. Up to 48057 conditions per place. [2024-12-02 06:36:36,616 INFO L140 encePairwiseOnDemand]: 105/122 looper letters, 67 selfloop transitions, 49 changer transitions 0/144 dead transitions. [2024-12-02 06:36:36,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 144 transitions, 818 flow [2024-12-02 06:36:36,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:36:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 06:36:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 448 transitions. [2024-12-02 06:36:36,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36721311475409835 [2024-12-02 06:36:36,619 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 352 flow. Second operand 10 states and 448 transitions. [2024-12-02 06:36:36,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 144 transitions, 818 flow [2024-12-02 06:36:36,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 144 transitions, 710 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-12-02 06:36:36,626 INFO L231 Difference]: Finished difference. Result has 100 places, 144 transitions, 642 flow [2024-12-02 06:36:36,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=642, PETRI_PLACES=100, PETRI_TRANSITIONS=144} [2024-12-02 06:36:36,627 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -5 predicate places. [2024-12-02 06:36:36,628 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 144 transitions, 642 flow [2024-12-02 06:36:36,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.083333333333336) internal successors, (397), 12 states have internal predecessors, (397), 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 06:36:36,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:36:36,628 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:36,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:36:36,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 06:36:36,829 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 06:36:36,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:36,829 INFO L85 PathProgramCache]: Analyzing trace with hash -870578477, now seen corresponding path program 1 times [2024-12-02 06:36:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:36,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209549740] [2024-12-02 06:36:36,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:36,956 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 06:36:36,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:36,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209549740] [2024-12-02 06:36:36,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209549740] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:36:36,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:36:36,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 06:36:36,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946384457] [2024-12-02 06:36:36,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:36:36,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:36:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:36,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:36:36,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:36:36,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 122 [2024-12-02 06:36:36,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 144 transitions, 642 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 06:36:36,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:36:36,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 122 [2024-12-02 06:36:36,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:36:43,541 INFO L124 PetriNetUnfolderBase]: 68325/91021 cut-off events. [2024-12-02 06:36:43,541 INFO L125 PetriNetUnfolderBase]: For 798/798 co-relation queries the response was YES. [2024-12-02 06:36:43,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175336 conditions, 91021 events. 68325/91021 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 5146. Compared 610226 event pairs, 21403 based on Foata normal form. 2363/60319 useless extension candidates. Maximal degree in co-relation 175207. Up to 50735 conditions per place. [2024-12-02 06:36:44,020 INFO L140 encePairwiseOnDemand]: 112/122 looper letters, 150 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2024-12-02 06:36:44,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 186 transitions, 1040 flow [2024-12-02 06:36:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:36:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:36:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2024-12-02 06:36:44,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6338797814207651 [2024-12-02 06:36:44,021 INFO L175 Difference]: Start difference. First operand has 100 places, 144 transitions, 642 flow. Second operand 3 states and 232 transitions. [2024-12-02 06:36:44,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 186 transitions, 1040 flow [2024-12-02 06:36:44,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 990 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-12-02 06:36:44,026 INFO L231 Difference]: Finished difference. Result has 101 places, 147 transitions, 628 flow [2024-12-02 06:36:44,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=628, PETRI_PLACES=101, PETRI_TRANSITIONS=147} [2024-12-02 06:36:44,027 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -4 predicate places. [2024-12-02 06:36:44,027 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 147 transitions, 628 flow [2024-12-02 06:36:44,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 06:36:44,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:36:44,027 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:44,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:36:44,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 06:36:44,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1218126448, now seen corresponding path program 1 times [2024-12-02 06:36:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:44,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860100119] [2024-12-02 06:36:44,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:44,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:44,094 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 06:36:44,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:44,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860100119] [2024-12-02 06:36:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860100119] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:36:44,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:36:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:36:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790668005] [2024-12-02 06:36:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:36:44,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:36:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:44,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:36:44,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:36:44,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 122 [2024-12-02 06:36:44,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 147 transitions, 628 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 06:36:44,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:36:44,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 122 [2024-12-02 06:36:44,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:36:53,826 INFO L124 PetriNetUnfolderBase]: 97652/129400 cut-off events. [2024-12-02 06:36:53,827 INFO L125 PetriNetUnfolderBase]: For 9840/10008 co-relation queries the response was YES. [2024-12-02 06:36:54,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269250 conditions, 129400 events. 97652/129400 cut-off events. For 9840/10008 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 819741 event pairs, 31944 based on Foata normal form. 0/98202 useless extension candidates. Maximal degree in co-relation 269126. Up to 66408 conditions per place. [2024-12-02 06:36:54,672 INFO L140 encePairwiseOnDemand]: 117/122 looper letters, 155 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2024-12-02 06:36:54,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 184 transitions, 1032 flow [2024-12-02 06:36:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:36:54,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:36:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2024-12-02 06:36:54,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2024-12-02 06:36:54,674 INFO L175 Difference]: Start difference. First operand has 101 places, 147 transitions, 628 flow. Second operand 3 states and 208 transitions. [2024-12-02 06:36:54,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 184 transitions, 1032 flow [2024-12-02 06:36:54,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 184 transitions, 1028 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 06:36:54,681 INFO L231 Difference]: Finished difference. Result has 104 places, 148 transitions, 646 flow [2024-12-02 06:36:54,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=104, PETRI_TRANSITIONS=148} [2024-12-02 06:36:54,682 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2024-12-02 06:36:54,682 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 148 transitions, 646 flow [2024-12-02 06:36:54,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 06:36:54,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:36:54,682 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:54,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:36:54,683 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 06:36:54,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:54,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2111504145, now seen corresponding path program 1 times [2024-12-02 06:36:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036795389] [2024-12-02 06:36:54,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:54,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:54,809 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 06:36:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:54,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036795389] [2024-12-02 06:36:54,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036795389] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:36:54,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:36:54,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:36:54,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826755966] [2024-12-02 06:36:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:36:54,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:36:54,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:54,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:36:54,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:36:54,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 122 [2024-12-02 06:36:54,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 148 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 06:36:54,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:36:54,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 122 [2024-12-02 06:36:54,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:37:07,225 INFO L124 PetriNetUnfolderBase]: 117079/164154 cut-off events. [2024-12-02 06:37:07,225 INFO L125 PetriNetUnfolderBase]: For 27323/28107 co-relation queries the response was YES. [2024-12-02 06:37:07,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345429 conditions, 164154 events. 117079/164154 cut-off events. For 27323/28107 co-relation queries the response was YES. Maximal size of possible extension queue 4226. Compared 1192107 event pairs, 45684 based on Foata normal form. 2521/125246 useless extension candidates. Maximal degree in co-relation 345304. Up to 74282 conditions per place. [2024-12-02 06:37:08,475 INFO L140 encePairwiseOnDemand]: 118/122 looper letters, 159 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2024-12-02 06:37:08,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 194 transitions, 1092 flow [2024-12-02 06:37:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:37:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:37:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2024-12-02 06:37:08,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6338797814207651 [2024-12-02 06:37:08,477 INFO L175 Difference]: Start difference. First operand has 104 places, 148 transitions, 646 flow. Second operand 3 states and 232 transitions. [2024-12-02 06:37:08,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 194 transitions, 1092 flow [2024-12-02 06:37:08,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 194 transitions, 1080 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 06:37:08,507 INFO L231 Difference]: Finished difference. Result has 105 places, 149 transitions, 652 flow [2024-12-02 06:37:08,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=652, PETRI_PLACES=105, PETRI_TRANSITIONS=149} [2024-12-02 06:37:08,508 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 0 predicate places. [2024-12-02 06:37:08,508 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 149 transitions, 652 flow [2024-12-02 06:37:08,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 06:37:08,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:37:08,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:08,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:37:08,509 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 06:37:08,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1032121653, now seen corresponding path program 1 times [2024-12-02 06:37:08,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:08,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967727090] [2024-12-02 06:37:08,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:37:08,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:37:08,568 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 06:37:08,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:08,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967727090] [2024-12-02 06:37:08,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967727090] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:37:08,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:37:08,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:37:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962824196] [2024-12-02 06:37:08,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:37:08,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:37:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:08,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:37:08,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:37:08,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 122 [2024-12-02 06:37:08,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 149 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 06:37:08,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:37:08,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 122 [2024-12-02 06:37:08,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:37:26,973 INFO L124 PetriNetUnfolderBase]: 174922/236459 cut-off events. [2024-12-02 06:37:26,974 INFO L125 PetriNetUnfolderBase]: For 32252/33780 co-relation queries the response was YES. [2024-12-02 06:37:27,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500327 conditions, 236459 events. 174922/236459 cut-off events. For 32252/33780 co-relation queries the response was YES. Maximal size of possible extension queue 6291. Compared 1650012 event pairs, 82532 based on Foata normal form. 0/176796 useless extension candidates. Maximal degree in co-relation 500201. Up to 139151 conditions per place. [2024-12-02 06:37:28,415 INFO L140 encePairwiseOnDemand]: 117/122 looper letters, 157 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2024-12-02 06:37:28,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 191 transitions, 1083 flow [2024-12-02 06:37:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:37:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:37:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2024-12-02 06:37:28,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-12-02 06:37:28,417 INFO L175 Difference]: Start difference. First operand has 105 places, 149 transitions, 652 flow. Second operand 3 states and 222 transitions. [2024-12-02 06:37:28,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 191 transitions, 1083 flow [2024-12-02 06:37:28,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 191 transitions, 1081 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 06:37:28,429 INFO L231 Difference]: Finished difference. Result has 108 places, 149 transitions, 668 flow [2024-12-02 06:37:28,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=668, PETRI_PLACES=108, PETRI_TRANSITIONS=149} [2024-12-02 06:37:28,430 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 3 predicate places. [2024-12-02 06:37:28,430 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 149 transitions, 668 flow [2024-12-02 06:37:28,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 06:37:28,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:37:28,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:28,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:37:28,430 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 06:37:28,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash 255116956, now seen corresponding path program 1 times [2024-12-02 06:37:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:28,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686100387] [2024-12-02 06:37:28,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:37:28,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:37:28,513 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 06:37:28,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:28,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686100387] [2024-12-02 06:37:28,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686100387] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:37:28,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:37:28,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:37:28,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997922499] [2024-12-02 06:37:28,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:37:28,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:37:28,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:28,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:37:28,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:37:28,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 122 [2024-12-02 06:37:28,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 149 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 06:37:28,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:37:28,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 122 [2024-12-02 06:37:28,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:37:54,865 INFO L124 PetriNetUnfolderBase]: 251227/349800 cut-off events. [2024-12-02 06:37:54,865 INFO L125 PetriNetUnfolderBase]: For 112356/118968 co-relation queries the response was YES. [2024-12-02 06:37:55,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766323 conditions, 349800 events. 251227/349800 cut-off events. For 112356/118968 co-relation queries the response was YES. Maximal size of possible extension queue 9373. Compared 2684421 event pairs, 92450 based on Foata normal form. 5049/271665 useless extension candidates. Maximal degree in co-relation 766196. Up to 162679 conditions per place. [2024-12-02 06:37:57,288 INFO L140 encePairwiseOnDemand]: 118/122 looper letters, 158 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2024-12-02 06:37:57,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 194 transitions, 1121 flow [2024-12-02 06:37:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:37:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:37:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2024-12-02 06:37:57,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6284153005464481 [2024-12-02 06:37:57,290 INFO L175 Difference]: Start difference. First operand has 108 places, 149 transitions, 668 flow. Second operand 3 states and 230 transitions. [2024-12-02 06:37:57,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 194 transitions, 1121 flow [2024-12-02 06:37:57,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 194 transitions, 1109 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 06:37:57,350 INFO L231 Difference]: Finished difference. Result has 109 places, 150 transitions, 674 flow [2024-12-02 06:37:57,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=674, PETRI_PLACES=109, PETRI_TRANSITIONS=150} [2024-12-02 06:37:57,351 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 4 predicate places. [2024-12-02 06:37:57,351 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 150 transitions, 674 flow [2024-12-02 06:37:57,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 06:37:57,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:37:57,351 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:37:57,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:37:57,352 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 06:37:57,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:37:57,352 INFO L85 PathProgramCache]: Analyzing trace with hash -681306343, now seen corresponding path program 1 times [2024-12-02 06:37:57,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:37:57,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421615512] [2024-12-02 06:37:57,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:37:57,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:37:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:37:57,393 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 06:37:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:37:57,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421615512] [2024-12-02 06:37:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421615512] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:37:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:37:57,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:37:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604679513] [2024-12-02 06:37:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:37:57,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:37:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:37:57,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:37:57,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:37:57,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 122 [2024-12-02 06:37:57,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 150 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 06:37:57,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:37:57,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 122 [2024-12-02 06:37:57,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:38:30,353 INFO L124 PetriNetUnfolderBase]: 353341/470964 cut-off events. [2024-12-02 06:38:30,354 INFO L125 PetriNetUnfolderBase]: For 115634/126288 co-relation queries the response was YES. [2024-12-02 06:38:31,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030934 conditions, 470964 events. 353341/470964 cut-off events. For 115634/126288 co-relation queries the response was YES. Maximal size of possible extension queue 13068. Compared 3411836 event pairs, 168614 based on Foata normal form. 0/359268 useless extension candidates. Maximal degree in co-relation 1030806. Up to 271597 conditions per place. [2024-12-02 06:38:33,260 INFO L140 encePairwiseOnDemand]: 117/122 looper letters, 156 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2024-12-02 06:38:33,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 191 transitions, 1111 flow [2024-12-02 06:38:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:38:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:38:33,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2024-12-02 06:38:33,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6010928961748634 [2024-12-02 06:38:33,262 INFO L175 Difference]: Start difference. First operand has 109 places, 150 transitions, 674 flow. Second operand 3 states and 220 transitions. [2024-12-02 06:38:33,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 191 transitions, 1111 flow [2024-12-02 06:38:33,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 191 transitions, 1109 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 06:38:33,292 INFO L231 Difference]: Finished difference. Result has 112 places, 150 transitions, 690 flow [2024-12-02 06:38:33,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=690, PETRI_PLACES=112, PETRI_TRANSITIONS=150} [2024-12-02 06:38:33,293 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2024-12-02 06:38:33,293 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 150 transitions, 690 flow [2024-12-02 06:38:33,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 06:38:33,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:38:33,293 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-12-02 06:38:33,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:38:33,293 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 06:38:33,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:38:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1177644899, now seen corresponding path program 2 times [2024-12-02 06:38:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:38:33,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129952309] [2024-12-02 06:38:33,294 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:38:33,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:38:33,306 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 06:38:33,306 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:33,335 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 06:38:33,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:38:33,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129952309] [2024-12-02 06:38:33,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129952309] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:38:33,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412000797] [2024-12-02 06:38:33,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:38:33,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:38:33,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:38:33,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:38:33,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:38:33,414 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 06:38:33,414 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:38:33,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:38:33,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:38:33,442 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 06:38:33,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:38:33,473 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 06:38:33,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412000797] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:38:33,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:38:33,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 06:38:33,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346167382] [2024-12-02 06:38:33,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:38:33,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:38:33,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:38:33,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:38:33,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:38:33,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2024-12-02 06:38:33,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 150 transitions, 690 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 06:38:33,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:38:33,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2024-12-02 06:38:33,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:39:01,199 INFO L124 PetriNetUnfolderBase]: 291240/399571 cut-off events. [2024-12-02 06:39:01,199 INFO L125 PetriNetUnfolderBase]: For 155960/168462 co-relation queries the response was YES. [2024-12-02 06:39:02,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903779 conditions, 399571 events. 291240/399571 cut-off events. For 155960/168462 co-relation queries the response was YES. Maximal size of possible extension queue 11721. Compared 3057364 event pairs, 218677 based on Foata normal form. 4/307998 useless extension candidates. Maximal degree in co-relation 903670. Up to 353707 conditions per place. [2024-12-02 06:39:03,711 INFO L140 encePairwiseOnDemand]: 108/122 looper letters, 69 selfloop transitions, 46 changer transitions 0/146 dead transitions. [2024-12-02 06:39:03,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 146 transitions, 880 flow [2024-12-02 06:39:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:39:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:39:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-12-02 06:39:03,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4016393442622951 [2024-12-02 06:39:03,712 INFO L175 Difference]: Start difference. First operand has 112 places, 150 transitions, 690 flow. Second operand 4 states and 196 transitions. [2024-12-02 06:39:03,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 146 transitions, 880 flow [2024-12-02 06:39:03,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 146 transitions, 832 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-12-02 06:39:03,876 INFO L231 Difference]: Finished difference. Result has 105 places, 146 transitions, 694 flow [2024-12-02 06:39:03,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=694, PETRI_PLACES=105, PETRI_TRANSITIONS=146} [2024-12-02 06:39:03,876 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, 0 predicate places. [2024-12-02 06:39:03,877 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 146 transitions, 694 flow [2024-12-02 06:39:03,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 06:39:03,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:39:03,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:39:03,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 06:39:04,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c875-708f-4b0a-9b0d-4a57126966d2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 06:39:04,077 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 06:39:04,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:39:04,078 INFO L85 PathProgramCache]: Analyzing trace with hash 816078887, now seen corresponding path program 1 times [2024-12-02 06:39:04,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:39:04,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200990560] [2024-12-02 06:39:04,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:39:04,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:39:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:39:04,199 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 06:39:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:39:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200990560] [2024-12-02 06:39:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200990560] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:39:04,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:39:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:39:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936717807] [2024-12-02 06:39:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:39:04,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:39:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:39:04,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:39:04,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:39:04,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 122 [2024-12-02 06:39:04,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 146 transitions, 694 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 06:39:04,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:39:04,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 122 [2024-12-02 06:39:04,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand