./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB --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 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:56:55,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:56:55,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:56:55,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:56:55,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:56:55,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:56:55,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:56:55,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:56:55,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:56:55,342 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:56:55,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:56:55,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:56:55,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:56:55,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:56:55,342 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:56:55,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:56:55,343 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:56:55,344 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:56:55,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:56:55,344 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:56:55,344 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:56:55,344 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:56:55,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:56:55,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:56:55,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:56:55,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:56:55,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:56:55,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:56:55,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:56:55,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:56:55,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:56:55,348 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:56:55,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:56:55,349 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_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-11-28 03:56:55,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:56:55,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:56:55,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:56:55,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:56:55,737 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:56:55,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-28 03:56:58,762 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/data/3ce4ec466/5368d03d0f334d8fae7682917fffef56/FLAGba7700a52 [2024-11-28 03:56:59,034 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:56:59,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-28 03:56:59,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/data/3ce4ec466/5368d03d0f334d8fae7682917fffef56/FLAGba7700a52 [2024-11-28 03:56:59,072 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/data/3ce4ec466/5368d03d0f334d8fae7682917fffef56 [2024-11-28 03:56:59,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:56:59,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:56:59,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:56:59,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:56:59,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:56:59,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a991d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59, skipping insertion in model container [2024-11-28 03:56:59,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,113 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:56:59,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:56:59,374 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:56:59,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:56:59,426 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:56:59,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59 WrapperNode [2024-11-28 03:56:59,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:56:59,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:56:59,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:56:59,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:56:59,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,494 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 355 [2024-11-28 03:56:59,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:56:59,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:56:59,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:56:59,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:56:59,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,545 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 03:56:59,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,567 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,568 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:56:59,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:56:59,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:56:59,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:56:59,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (1/1) ... [2024-11-28 03:56:59,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:56:59,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:59,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:56:59,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:56:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:56:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:56:59,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:56:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:56:59,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:56:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 03:56:59,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 03:56:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:56:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:56:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:56:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:56:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:56:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:56:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:56:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:56:59,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:56:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:56:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:56:59,673 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:56:59,802 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:56:59,805 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:57:00,588 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:57:00,588 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:57:01,700 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:57:01,700 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-28 03:57:01,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:57:01 BoogieIcfgContainer [2024-11-28 03:57:01,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:57:01,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:57:01,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:57:01,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:57:01,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:56:59" (1/3) ... [2024-11-28 03:57:01,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cce236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:57:01, skipping insertion in model container [2024-11-28 03:57:01,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:56:59" (2/3) ... [2024-11-28 03:57:01,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cce236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:57:01, skipping insertion in model container [2024-11-28 03:57:01,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:57:01" (3/3) ... [2024-11-28 03:57:01,714 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-11-28 03:57:01,731 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:57:01,732 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum2.wvr.c that has 4 procedures, 85 locations, 1 initial locations, 5 loop locations, and 46 error locations. [2024-11-28 03:57:01,732 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:57:02,081 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 03:57:02,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 199 flow [2024-11-28 03:57:02,202 INFO L124 PetriNetUnfolderBase]: 5/86 cut-off events. [2024-11-28 03:57:02,204 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 03:57:02,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 5/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 339 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-11-28 03:57:02,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 89 transitions, 199 flow [2024-11-28 03:57:02,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 84 transitions, 183 flow [2024-11-28 03:57:02,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:57:02,243 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;@5f3cbc31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:57:02,244 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-11-28 03:57:02,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:57:02,249 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 03:57:02,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:57:02,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:02,250 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:57:02,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:02,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:02,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1371727, now seen corresponding path program 1 times [2024-11-28 03:57:02,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:02,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838644177] [2024-11-28 03:57:02,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:02,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:02,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:02,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838644177] [2024-11-28 03:57:02,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838644177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:02,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:02,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:57:02,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533486860] [2024-11-28 03:57:02,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:02,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:02,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:02,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:02,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:02,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-11-28 03:57:02,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:02,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:02,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-11-28 03:57:02,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:05,699 INFO L124 PetriNetUnfolderBase]: 5635/9037 cut-off events. [2024-11-28 03:57:05,700 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-11-28 03:57:05,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17352 conditions, 9037 events. 5635/9037 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 68324 event pairs, 4968 based on Foata normal form. 2/4800 useless extension candidates. Maximal degree in co-relation 16555. Up to 7974 conditions per place. [2024-11-28 03:57:05,789 INFO L140 encePairwiseOnDemand]: 60/89 looper letters, 48 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-28 03:57:05,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 269 flow [2024-11-28 03:57:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:57:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-28 03:57:05,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4410112359550562 [2024-11-28 03:57:05,807 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 183 flow. Second operand 4 states and 157 transitions. [2024-11-28 03:57:05,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 269 flow [2024-11-28 03:57:05,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 260 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 03:57:05,827 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 198 flow [2024-11-28 03:57:05,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-11-28 03:57:05,836 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -17 predicate places. [2024-11-28 03:57:05,838 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 198 flow [2024-11-28 03:57:05,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:05,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:05,839 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 03:57:05,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:57:05,840 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:05,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2083175449, now seen corresponding path program 1 times [2024-11-28 03:57:05,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:05,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158168061] [2024-11-28 03:57:05,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:05,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:06,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158168061] [2024-11-28 03:57:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158168061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:06,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833745319] [2024-11-28 03:57:06,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:06,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:06,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:06,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:06,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:57:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:06,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:57:06,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:06,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:57:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833745319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:06,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:57:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:57:06,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533650441] [2024-11-28 03:57:06,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:06,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:57:06,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:06,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:57:06,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:57:06,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-11-28 03:57:06,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:06,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:06,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-11-28 03:57:06,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:08,978 INFO L124 PetriNetUnfolderBase]: 5635/9035 cut-off events. [2024-11-28 03:57:08,979 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-28 03:57:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17249 conditions, 9035 events. 5635/9035 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 68240 event pairs, 4968 based on Foata normal form. 2/4801 useless extension candidates. Maximal degree in co-relation 17199. Up to 7964 conditions per place. [2024-11-28 03:57:09,049 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 41 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-11-28 03:57:09,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 296 flow [2024-11-28 03:57:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:57:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:57:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-11-28 03:57:09,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32771535580524347 [2024-11-28 03:57:09,057 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 198 flow. Second operand 6 states and 175 transitions. [2024-11-28 03:57:09,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 296 flow [2024-11-28 03:57:09,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:57:09,062 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 214 flow [2024-11-28 03:57:09,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-11-28 03:57:09,063 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2024-11-28 03:57:09,063 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 214 flow [2024-11-28 03:57:09,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:09,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:09,065 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:09,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:57:09,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 03:57:09,270 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:09,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash -81473670, now seen corresponding path program 1 times [2024-11-28 03:57:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:09,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033980943] [2024-11-28 03:57:09,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:09,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:09,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033980943] [2024-11-28 03:57:09,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033980943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:09,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:09,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:57:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251440738] [2024-11-28 03:57:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:09,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:09,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:09,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:09,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:09,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-28 03:57:09,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:09,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:09,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-28 03:57:09,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:11,716 INFO L124 PetriNetUnfolderBase]: 5633/9034 cut-off events. [2024-11-28 03:57:11,717 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-28 03:57:11,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17255 conditions, 9034 events. 5633/9034 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 68272 event pairs, 4968 based on Foata normal form. 3/4803 useless extension candidates. Maximal degree in co-relation 17203. Up to 7969 conditions per place. [2024-11-28 03:57:11,776 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 45 selfloop transitions, 4 changer transitions 1/69 dead transitions. [2024-11-28 03:57:11,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 306 flow [2024-11-28 03:57:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:57:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-28 03:57:11,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41853932584269665 [2024-11-28 03:57:11,782 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 214 flow. Second operand 4 states and 149 transitions. [2024-11-28 03:57:11,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 306 flow [2024-11-28 03:57:11,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 69 transitions, 282 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 03:57:11,786 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 188 flow [2024-11-28 03:57:11,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-11-28 03:57:11,787 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2024-11-28 03:57:11,788 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 188 flow [2024-11-28 03:57:11,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:11,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:11,789 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 03:57:11,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:57:11,789 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:11,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash -153928090, now seen corresponding path program 1 times [2024-11-28 03:57:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418742051] [2024-11-28 03:57:11,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:11,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418742051] [2024-11-28 03:57:11,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418742051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:11,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876526818] [2024-11-28 03:57:11,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:11,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:11,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:11,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:11,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:57:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:12,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:57:12,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:12,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876526818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:12,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:12,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 03:57:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706748583] [2024-11-28 03:57:12,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:12,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:57:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:12,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:57:12,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:57:12,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-11-28 03:57:12,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 188 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:12,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:12,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-11-28 03:57:12,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:13,914 INFO L124 PetriNetUnfolderBase]: 5639/9057 cut-off events. [2024-11-28 03:57:13,914 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-28 03:57:13,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17315 conditions, 9057 events. 5639/9057 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 68446 event pairs, 4968 based on Foata normal form. 6/4826 useless extension candidates. Maximal degree in co-relation 17237. Up to 7974 conditions per place. [2024-11-28 03:57:13,962 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 45 selfloop transitions, 24 changer transitions 0/86 dead transitions. [2024-11-28 03:57:13,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 416 flow [2024-11-28 03:57:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:57:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:57:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-11-28 03:57:13,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3089887640449438 [2024-11-28 03:57:13,966 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 188 flow. Second operand 10 states and 275 transitions. [2024-11-28 03:57:13,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 416 flow [2024-11-28 03:57:13,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 393 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 03:57:13,972 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 337 flow [2024-11-28 03:57:13,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=337, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2024-11-28 03:57:13,975 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -8 predicate places. [2024-11-28 03:57:13,976 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 337 flow [2024-11-28 03:57:13,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:13,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:13,976 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:13,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:57:14,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:14,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:14,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash -644836732, now seen corresponding path program 1 times [2024-11-28 03:57:14,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:14,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684436227] [2024-11-28 03:57:14,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:14,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:14,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684436227] [2024-11-28 03:57:14,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684436227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:14,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336447492] [2024-11-28 03:57:14,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:14,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:14,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:14,817 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:14,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:57:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:15,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:57:15,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:15,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:57:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:15,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:15,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 03:57:15,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 03:57:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:15,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336447492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:15,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:15,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-28 03:57:15,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370786233] [2024-11-28 03:57:15,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:15,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:57:15,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:15,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:57:15,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:57:15,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-28 03:57:15,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 337 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:15,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:15,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-28 03:57:15,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:17,739 INFO L124 PetriNetUnfolderBase]: 9655/15832 cut-off events. [2024-11-28 03:57:17,739 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-11-28 03:57:17,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29835 conditions, 15832 events. 9655/15832 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 126994 event pairs, 2360 based on Foata normal form. 0/8334 useless extension candidates. Maximal degree in co-relation 29769. Up to 5348 conditions per place. [2024-11-28 03:57:17,821 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 102 selfloop transitions, 23 changer transitions 0/144 dead transitions. [2024-11-28 03:57:17,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 709 flow [2024-11-28 03:57:17,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:57:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:57:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 300 transitions. [2024-11-28 03:57:17,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42134831460674155 [2024-11-28 03:57:17,824 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 337 flow. Second operand 8 states and 300 transitions. [2024-11-28 03:57:17,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 709 flow [2024-11-28 03:57:17,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 144 transitions, 686 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 03:57:17,828 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 409 flow [2024-11-28 03:57:17,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=409, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2024-11-28 03:57:17,829 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2024-11-28 03:57:17,829 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 409 flow [2024-11-28 03:57:17,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:17,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:17,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:17,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:57:18,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:18,031 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:18,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:18,032 INFO L85 PathProgramCache]: Analyzing trace with hash -644836731, now seen corresponding path program 1 times [2024-11-28 03:57:18,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:18,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854090695] [2024-11-28 03:57:18,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:18,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854090695] [2024-11-28 03:57:18,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854090695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:18,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881114632] [2024-11-28 03:57:18,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:18,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:18,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:18,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:18,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:57:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:18,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:57:18,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:18,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:57:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:18,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:18,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 03:57:18,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 03:57:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:18,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881114632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:18,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:18,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-28 03:57:18,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892472392] [2024-11-28 03:57:18,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:18,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:57:18,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:18,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:57:18,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:57:18,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-28 03:57:18,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 409 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:18,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:18,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-28 03:57:18,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:21,945 INFO L124 PetriNetUnfolderBase]: 9113/14814 cut-off events. [2024-11-28 03:57:21,945 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2024-11-28 03:57:21,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33807 conditions, 14814 events. 9113/14814 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 115117 event pairs, 2507 based on Foata normal form. 0/8202 useless extension candidates. Maximal degree in co-relation 33739. Up to 4584 conditions per place. [2024-11-28 03:57:22,016 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 101 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-11-28 03:57:22,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 143 transitions, 759 flow [2024-11-28 03:57:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:57:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:57:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 299 transitions. [2024-11-28 03:57:22,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4199438202247191 [2024-11-28 03:57:22,019 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 409 flow. Second operand 8 states and 299 transitions. [2024-11-28 03:57:22,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 143 transitions, 759 flow [2024-11-28 03:57:22,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 143 transitions, 737 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:57:22,026 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 429 flow [2024-11-28 03:57:22,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=429, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-11-28 03:57:22,027 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2024-11-28 03:57:22,027 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 429 flow [2024-11-28 03:57:22,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:22,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:22,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:22,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:57:22,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:22,229 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:22,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:22,232 INFO L85 PathProgramCache]: Analyzing trace with hash -644836728, now seen corresponding path program 1 times [2024-11-28 03:57:22,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:22,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032038187] [2024-11-28 03:57:22,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:22,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:22,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:22,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032038187] [2024-11-28 03:57:22,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032038187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:22,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126912840] [2024-11-28 03:57:22,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:22,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:22,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:22,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:22,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:57:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:23,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:57:23,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:23,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:57:23,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:57:23,219 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:57:23,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 03:57:23,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:57:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:23,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:23,388 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_86 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_86) c_~A~0.base) c_~A~0.offset) 2147483648)) is different from false [2024-11-28 03:57:23,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:57:23,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-28 03:57:23,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:57:23,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-28 03:57:23,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-28 03:57:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 03:57:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126912840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:23,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:23,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-11-28 03:57:23,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733112916] [2024-11-28 03:57:23,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:23,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:57:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:23,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:57:23,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=167, Unknown=1, NotChecked=26, Total=240 [2024-11-28 03:57:23,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 89 [2024-11-28 03:57:23,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 429 flow. Second operand has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:23,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:23,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 89 [2024-11-28 03:57:23,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:26,273 INFO L124 PetriNetUnfolderBase]: 10739/16775 cut-off events. [2024-11-28 03:57:26,274 INFO L125 PetriNetUnfolderBase]: For 5954/5954 co-relation queries the response was YES. [2024-11-28 03:57:26,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40125 conditions, 16775 events. 10739/16775 cut-off events. For 5954/5954 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 124812 event pairs, 4243 based on Foata normal form. 0/9826 useless extension candidates. Maximal degree in co-relation 40056. Up to 8951 conditions per place. [2024-11-28 03:57:26,346 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 110 selfloop transitions, 17 changer transitions 0/144 dead transitions. [2024-11-28 03:57:26,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 144 transitions, 789 flow [2024-11-28 03:57:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:57:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:57:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 352 transitions. [2024-11-28 03:57:26,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3595505617977528 [2024-11-28 03:57:26,348 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 429 flow. Second operand 11 states and 352 transitions. [2024-11-28 03:57:26,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 144 transitions, 789 flow [2024-11-28 03:57:26,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 144 transitions, 764 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 03:57:26,356 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 434 flow [2024-11-28 03:57:26,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=434, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-28 03:57:26,357 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2024-11-28 03:57:26,357 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 434 flow [2024-11-28 03:57:26,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:26,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:26,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:26,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:57:26,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:26,563 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:26,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash -644836723, now seen corresponding path program 1 times [2024-11-28 03:57:26,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:26,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425802858] [2024-11-28 03:57:26,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:57:26,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425802858] [2024-11-28 03:57:26,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425802858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:26,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:26,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:57:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070147716] [2024-11-28 03:57:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:26,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:57:26,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:26,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:57:26,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:26,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-28 03:57:26,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:26,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:26,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-28 03:57:26,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:28,345 INFO L124 PetriNetUnfolderBase]: 8017/13797 cut-off events. [2024-11-28 03:57:28,345 INFO L125 PetriNetUnfolderBase]: For 9455/9455 co-relation queries the response was YES. [2024-11-28 03:57:28,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33546 conditions, 13797 events. 8017/13797 cut-off events. For 9455/9455 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 115973 event pairs, 1968 based on Foata normal form. 0/8577 useless extension candidates. Maximal degree in co-relation 33476. Up to 8183 conditions per place. [2024-11-28 03:57:28,413 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 96 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-11-28 03:57:28,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 117 transitions, 681 flow [2024-11-28 03:57:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:57:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:57:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-28 03:57:28,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5580524344569289 [2024-11-28 03:57:28,415 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 434 flow. Second operand 3 states and 149 transitions. [2024-11-28 03:57:28,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 117 transitions, 681 flow [2024-11-28 03:57:28,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 658 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 03:57:28,422 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 407 flow [2024-11-28 03:57:28,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-28 03:57:28,422 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2024-11-28 03:57:28,423 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 407 flow [2024-11-28 03:57:28,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:28,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:28,423 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:28,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:57:28,423 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:28,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash -644836729, now seen corresponding path program 1 times [2024-11-28 03:57:28,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:28,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045969965] [2024-11-28 03:57:28,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:28,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:28,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:28,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045969965] [2024-11-28 03:57:28,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045969965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:28,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198550912] [2024-11-28 03:57:28,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:28,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:28,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:28,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:28,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:57:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:29,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:57:29,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:29,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:57:29,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:57:29,192 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:57:29,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 03:57:29,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 03:57:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:29,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:29,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:57:29,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-28 03:57:29,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:57:29,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-28 03:57:29,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 03:57:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:29,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198550912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:29,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:29,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-11-28 03:57:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938130328] [2024-11-28 03:57:29,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:29,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:57:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:29,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:57:29,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=188, Unknown=6, NotChecked=0, Total=240 [2024-11-28 03:57:29,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 89 [2024-11-28 03:57:29,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 407 flow. Second operand has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:29,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:29,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 89 [2024-11-28 03:57:29,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:32,136 INFO L124 PetriNetUnfolderBase]: 9643/15317 cut-off events. [2024-11-28 03:57:32,137 INFO L125 PetriNetUnfolderBase]: For 4351/4351 co-relation queries the response was YES. [2024-11-28 03:57:32,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36745 conditions, 15317 events. 9643/15317 cut-off events. For 4351/4351 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 119229 event pairs, 6157 based on Foata normal form. 222/9392 useless extension candidates. Maximal degree in co-relation 36677. Up to 9813 conditions per place. [2024-11-28 03:57:32,197 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 107 selfloop transitions, 17 changer transitions 0/141 dead transitions. [2024-11-28 03:57:32,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 761 flow [2024-11-28 03:57:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:57:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:57:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 349 transitions. [2024-11-28 03:57:32,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3564862104187947 [2024-11-28 03:57:32,200 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 407 flow. Second operand 11 states and 349 transitions. [2024-11-28 03:57:32,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 761 flow [2024-11-28 03:57:32,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 759 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:57:32,231 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 435 flow [2024-11-28 03:57:32,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=435, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-11-28 03:57:32,232 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2024-11-28 03:57:32,232 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 435 flow [2024-11-28 03:57:32,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:32,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:32,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:32,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:57:32,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:57:32,433 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:32,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1212753072, now seen corresponding path program 1 times [2024-11-28 03:57:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:32,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016889096] [2024-11-28 03:57:32,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:32,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:57:32,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:32,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016889096] [2024-11-28 03:57:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016889096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:32,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:32,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:57:32,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846833615] [2024-11-28 03:57:32,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:32,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:32,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:32,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:32,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 89 [2024-11-28 03:57:32,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:32,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:32,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 89 [2024-11-28 03:57:32,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:35,098 INFO L124 PetriNetUnfolderBase]: 9643/15387 cut-off events. [2024-11-28 03:57:35,098 INFO L125 PetriNetUnfolderBase]: For 8803/8803 co-relation queries the response was YES. [2024-11-28 03:57:35,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37494 conditions, 15387 events. 9643/15387 cut-off events. For 8803/8803 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 119922 event pairs, 7157 based on Foata normal form. 444/10319 useless extension candidates. Maximal degree in co-relation 37424. Up to 11367 conditions per place. [2024-11-28 03:57:35,165 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 120 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-11-28 03:57:35,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 140 transitions, 791 flow [2024-11-28 03:57:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:57:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-11-28 03:57:35,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5280898876404494 [2024-11-28 03:57:35,167 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 435 flow. Second operand 4 states and 188 transitions. [2024-11-28 03:57:35,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 140 transitions, 791 flow [2024-11-28 03:57:35,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 758 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-28 03:57:35,188 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 423 flow [2024-11-28 03:57:35,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=423, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-11-28 03:57:35,189 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-11-28 03:57:35,189 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 423 flow [2024-11-28 03:57:35,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:35,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:35,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:35,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:57:35,190 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:35,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1234881824, now seen corresponding path program 1 times [2024-11-28 03:57:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501496856] [2024-11-28 03:57:35,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:35,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:35,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501496856] [2024-11-28 03:57:35,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501496856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:35,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363209957] [2024-11-28 03:57:35,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:35,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:35,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:35,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:35,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:57:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:35,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:57:35,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:35,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:57:35,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363209957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:35,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:35,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-28 03:57:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29783113] [2024-11-28 03:57:35,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:35,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:57:35,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:35,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:57:35,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:57:35,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 89 [2024-11-28 03:57:35,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 423 flow. Second operand has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:35,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:35,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 89 [2024-11-28 03:57:35,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:38,248 INFO L124 PetriNetUnfolderBase]: 10187/16364 cut-off events. [2024-11-28 03:57:38,249 INFO L125 PetriNetUnfolderBase]: For 13915/13915 co-relation queries the response was YES. [2024-11-28 03:57:38,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43354 conditions, 16364 events. 10187/16364 cut-off events. For 13915/13915 co-relation queries the response was YES. Maximal size of possible extension queue 1114. Compared 123248 event pairs, 8260 based on Foata normal form. 1/10143 useless extension candidates. Maximal degree in co-relation 43257. Up to 11633 conditions per place. [2024-11-28 03:57:38,334 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 107 selfloop transitions, 40 changer transitions 0/164 dead transitions. [2024-11-28 03:57:38,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 164 transitions, 1086 flow [2024-11-28 03:57:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:57:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 03:57:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 347 transitions. [2024-11-28 03:57:38,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3249063670411985 [2024-11-28 03:57:38,337 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 423 flow. Second operand 12 states and 347 transitions. [2024-11-28 03:57:38,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 164 transitions, 1086 flow [2024-11-28 03:57:38,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 164 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:57:38,346 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 651 flow [2024-11-28 03:57:38,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2024-11-28 03:57:38,347 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 22 predicate places. [2024-11-28 03:57:38,347 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 651 flow [2024-11-28 03:57:38,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:38,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:38,348 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 03:57:38,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:57:38,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 03:57:38,553 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:38,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:38,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1317277954, now seen corresponding path program 2 times [2024-11-28 03:57:38,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:38,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8557007] [2024-11-28 03:57:38,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:57:38,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:38,565 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:57:38,565 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:57:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:57:38,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:38,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8557007] [2024-11-28 03:57:38,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8557007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:38,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083043966] [2024-11-28 03:57:38,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:57:38,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:38,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:38,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:38,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:57:38,757 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:57:38,757 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:57:38,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:57:38,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:57:38,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:57:38,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083043966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:38,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:38,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 03:57:38,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063679681] [2024-11-28 03:57:38,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:38,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:38,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:38,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:38,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:38,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-11-28 03:57:38,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 651 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:38,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:38,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-11-28 03:57:38,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:40,826 INFO L124 PetriNetUnfolderBase]: 9445/15589 cut-off events. [2024-11-28 03:57:40,826 INFO L125 PetriNetUnfolderBase]: For 12002/12002 co-relation queries the response was YES. [2024-11-28 03:57:40,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41985 conditions, 15589 events. 9445/15589 cut-off events. For 12002/12002 co-relation queries the response was YES. Maximal size of possible extension queue 1279. Compared 122827 event pairs, 8470 based on Foata normal form. 1/9924 useless extension candidates. Maximal degree in co-relation 41885. Up to 13538 conditions per place. [2024-11-28 03:57:40,922 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 72 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-11-28 03:57:40,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 105 transitions, 815 flow [2024-11-28 03:57:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:57:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-28 03:57:40,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35674157303370785 [2024-11-28 03:57:40,924 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 651 flow. Second operand 4 states and 127 transitions. [2024-11-28 03:57:40,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 105 transitions, 815 flow [2024-11-28 03:57:40,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 105 transitions, 789 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 03:57:40,947 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 645 flow [2024-11-28 03:57:40,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=645, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-11-28 03:57:40,948 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 23 predicate places. [2024-11-28 03:57:40,948 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 645 flow [2024-11-28 03:57:40,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:40,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:40,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:40,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:57:41,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:57:41,153 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:41,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1350645382, now seen corresponding path program 1 times [2024-11-28 03:57:41,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:41,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555712439] [2024-11-28 03:57:41,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:41,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:41,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:41,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555712439] [2024-11-28 03:57:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555712439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:41,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117544324] [2024-11-28 03:57:41,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:41,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:41,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:41,709 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:41,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:57:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:41,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 03:57:41,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:42,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:57:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:42,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:42,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 03:57:42,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-28 03:57:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:42,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117544324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:42,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:42,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-11-28 03:57:42,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175236958] [2024-11-28 03:57:42,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:42,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:57:42,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:42,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:57:42,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:57:42,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 89 [2024-11-28 03:57:42,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 645 flow. Second operand has 21 states, 21 states have (on average 21.0) internal successors, (441), 21 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:42,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:42,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 89 [2024-11-28 03:57:42,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:47,059 INFO L124 PetriNetUnfolderBase]: 14094/22649 cut-off events. [2024-11-28 03:57:47,059 INFO L125 PetriNetUnfolderBase]: For 21186/21496 co-relation queries the response was YES. [2024-11-28 03:57:47,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63595 conditions, 22649 events. 14094/22649 cut-off events. For 21186/21496 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 183039 event pairs, 5313 based on Foata normal form. 0/14571 useless extension candidates. Maximal degree in co-relation 63499. Up to 5844 conditions per place. [2024-11-28 03:57:47,178 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 195 selfloop transitions, 62 changer transitions 4/278 dead transitions. [2024-11-28 03:57:47,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 278 transitions, 2013 flow [2024-11-28 03:57:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:57:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:57:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 540 transitions. [2024-11-28 03:57:47,181 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.356906807666887 [2024-11-28 03:57:47,181 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 645 flow. Second operand 17 states and 540 transitions. [2024-11-28 03:57:47,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 278 transitions, 2013 flow [2024-11-28 03:57:47,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 278 transitions, 1983 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:57:47,208 INFO L231 Difference]: Finished difference. Result has 127 places, 128 transitions, 819 flow [2024-11-28 03:57:47,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=819, PETRI_PLACES=127, PETRI_TRANSITIONS=128} [2024-11-28 03:57:47,209 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2024-11-28 03:57:47,209 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 128 transitions, 819 flow [2024-11-28 03:57:47,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 21.0) internal successors, (441), 21 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:47,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:47,209 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:47,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:57:47,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:57:47,410 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:47,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:47,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1350645381, now seen corresponding path program 1 times [2024-11-28 03:57:47,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:47,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19979026] [2024-11-28 03:57:47,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:47,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:47,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:47,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19979026] [2024-11-28 03:57:47,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19979026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:47,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824154341] [2024-11-28 03:57:47,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:47,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:47,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:47,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:47,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:57:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:48,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 03:57:48,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:48,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:57:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:48,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:48,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 03:57:48,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-28 03:57:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:48,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824154341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:48,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:48,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-11-28 03:57:48,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664560379] [2024-11-28 03:57:48,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:48,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:57:48,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:48,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:57:48,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:57:48,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 89 [2024-11-28 03:57:48,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 128 transitions, 819 flow. Second operand has 21 states, 21 states have (on average 21.0) internal successors, (441), 21 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:48,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:48,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 89 [2024-11-28 03:57:48,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:53,046 INFO L124 PetriNetUnfolderBase]: 13913/22382 cut-off events. [2024-11-28 03:57:53,046 INFO L125 PetriNetUnfolderBase]: For 22323/22633 co-relation queries the response was YES. [2024-11-28 03:57:53,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68680 conditions, 22382 events. 13913/22382 cut-off events. For 22323/22633 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 180862 event pairs, 5313 based on Foata normal form. 0/15408 useless extension candidates. Maximal degree in co-relation 68571. Up to 5844 conditions per place. [2024-11-28 03:57:53,408 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 194 selfloop transitions, 62 changer transitions 4/277 dead transitions. [2024-11-28 03:57:53,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 277 transitions, 2145 flow [2024-11-28 03:57:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:57:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:57:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 539 transitions. [2024-11-28 03:57:53,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3562458691341705 [2024-11-28 03:57:53,411 INFO L175 Difference]: Start difference. First operand has 127 places, 128 transitions, 819 flow. Second operand 17 states and 539 transitions. [2024-11-28 03:57:53,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 277 transitions, 2145 flow [2024-11-28 03:57:53,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 277 transitions, 2074 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-28 03:57:53,464 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 876 flow [2024-11-28 03:57:53,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=876, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2024-11-28 03:57:53,465 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 45 predicate places. [2024-11-28 03:57:53,465 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 876 flow [2024-11-28 03:57:53,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 21.0) internal successors, (441), 21 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:53,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:53,465 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:53,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:57:53,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:57:53,666 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:53,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1350645372, now seen corresponding path program 1 times [2024-11-28 03:57:53,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:53,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935021073] [2024-11-28 03:57:53,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:53,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:57:53,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:53,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935021073] [2024-11-28 03:57:53,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935021073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:53,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:53,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:57:53,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878272073] [2024-11-28 03:57:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:53,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:57:53,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:53,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:57:53,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:53,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-28 03:57:53,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 876 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:53,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:57:53,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-28 03:57:53,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:57:58,440 INFO L124 PetriNetUnfolderBase]: 17040/28189 cut-off events. [2024-11-28 03:57:58,441 INFO L125 PetriNetUnfolderBase]: For 33043/33295 co-relation queries the response was YES. [2024-11-28 03:57:58,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89338 conditions, 28189 events. 17040/28189 cut-off events. For 33043/33295 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 237769 event pairs, 5926 based on Foata normal form. 0/19903 useless extension candidates. Maximal degree in co-relation 89227. Up to 16011 conditions per place. [2024-11-28 03:57:58,589 INFO L140 encePairwiseOnDemand]: 82/89 looper letters, 142 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2024-11-28 03:57:58,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 166 transitions, 1358 flow [2024-11-28 03:57:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:57:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:57:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-28 03:57:58,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5617977528089888 [2024-11-28 03:57:58,591 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 876 flow. Second operand 3 states and 150 transitions. [2024-11-28 03:57:58,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 166 transitions, 1358 flow [2024-11-28 03:57:58,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 166 transitions, 1302 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-28 03:57:58,658 INFO L231 Difference]: Finished difference. Result has 128 places, 130 transitions, 859 flow [2024-11-28 03:57:58,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=859, PETRI_PLACES=128, PETRI_TRANSITIONS=130} [2024-11-28 03:57:58,659 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2024-11-28 03:57:58,659 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 130 transitions, 859 flow [2024-11-28 03:57:58,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:58,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:57:58,660 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:58,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:57:58,660 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-28 03:57:58,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:58,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1350645379, now seen corresponding path program 1 times [2024-11-28 03:57:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:58,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961887176] [2024-11-28 03:57:58,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961887176] [2024-11-28 03:57:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961887176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709991039] [2024-11-28 03:57:59,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:59,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:59,152 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:59,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c1143c5-f2c5-4eb0-9054-dfe5b1ea97c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:57:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:59,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:57:59,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:59,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:57:59,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:57:59,539 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:57:59,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 03:57:59,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-28 03:57:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:59,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:58:00,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:58:00,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-28 03:58:00,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:58:00,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-11-28 03:58:00,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-28 03:58:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:58:00,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709991039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:58:00,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:58:00,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-28 03:58:00,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659969223] [2024-11-28 03:58:00,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:58:00,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:58:00,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:00,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:58:00,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=437, Unknown=4, NotChecked=0, Total=506 [2024-11-28 03:58:00,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 89 [2024-11-28 03:58:00,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 130 transitions, 859 flow. Second operand has 23 states, 23 states have (on average 16.217391304347824) internal successors, (373), 23 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:00,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:58:00,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 89 [2024-11-28 03:58:00,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand