./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.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_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/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_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/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_cf666265-b3a7-4b08-8cbe-61d16d306540/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 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:03:07,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:03:07,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:03:07,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:03:07,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:03:07,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:03:07,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:03:07,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:03:07,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:03:07,576 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:03:07,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:03:07,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:03:07,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:03:07,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:03:07,577 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:03:07,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:03:07,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:03:07,578 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:03:07,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:03:07,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:03:07,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:03:07,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:03:07,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:03:07,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:03:07,579 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:03:07,579 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:03:07,579 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:03:07,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:03:07,579 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:03:07,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:03:07,580 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:03:07,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:03:07,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:03:07,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:03:07,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:07,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:03:07,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:03:07,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:03:07,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:03:07,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:07,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:03:07,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:03:07,582 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:03:07,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:03:07,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:03:07,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:03:07,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:03:07,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:03:07,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:03:07,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:03:07,583 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_cf666265-b3a7-4b08-8cbe-61d16d306540/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 -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-28 04:03:07,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:03:07,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:03:07,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:03:07,936 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:03:07,937 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:03:07,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-28 04:03:10,902 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/data/e9e62391f/6746ebf69bb1493a954e4e1e600d0ef3/FLAG3819272ea [2024-11-28 04:03:11,217 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:03:11,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-28 04:03:11,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/data/e9e62391f/6746ebf69bb1493a954e4e1e600d0ef3/FLAG3819272ea [2024-11-28 04:03:11,244 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/data/e9e62391f/6746ebf69bb1493a954e4e1e600d0ef3 [2024-11-28 04:03:11,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:03:11,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:03:11,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:03:11,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:03:11,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:03:11,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edfb0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11, skipping insertion in model container [2024-11-28 04:03:11,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:03:11,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:03:11,547 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:03:11,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:03:11,616 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:03:11,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11 WrapperNode [2024-11-28 04:03:11,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:03:11,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:03:11,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:03:11,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:03:11,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,694 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 272 [2024-11-28 04:03:11,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:03:11,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:03:11,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:03:11,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:03:11,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,754 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-28 04:03:11,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,771 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,799 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:03:11,800 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:03:11,800 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:03:11,800 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:03:11,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (1/1) ... [2024-11-28 04:03:11,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:11,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:11,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:03:11,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:03:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:03:11,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:03:11,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:03:11,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:03:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:03:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:03:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:03:11,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:03:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:03:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:03:11,886 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 04:03:12,007 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:03:12,009 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:03:12,800 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:03:12,801 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:03:13,391 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:03:13,391 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 04:03:13,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:13 BoogieIcfgContainer [2024-11-28 04:03:13,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:03:13,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:03:13,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:03:13,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:03:13,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:03:11" (1/3) ... [2024-11-28 04:03:13,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75075325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:03:13, skipping insertion in model container [2024-11-28 04:03:13,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:11" (2/3) ... [2024-11-28 04:03:13,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75075325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:03:13, skipping insertion in model container [2024-11-28 04:03:13,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:13" (3/3) ... [2024-11-28 04:03:13,405 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-28 04:03:13,422 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:03:13,423 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-three-array-max.wvr.c that has 4 procedures, 95 locations, 1 initial locations, 6 loop locations, and 32 error locations. [2024-11-28 04:03:13,423 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:03:13,571 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:03:13,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 231 flow [2024-11-28 04:03:13,704 INFO L124 PetriNetUnfolderBase]: 11/102 cut-off events. [2024-11-28 04:03:13,710 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 04:03:13,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 11/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 242 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-28 04:03:13,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 105 transitions, 231 flow [2024-11-28 04:03:13,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 101 transitions, 220 flow [2024-11-28 04:03:13,739 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:03:13,756 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;@725f51f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:03:13,756 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-11-28 04:03:13,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:03:13,762 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:03:13,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:03:13,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:13,764 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:03:13,764 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:13,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1037929, now seen corresponding path program 1 times [2024-11-28 04:03:13,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:13,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794919355] [2024-11-28 04:03:13,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:13,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:14,142 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 04:03:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:14,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794919355] [2024-11-28 04:03:14,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794919355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:14,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:14,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:03:14,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545658986] [2024-11-28 04:03:14,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:14,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:03:14,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:14,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:03:14,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:03:14,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-28 04:03:14,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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 04:03:14,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:14,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-28 04:03:14,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:15,194 INFO L124 PetriNetUnfolderBase]: 1153/2343 cut-off events. [2024-11-28 04:03:15,194 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-28 04:03:15,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 2343 events. 1153/2343 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16191 event pairs, 826 based on Foata normal form. 3/1752 useless extension candidates. Maximal degree in co-relation 3589. Up to 1545 conditions per place. [2024-11-28 04:03:15,234 INFO L140 encePairwiseOnDemand]: 87/105 looper letters, 52 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-11-28 04:03:15,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 358 flow [2024-11-28 04:03:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:03:15,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-11-28 04:03:15,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-28 04:03:15,262 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 220 flow. Second operand 4 states and 266 transitions. [2024-11-28 04:03:15,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 358 flow [2024-11-28 04:03:15,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 04:03:15,285 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 292 flow [2024-11-28 04:03:15,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-11-28 04:03:15,295 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2024-11-28 04:03:15,295 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 292 flow [2024-11-28 04:03:15,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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 04:03:15,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:15,295 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:03:15,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:03:15,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:15,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:15,298 INFO L85 PathProgramCache]: Analyzing trace with hash 857217384, now seen corresponding path program 1 times [2024-11-28 04:03:15,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:15,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561844119] [2024-11-28 04:03:15,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:15,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:15,538 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 04:03:15,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:15,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561844119] [2024-11-28 04:03:15,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561844119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:15,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984804200] [2024-11-28 04:03:15,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:15,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:15,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:15,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:03:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:15,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:03:15,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:15,738 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 04:03:15,739 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984804200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:03:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:03:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940008971] [2024-11-28 04:03:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:15,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:15,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:15,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:15,787 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-28 04:03:15,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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 04:03:15,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:15,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-28 04:03:15,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:16,514 INFO L124 PetriNetUnfolderBase]: 1153/2340 cut-off events. [2024-11-28 04:03:16,514 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-28 04:03:16,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 2340 events. 1153/2340 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16139 event pairs, 826 based on Foata normal form. 3/1754 useless extension candidates. Maximal degree in co-relation 3898. Up to 1530 conditions per place. [2024-11-28 04:03:16,536 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 42 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-11-28 04:03:16,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 398 flow [2024-11-28 04:03:16,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:03:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2024-11-28 04:03:16,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-11-28 04:03:16,540 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 292 flow. Second operand 6 states and 356 transitions. [2024-11-28 04:03:16,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 398 flow [2024-11-28 04:03:16,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:03:16,581 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 314 flow [2024-11-28 04:03:16,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-11-28 04:03:16,582 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2024-11-28 04:03:16,582 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 314 flow [2024-11-28 04:03:16,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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 04:03:16,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:16,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:03:16,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:16,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 04:03:16,784 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:16,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash 857165063, now seen corresponding path program 1 times [2024-11-28 04:03:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:16,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891311177] [2024-11-28 04:03:16,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:17,013 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 04:03:17,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891311177] [2024-11-28 04:03:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891311177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:17,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:17,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725192043] [2024-11-28 04:03:17,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:17,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:03:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:17,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:03:17,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:03:17,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-28 04:03:17,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 04:03:17,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:17,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-28 04:03:17,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:17,569 INFO L124 PetriNetUnfolderBase]: 1154/2357 cut-off events. [2024-11-28 04:03:17,569 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-28 04:03:17,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4020 conditions, 2357 events. 1154/2357 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16171 event pairs, 826 based on Foata normal form. 4/1771 useless extension candidates. Maximal degree in co-relation 3934. Up to 1545 conditions per place. [2024-11-28 04:03:17,590 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 63 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-11-28 04:03:17,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 470 flow [2024-11-28 04:03:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:03:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-28 04:03:17,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-11-28 04:03:17,594 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 314 flow. Second operand 4 states and 242 transitions. [2024-11-28 04:03:17,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 470 flow [2024-11-28 04:03:17,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 110 transitions, 432 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 04:03:17,600 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 340 flow [2024-11-28 04:03:17,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-11-28 04:03:17,602 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -1 predicate places. [2024-11-28 04:03:17,602 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 340 flow [2024-11-28 04:03:17,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 04:03:17,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:17,603 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:17,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:03:17,603 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:17,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash 802314218, now seen corresponding path program 1 times [2024-11-28 04:03:17,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:17,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709725197] [2024-11-28 04:03:17,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:17,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:17,797 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 04:03:17,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:17,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709725197] [2024-11-28 04:03:17,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709725197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:17,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:17,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:03:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719382730] [2024-11-28 04:03:17,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:17,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:03:17,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:17,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:03:17,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:03:17,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-28 04:03:17,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 04:03:17,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:17,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-28 04:03:17,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:18,235 INFO L124 PetriNetUnfolderBase]: 1153/2356 cut-off events. [2024-11-28 04:03:18,236 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-28 04:03:18,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2356 events. 1153/2356 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16175 event pairs, 826 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 3946. Up to 1549 conditions per place. [2024-11-28 04:03:18,252 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 56 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-28 04:03:18,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 452 flow [2024-11-28 04:03:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:03:18,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:03:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-11-28 04:03:18,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-11-28 04:03:18,254 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 340 flow. Second operand 3 states and 215 transitions. [2024-11-28 04:03:18,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 452 flow [2024-11-28 04:03:18,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:03:18,257 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 340 flow [2024-11-28 04:03:18,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-11-28 04:03:18,258 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-11-28 04:03:18,258 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 340 flow [2024-11-28 04:03:18,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 04:03:18,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:18,259 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:03:18,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:03:18,259 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:18,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash 803936182, now seen corresponding path program 1 times [2024-11-28 04:03:18,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:18,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699107992] [2024-11-28 04:03:18,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:18,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:18,342 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 04:03:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:18,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699107992] [2024-11-28 04:03:18,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699107992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:18,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634743009] [2024-11-28 04:03:18,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:18,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:18,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:18,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:18,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:03:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:18,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:03:18,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:18,484 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 04:03:18,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:18,549 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 04:03:18,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634743009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:18,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:18,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 04:03:18,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960044081] [2024-11-28 04:03:18,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:18,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:03:18,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:18,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:03:18,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:03:18,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-28 04:03:18,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 340 flow. Second operand has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 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 04:03:18,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:18,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-28 04:03:18,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:19,222 INFO L124 PetriNetUnfolderBase]: 1162/2392 cut-off events. [2024-11-28 04:03:19,222 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-28 04:03:19,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 2392 events. 1162/2392 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16391 event pairs, 826 based on Foata normal form. 9/1810 useless extension candidates. Maximal degree in co-relation 4107. Up to 1550 conditions per place. [2024-11-28 04:03:19,242 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 51 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-11-28 04:03:19,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 134 transitions, 657 flow [2024-11-28 04:03:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:03:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:03:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2024-11-28 04:03:19,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5561904761904762 [2024-11-28 04:03:19,245 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 340 flow. Second operand 10 states and 584 transitions. [2024-11-28 04:03:19,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 134 transitions, 657 flow [2024-11-28 04:03:19,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 134 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:03:19,250 INFO L231 Difference]: Finished difference. Result has 112 places, 134 transitions, 603 flow [2024-11-28 04:03:19,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=112, PETRI_TRANSITIONS=134} [2024-11-28 04:03:19,251 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-28 04:03:19,251 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 134 transitions, 603 flow [2024-11-28 04:03:19,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 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 04:03:19,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:19,252 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:19,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:19,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:19,457 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:19,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1324548969, now seen corresponding path program 1 times [2024-11-28 04:03:19,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:19,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593867566] [2024-11-28 04:03:19,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:19,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:19,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:19,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593867566] [2024-11-28 04:03:19,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593867566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:19,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:19,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:19,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743797951] [2024-11-28 04:03:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:19,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:03:19,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:19,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:03:19,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:03:19,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-28 04:03:19,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 04:03:19,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:19,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-28 04:03:19,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:20,079 INFO L124 PetriNetUnfolderBase]: 1160/2390 cut-off events. [2024-11-28 04:03:20,080 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-28 04:03:20,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2390 events. 1160/2390 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16268 event pairs, 826 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 4078. Up to 1563 conditions per place. [2024-11-28 04:03:20,100 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 71 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2024-11-28 04:03:20,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 755 flow [2024-11-28 04:03:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:03:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-11-28 04:03:20,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-28 04:03:20,103 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 603 flow. Second operand 4 states and 275 transitions. [2024-11-28 04:03:20,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 755 flow [2024-11-28 04:03:20,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 707 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-28 04:03:20,108 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 565 flow [2024-11-28 04:03:20,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-11-28 04:03:20,109 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-28 04:03:20,109 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 565 flow [2024-11-28 04:03:20,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 04:03:20,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:20,110 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 04:03:20,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:03:20,110 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:20,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash -120798315, now seen corresponding path program 2 times [2024-11-28 04:03:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:20,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702837984] [2024-11-28 04:03:20,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:20,127 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:03:20,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:20,167 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 04:03:20,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702837984] [2024-11-28 04:03:20,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702837984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815911741] [2024-11-28 04:03:20,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:20,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:20,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:20,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:20,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:03:20,263 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:03:20,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:20,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:03:20,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:20,301 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 04:03:20,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:20,346 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 04:03:20,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815911741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:20,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:20,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 04:03:20,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666008801] [2024-11-28 04:03:20,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:20,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:03:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:20,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:03:20,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:03:20,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-28 04:03:20,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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 04:03:20,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:20,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-28 04:03:20,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:20,841 INFO L124 PetriNetUnfolderBase]: 1160/2389 cut-off events. [2024-11-28 04:03:20,842 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-28 04:03:20,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 2389 events. 1160/2389 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16281 event pairs, 826 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4065. Up to 1567 conditions per place. [2024-11-28 04:03:20,857 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 70 selfloop transitions, 15 changer transitions 0/131 dead transitions. [2024-11-28 04:03:20,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 131 transitions, 725 flow [2024-11-28 04:03:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:03:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2024-11-28 04:03:20,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-28 04:03:20,859 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 565 flow. Second operand 4 states and 246 transitions. [2024-11-28 04:03:20,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 131 transitions, 725 flow [2024-11-28 04:03:20,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 701 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:03:20,863 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 561 flow [2024-11-28 04:03:20,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=561, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-11-28 04:03:20,864 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-28 04:03:20,865 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 561 flow [2024-11-28 04:03:20,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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 04:03:20,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:20,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:20,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:03:21,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:03:21,070 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:21,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1947721113, now seen corresponding path program 1 times [2024-11-28 04:03:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:21,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421861935] [2024-11-28 04:03:21,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:21,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:21,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:21,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421861935] [2024-11-28 04:03:21,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421861935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:21,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029889426] [2024-11-28 04:03:21,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:21,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:21,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:21,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:21,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:03:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:21,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:03:21,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:21,807 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 04:03:21,844 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 04:03:21,917 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:21,917 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 04:03:21,943 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 04:03:21,970 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 17 treesize of output 9 [2024-11-28 04:03:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:21,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:22,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:22,203 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 04:03:22,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:22,223 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 04:03:22,235 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 04:03:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:22,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029889426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:22,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:22,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-28 04:03:22,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695657025] [2024-11-28 04:03:22,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:22,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:03:22,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:22,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:03:22,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2024-11-28 04:03:22,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-11-28 04:03:22,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 561 flow. Second operand has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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 04:03:22,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:22,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-11-28 04:03:22,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:23,470 INFO L124 PetriNetUnfolderBase]: 1158/2392 cut-off events. [2024-11-28 04:03:23,471 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-28 04:03:23,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2392 events. 1158/2392 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16261 event pairs, 826 based on Foata normal form. 0/1805 useless extension candidates. Maximal degree in co-relation 4103. Up to 1529 conditions per place. [2024-11-28 04:03:23,494 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 85 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2024-11-28 04:03:23,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 139 transitions, 795 flow [2024-11-28 04:03:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:03:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:03:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 487 transitions. [2024-11-28 04:03:23,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42164502164502166 [2024-11-28 04:03:23,499 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 561 flow. Second operand 11 states and 487 transitions. [2024-11-28 04:03:23,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 139 transitions, 795 flow [2024-11-28 04:03:23,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 139 transitions, 765 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:03:23,505 INFO L231 Difference]: Finished difference. Result has 117 places, 130 transitions, 577 flow [2024-11-28 04:03:23,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=577, PETRI_PLACES=117, PETRI_TRANSITIONS=130} [2024-11-28 04:03:23,507 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 17 predicate places. [2024-11-28 04:03:23,508 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 130 transitions, 577 flow [2024-11-28 04:03:23,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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 04:03:23,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:23,509 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 04:03:23,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:23,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:03:23,714 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:23,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash 249808597, now seen corresponding path program 1 times [2024-11-28 04:03:23,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:23,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6787270] [2024-11-28 04:03:23,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:24,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6787270] [2024-11-28 04:03:24,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6787270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113989776] [2024-11-28 04:03:24,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:24,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:24,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:24,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:24,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:03:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:24,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:03:24,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:24,354 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 04:03:24,379 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 04:03:24,425 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:24,426 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 04:03:24,437 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 04:03:24,451 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 15 treesize of output 7 [2024-11-28 04:03:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:24,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:24,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:24,596 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 04:03:24,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:24,607 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 04:03:24,614 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 04:03:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113989776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:24,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:24,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-28 04:03:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539242256] [2024-11-28 04:03:24,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:24,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:03:24,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:24,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:03:24,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=143, Unknown=3, NotChecked=0, Total=182 [2024-11-28 04:03:24,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-11-28 04:03:24,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 130 transitions, 577 flow. Second operand has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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 04:03:24,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:24,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-11-28 04:03:24,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:25,658 INFO L124 PetriNetUnfolderBase]: 1158/2391 cut-off events. [2024-11-28 04:03:25,659 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-28 04:03:25,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 2391 events. 1158/2391 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16273 event pairs, 826 based on Foata normal form. 1/1808 useless extension candidates. Maximal degree in co-relation 4105. Up to 1533 conditions per place. [2024-11-28 04:03:25,674 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 78 selfloop transitions, 25 changer transitions 0/133 dead transitions. [2024-11-28 04:03:25,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 133 transitions, 787 flow [2024-11-28 04:03:25,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:03:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:03:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 479 transitions. [2024-11-28 04:03:25,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4147186147186147 [2024-11-28 04:03:25,677 INFO L175 Difference]: Start difference. First operand has 117 places, 130 transitions, 577 flow. Second operand 11 states and 479 transitions. [2024-11-28 04:03:25,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 133 transitions, 787 flow [2024-11-28 04:03:25,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 133 transitions, 760 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:03:25,686 INFO L231 Difference]: Finished difference. Result has 122 places, 129 transitions, 596 flow [2024-11-28 04:03:25,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=596, PETRI_PLACES=122, PETRI_TRANSITIONS=129} [2024-11-28 04:03:25,687 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 22 predicate places. [2024-11-28 04:03:25,687 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 129 transitions, 596 flow [2024-11-28 04:03:25,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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 04:03:25,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:25,689 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:25,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:25,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:25,893 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:25,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -845868510, now seen corresponding path program 1 times [2024-11-28 04:03:25,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:25,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670841757] [2024-11-28 04:03:25,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:25,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:26,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:26,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670841757] [2024-11-28 04:03:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670841757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:26,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327357046] [2024-11-28 04:03:26,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:26,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:26,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:26,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:26,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:03:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:26,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:03:26,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:26,589 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 04:03:26,618 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 04:03:26,658 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:03:26,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-28 04:03:26,678 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 04:03:26,713 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:26,714 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 04:03:26,728 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 04:03:26,763 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 17 treesize of output 9 [2024-11-28 04:03:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:26,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:26,885 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_155 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_155) c_~A~0.base) c_~A~0.offset)))) is different from false [2024-11-28 04:03:27,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:27,130 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 27 treesize of output 28 [2024-11-28 04:03:27,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:27,145 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 143 treesize of output 135 [2024-11-28 04:03:27,159 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 27 treesize of output 25 [2024-11-28 04:03:27,169 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 28 treesize of output 24 [2024-11-28 04:03:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 04:03:27,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327357046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:27,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:27,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-28 04:03:27,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120998675] [2024-11-28 04:03:27,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:27,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:03:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:27,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:03:27,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=225, Unknown=2, NotChecked=30, Total=306 [2024-11-28 04:03:27,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-28 04:03:27,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 129 transitions, 596 flow. Second operand has 18 states, 18 states have (on average 34.611111111111114) internal successors, (623), 18 states have internal predecessors, (623), 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 04:03:27,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:27,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-28 04:03:27,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:28,596 INFO L124 PetriNetUnfolderBase]: 1157/2387 cut-off events. [2024-11-28 04:03:28,596 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-28 04:03:28,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 2387 events. 1157/2387 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16282 event pairs, 826 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4107. Up to 1530 conditions per place. [2024-11-28 04:03:28,613 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 80 selfloop transitions, 28 changer transitions 0/134 dead transitions. [2024-11-28 04:03:28,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 820 flow [2024-11-28 04:03:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:03:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:03:28,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 547 transitions. [2024-11-28 04:03:28,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37210884353741497 [2024-11-28 04:03:28,617 INFO L175 Difference]: Start difference. First operand has 122 places, 129 transitions, 596 flow. Second operand 14 states and 547 transitions. [2024-11-28 04:03:28,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 820 flow [2024-11-28 04:03:28,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 134 transitions, 768 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-28 04:03:28,622 INFO L231 Difference]: Finished difference. Result has 126 places, 128 transitions, 608 flow [2024-11-28 04:03:28,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=608, PETRI_PLACES=126, PETRI_TRANSITIONS=128} [2024-11-28 04:03:28,623 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2024-11-28 04:03:28,623 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 128 transitions, 608 flow [2024-11-28 04:03:28,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 34.611111111111114) internal successors, (623), 18 states have internal predecessors, (623), 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 04:03:28,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:28,624 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:28,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:03:28,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:28,825 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:28,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash -452119023, now seen corresponding path program 1 times [2024-11-28 04:03:28,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:28,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227292065] [2024-11-28 04:03:28,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:28,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:29,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227292065] [2024-11-28 04:03:29,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227292065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458130506] [2024-11-28 04:03:29,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:29,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:29,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:29,445 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:29,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:03:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:29,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:03:29,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:29,569 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 04:03:29,604 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 04:03:29,645 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:03:29,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-28 04:03:29,662 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 04:03:29,690 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:29,690 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 04:03:29,701 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 04:03:29,713 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 15 treesize of output 7 [2024-11-28 04:03:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:29,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:30,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:30,070 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 25 treesize of output 26 [2024-11-28 04:03:30,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:30,085 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 63 treesize of output 59 [2024-11-28 04:03:30,097 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 48 treesize of output 44 [2024-11-28 04:03:30,107 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 04:03:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:30,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458130506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:30,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:30,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-28 04:03:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710533004] [2024-11-28 04:03:30,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:30,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:03:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:30,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:03:30,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=282, Unknown=5, NotChecked=0, Total=342 [2024-11-28 04:03:30,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-28 04:03:30,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 128 transitions, 608 flow. Second operand has 19 states, 19 states have (on average 34.578947368421055) internal successors, (657), 19 states have internal predecessors, (657), 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 04:03:30,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:30,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-28 04:03:30,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:31,481 INFO L124 PetriNetUnfolderBase]: 1157/2387 cut-off events. [2024-11-28 04:03:31,481 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-28 04:03:31,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 2387 events. 1157/2387 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16249 event pairs, 826 based on Foata normal form. 4/1812 useless extension candidates. Maximal degree in co-relation 4148. Up to 1534 conditions per place. [2024-11-28 04:03:31,500 INFO L140 encePairwiseOnDemand]: 84/105 looper letters, 74 selfloop transitions, 32 changer transitions 1/133 dead transitions. [2024-11-28 04:03:31,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 133 transitions, 844 flow [2024-11-28 04:03:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:03:31,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 04:03:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 639 transitions. [2024-11-28 04:03:31,504 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35798319327731093 [2024-11-28 04:03:31,504 INFO L175 Difference]: Start difference. First operand has 126 places, 128 transitions, 608 flow. Second operand 17 states and 639 transitions. [2024-11-28 04:03:31,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 133 transitions, 844 flow [2024-11-28 04:03:31,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 822 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-28 04:03:31,510 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 679 flow [2024-11-28 04:03:31,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=679, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2024-11-28 04:03:31,511 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 40 predicate places. [2024-11-28 04:03:31,511 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 679 flow [2024-11-28 04:03:31,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 34.578947368421055) internal successors, (657), 19 states have internal predecessors, (657), 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 04:03:31,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:31,512 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:31,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:31,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:31,713 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:31,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1557112635, now seen corresponding path program 1 times [2024-11-28 04:03:31,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:31,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672692004] [2024-11-28 04:03:31,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:03:31,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:31,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672692004] [2024-11-28 04:03:31,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672692004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:31,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057618115] [2024-11-28 04:03:31,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:31,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:31,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:31,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:31,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:03:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:32,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:03:32,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:03:32,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:32,274 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:03:32,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057618115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:32,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:32,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-28 04:03:32,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449582549] [2024-11-28 04:03:32,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:32,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:03:32,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:32,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:03:32,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:03:32,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-28 04:03:32,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 679 flow. Second operand has 19 states, 19 states have (on average 50.21052631578947) internal successors, (954), 19 states have internal predecessors, (954), 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 04:03:32,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:32,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-28 04:03:32,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:33,827 INFO L124 PetriNetUnfolderBase]: 2301/4722 cut-off events. [2024-11-28 04:03:33,828 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2024-11-28 04:03:33,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8239 conditions, 4722 events. 2301/4722 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34379 event pairs, 1652 based on Foata normal form. 2/3585 useless extension candidates. Maximal degree in co-relation 8188. Up to 1551 conditions per place. [2024-11-28 04:03:33,869 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 94 selfloop transitions, 43 changer transitions 0/180 dead transitions. [2024-11-28 04:03:33,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 180 transitions, 1178 flow [2024-11-28 04:03:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:03:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:03:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 599 transitions. [2024-11-28 04:03:33,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5704761904761905 [2024-11-28 04:03:33,872 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 679 flow. Second operand 10 states and 599 transitions. [2024-11-28 04:03:33,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 180 transitions, 1178 flow [2024-11-28 04:03:33,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 180 transitions, 1112 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-28 04:03:33,879 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 776 flow [2024-11-28 04:03:33,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=776, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2024-11-28 04:03:33,882 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 41 predicate places. [2024-11-28 04:03:33,882 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 776 flow [2024-11-28 04:03:33,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.21052631578947) internal successors, (954), 19 states have internal predecessors, (954), 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 04:03:33,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:33,883 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:33,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:34,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:03:34,084 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:34,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -985307647, now seen corresponding path program 1 times [2024-11-28 04:03:34,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:34,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865202759] [2024-11-28 04:03:34,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:03:34,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:34,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865202759] [2024-11-28 04:03:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865202759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:34,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969242991] [2024-11-28 04:03:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:34,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:34,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:34,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:34,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 105 [2024-11-28 04:03:34,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 776 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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 04:03:34,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:34,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 105 [2024-11-28 04:03:34,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:35,028 INFO L124 PetriNetUnfolderBase]: 2301/4710 cut-off events. [2024-11-28 04:03:35,028 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2024-11-28 04:03:35,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 4710 events. 2301/4710 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34462 event pairs, 1652 based on Foata normal form. 2/3560 useless extension candidates. Maximal degree in co-relation 8206. Up to 3107 conditions per place. [2024-11-28 04:03:35,073 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 87 selfloop transitions, 20 changer transitions 0/139 dead transitions. [2024-11-28 04:03:35,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 994 flow [2024-11-28 04:03:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:03:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-11-28 04:03:35,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-11-28 04:03:35,075 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 776 flow. Second operand 6 states and 303 transitions. [2024-11-28 04:03:35,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 139 transitions, 994 flow [2024-11-28 04:03:35,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 139 transitions, 932 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 04:03:35,084 INFO L231 Difference]: Finished difference. Result has 142 places, 139 transitions, 784 flow [2024-11-28 04:03:35,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=784, PETRI_PLACES=142, PETRI_TRANSITIONS=139} [2024-11-28 04:03:35,085 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 42 predicate places. [2024-11-28 04:03:35,086 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 139 transitions, 784 flow [2024-11-28 04:03:35,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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 04:03:35,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:35,087 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2024-11-28 04:03:35,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:03:35,087 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:35,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:35,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1254396838, now seen corresponding path program 2 times [2024-11-28 04:03:35,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:35,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830334067] [2024-11-28 04:03:35,088 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:35,110 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:35,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:03:35,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830334067] [2024-11-28 04:03:35,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830334067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874550991] [2024-11-28 04:03:35,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:35,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:35,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:35,186 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:35,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:03:35,298 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:35,298 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:35,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:03:35,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:03:35,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:03:35,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874550991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:35,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:35,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 04:03:35,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475656008] [2024-11-28 04:03:35,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:35,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:35,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:35,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:35,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-28 04:03:35,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 139 transitions, 784 flow. Second operand has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 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 04:03:35,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:35,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-28 04:03:35,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:36,126 INFO L124 PetriNetUnfolderBase]: 2303/4708 cut-off events. [2024-11-28 04:03:36,127 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2024-11-28 04:03:36,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8238 conditions, 4708 events. 2303/4708 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34412 event pairs, 1652 based on Foata normal form. 2/3558 useless extension candidates. Maximal degree in co-relation 8185. Up to 3075 conditions per place. [2024-11-28 04:03:36,174 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 54 selfloop transitions, 40 changer transitions 0/137 dead transitions. [2024-11-28 04:03:36,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 952 flow [2024-11-28 04:03:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:03:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-28 04:03:36,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-28 04:03:36,177 INFO L175 Difference]: Start difference. First operand has 142 places, 139 transitions, 784 flow. Second operand 5 states and 294 transitions. [2024-11-28 04:03:36,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 952 flow [2024-11-28 04:03:36,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 137 transitions, 892 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-28 04:03:36,183 INFO L231 Difference]: Finished difference. Result has 136 places, 137 transitions, 784 flow [2024-11-28 04:03:36,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=784, PETRI_PLACES=136, PETRI_TRANSITIONS=137} [2024-11-28 04:03:36,185 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 36 predicate places. [2024-11-28 04:03:36,185 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 137 transitions, 784 flow [2024-11-28 04:03:36,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 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 04:03:36,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:36,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:36,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:36,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:36,391 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:36,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1836199317, now seen corresponding path program 1 times [2024-11-28 04:03:36,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:36,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591955624] [2024-11-28 04:03:36,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:03:36,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:36,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591955624] [2024-11-28 04:03:36,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591955624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:36,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:36,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:36,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101953998] [2024-11-28 04:03:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:36,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:03:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:36,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:03:36,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:03:36,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-11-28 04:03:36,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 137 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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 04:03:36,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:36,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-11-28 04:03:36,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:37,664 INFO L124 PetriNetUnfolderBase]: 4943/8344 cut-off events. [2024-11-28 04:03:37,664 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-11-28 04:03:37,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15453 conditions, 8344 events. 4943/8344 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 57816 event pairs, 2588 based on Foata normal form. 244/6318 useless extension candidates. Maximal degree in co-relation 15407. Up to 5080 conditions per place. [2024-11-28 04:03:37,727 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 133 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2024-11-28 04:03:37,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 178 transitions, 1144 flow [2024-11-28 04:03:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:03:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-11-28 04:03:37,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-28 04:03:37,729 INFO L175 Difference]: Start difference. First operand has 136 places, 137 transitions, 784 flow. Second operand 4 states and 304 transitions. [2024-11-28 04:03:37,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 178 transitions, 1144 flow [2024-11-28 04:03:37,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 178 transitions, 1069 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:03:37,736 INFO L231 Difference]: Finished difference. Result has 138 places, 140 transitions, 738 flow [2024-11-28 04:03:37,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=738, PETRI_PLACES=138, PETRI_TRANSITIONS=140} [2024-11-28 04:03:37,737 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 38 predicate places. [2024-11-28 04:03:37,737 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 140 transitions, 738 flow [2024-11-28 04:03:37,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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 04:03:37,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:37,737 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:37,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:03:37,737 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:37,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash 553816780, now seen corresponding path program 1 times [2024-11-28 04:03:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:37,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971123840] [2024-11-28 04:03:37,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:03:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971123840] [2024-11-28 04:03:37,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971123840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:37,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:37,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:03:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223917987] [2024-11-28 04:03:37,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:37,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:03:37,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:37,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:03:37,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:03:37,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-28 04:03:37,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 04:03:37,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:37,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-28 04:03:37,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:39,149 INFO L124 PetriNetUnfolderBase]: 6085/11342 cut-off events. [2024-11-28 04:03:39,149 INFO L125 PetriNetUnfolderBase]: For 3837/4169 co-relation queries the response was YES. [2024-11-28 04:03:39,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23752 conditions, 11342 events. 6085/11342 cut-off events. For 3837/4169 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 89690 event pairs, 2656 based on Foata normal form. 0/8756 useless extension candidates. Maximal degree in co-relation 23704. Up to 4974 conditions per place. [2024-11-28 04:03:39,218 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 116 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2024-11-28 04:03:39,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 162 transitions, 1041 flow [2024-11-28 04:03:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:03:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:03:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2024-11-28 04:03:39,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7396825396825397 [2024-11-28 04:03:39,220 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 738 flow. Second operand 3 states and 233 transitions. [2024-11-28 04:03:39,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 162 transitions, 1041 flow [2024-11-28 04:03:39,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 162 transitions, 1035 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:03:39,231 INFO L231 Difference]: Finished difference. Result has 140 places, 142 transitions, 756 flow [2024-11-28 04:03:39,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=756, PETRI_PLACES=140, PETRI_TRANSITIONS=142} [2024-11-28 04:03:39,232 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 40 predicate places. [2024-11-28 04:03:39,232 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 142 transitions, 756 flow [2024-11-28 04:03:39,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 04:03:39,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:39,232 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:39,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:03:39,233 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:39,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash 553816775, now seen corresponding path program 1 times [2024-11-28 04:03:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236370856] [2024-11-28 04:03:39,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:39,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:39,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:39,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236370856] [2024-11-28 04:03:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236370856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903807470] [2024-11-28 04:03:39,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:39,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:39,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:39,372 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:39,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:03:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:39,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:03:39,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:39,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:39,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903807470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:39,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:39,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 04:03:39,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245947753] [2024-11-28 04:03:39,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:39,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:03:39,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:39,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:03:39,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:03:39,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-11-28 04:03:39,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 142 transitions, 756 flow. Second operand has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 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 04:03:39,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:39,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-11-28 04:03:39,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:41,062 INFO L124 PetriNetUnfolderBase]: 4009/6775 cut-off events. [2024-11-28 04:03:41,062 INFO L125 PetriNetUnfolderBase]: For 2929/3316 co-relation queries the response was YES. [2024-11-28 04:03:41,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15490 conditions, 6775 events. 4009/6775 cut-off events. For 2929/3316 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 41606 event pairs, 2833 based on Foata normal form. 77/5543 useless extension candidates. Maximal degree in co-relation 15441. Up to 4648 conditions per place. [2024-11-28 04:03:41,095 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 110 selfloop transitions, 45 changer transitions 0/197 dead transitions. [2024-11-28 04:03:41,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 197 transitions, 1287 flow [2024-11-28 04:03:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:03:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:03:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 639 transitions. [2024-11-28 04:03:41,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5532467532467532 [2024-11-28 04:03:41,098 INFO L175 Difference]: Start difference. First operand has 140 places, 142 transitions, 756 flow. Second operand 11 states and 639 transitions. [2024-11-28 04:03:41,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 197 transitions, 1287 flow [2024-11-28 04:03:41,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 197 transitions, 1282 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:03:41,107 INFO L231 Difference]: Finished difference. Result has 151 places, 144 transitions, 863 flow [2024-11-28 04:03:41,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=863, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2024-11-28 04:03:41,108 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 51 predicate places. [2024-11-28 04:03:41,108 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 863 flow [2024-11-28 04:03:41,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 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 04:03:41,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:41,108 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:41,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:41,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:03:41,309 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:41,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:41,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1509261836, now seen corresponding path program 1 times [2024-11-28 04:03:41,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:41,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021321375] [2024-11-28 04:03:41,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:41,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:03:41,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021321375] [2024-11-28 04:03:41,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021321375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540909294] [2024-11-28 04:03:41,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:41,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:41,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:41,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:03:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:41,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:03:41,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:03:41,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:03:41,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540909294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:41,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:41,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 04:03:41,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434253793] [2024-11-28 04:03:41,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:41,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:03:41,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:41,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:03:41,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:03:41,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-28 04:03:41,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 144 transitions, 863 flow. Second operand has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 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 04:03:41,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:41,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-28 04:03:41,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:42,865 INFO L124 PetriNetUnfolderBase]: 3163/6334 cut-off events. [2024-11-28 04:03:42,865 INFO L125 PetriNetUnfolderBase]: For 2771/2892 co-relation queries the response was YES. [2024-11-28 04:03:42,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13487 conditions, 6334 events. 3163/6334 cut-off events. For 2771/2892 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 49127 event pairs, 2184 based on Foata normal form. 38/5105 useless extension candidates. Maximal degree in co-relation 13436. Up to 3850 conditions per place. [2024-11-28 04:03:42,902 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 100 selfloop transitions, 45 changer transitions 0/188 dead transitions. [2024-11-28 04:03:42,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 188 transitions, 1330 flow [2024-11-28 04:03:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:03:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:03:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 646 transitions. [2024-11-28 04:03:42,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5593073593073593 [2024-11-28 04:03:42,905 INFO L175 Difference]: Start difference. First operand has 151 places, 144 transitions, 863 flow. Second operand 11 states and 646 transitions. [2024-11-28 04:03:42,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 188 transitions, 1330 flow [2024-11-28 04:03:42,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 188 transitions, 1246 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 04:03:42,920 INFO L231 Difference]: Finished difference. Result has 155 places, 146 transitions, 889 flow [2024-11-28 04:03:42,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=889, PETRI_PLACES=155, PETRI_TRANSITIONS=146} [2024-11-28 04:03:42,921 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 55 predicate places. [2024-11-28 04:03:42,921 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 146 transitions, 889 flow [2024-11-28 04:03:42,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 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 04:03:42,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:42,922 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:42,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:03:43,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:03:43,125 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:43,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1068509462, now seen corresponding path program 1 times [2024-11-28 04:03:43,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:43,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648242976] [2024-11-28 04:03:43,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:43,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:03:43,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:43,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648242976] [2024-11-28 04:03:43,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648242976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:43,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:43,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79119266] [2024-11-28 04:03:43,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:43,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:03:43,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:43,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:03:43,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:03:43,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-28 04:03:43,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 146 transitions, 889 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 04:03:43,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:43,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-28 04:03:43,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:45,245 INFO L124 PetriNetUnfolderBase]: 7309/12773 cut-off events. [2024-11-28 04:03:45,245 INFO L125 PetriNetUnfolderBase]: For 9379/9789 co-relation queries the response was YES. [2024-11-28 04:03:45,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30216 conditions, 12773 events. 7309/12773 cut-off events. For 9379/9789 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 94387 event pairs, 3698 based on Foata normal form. 231/10511 useless extension candidates. Maximal degree in co-relation 30129. Up to 6584 conditions per place. [2024-11-28 04:03:45,294 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 168 selfloop transitions, 3 changer transitions 0/211 dead transitions. [2024-11-28 04:03:45,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 211 transitions, 1516 flow [2024-11-28 04:03:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:03:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-11-28 04:03:45,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-28 04:03:45,295 INFO L175 Difference]: Start difference. First operand has 155 places, 146 transitions, 889 flow. Second operand 4 states and 304 transitions. [2024-11-28 04:03:45,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 211 transitions, 1516 flow [2024-11-28 04:03:45,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 1432 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 04:03:45,310 INFO L231 Difference]: Finished difference. Result has 152 places, 148 transitions, 827 flow [2024-11-28 04:03:45,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=827, PETRI_PLACES=152, PETRI_TRANSITIONS=148} [2024-11-28 04:03:45,311 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 52 predicate places. [2024-11-28 04:03:45,311 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 148 transitions, 827 flow [2024-11-28 04:03:45,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 04:03:45,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:45,311 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:45,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:03:45,311 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:45,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1053658422, now seen corresponding path program 2 times [2024-11-28 04:03:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525940716] [2024-11-28 04:03:45,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:45,345 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:45,346 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:03:45,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525940716] [2024-11-28 04:03:45,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525940716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637368141] [2024-11-28 04:03:45,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:45,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:45,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:45,906 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:45,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:03:46,046 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:46,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:46,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 04:03:46,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:46,056 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 04:03:46,115 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 19 treesize of output 1 [2024-11-28 04:03:46,151 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:46,151 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 04:03:46,175 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 20 treesize of output 15 [2024-11-28 04:03:46,193 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 20 treesize of output 15 [2024-11-28 04:03:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:03:46,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:46,334 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_392 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_392) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2024-11-28 04:03:46,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:46,407 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 26 treesize of output 27 [2024-11-28 04:03:46,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:46,417 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 43 treesize of output 37 [2024-11-28 04:03:46,422 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 13 treesize of output 9 [2024-11-28 04:03:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 4 not checked. [2024-11-28 04:03:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637368141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:46,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-28 04:03:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921598851] [2024-11-28 04:03:46,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:46,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:03:46,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:46,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:03:46,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=435, Unknown=1, NotChecked=42, Total=552 [2024-11-28 04:03:46,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-28 04:03:46,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 148 transitions, 827 flow. Second operand has 24 states, 24 states have (on average 47.333333333333336) internal successors, (1136), 24 states have internal predecessors, (1136), 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 04:03:46,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:46,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-28 04:03:46,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:48,925 INFO L124 PetriNetUnfolderBase]: 5903/10124 cut-off events. [2024-11-28 04:03:48,925 INFO L125 PetriNetUnfolderBase]: For 9557/10524 co-relation queries the response was YES. [2024-11-28 04:03:48,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26238 conditions, 10124 events. 5903/10124 cut-off events. For 9557/10524 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 68929 event pairs, 1507 based on Foata normal form. 200/8593 useless extension candidates. Maximal degree in co-relation 26115. Up to 2739 conditions per place. [2024-11-28 04:03:48,999 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 165 selfloop transitions, 43 changer transitions 0/247 dead transitions. [2024-11-28 04:03:48,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 247 transitions, 1654 flow [2024-11-28 04:03:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:03:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 04:03:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 853 transitions. [2024-11-28 04:03:49,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5077380952380952 [2024-11-28 04:03:49,002 INFO L175 Difference]: Start difference. First operand has 152 places, 148 transitions, 827 flow. Second operand 16 states and 853 transitions. [2024-11-28 04:03:49,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 247 transitions, 1654 flow [2024-11-28 04:03:49,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 247 transitions, 1644 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:03:49,021 INFO L231 Difference]: Finished difference. Result has 168 places, 154 transitions, 970 flow [2024-11-28 04:03:49,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=970, PETRI_PLACES=168, PETRI_TRANSITIONS=154} [2024-11-28 04:03:49,022 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 68 predicate places. [2024-11-28 04:03:49,022 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 154 transitions, 970 flow [2024-11-28 04:03:49,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 47.333333333333336) internal successors, (1136), 24 states have internal predecessors, (1136), 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 04:03:49,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:49,023 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:49,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:49,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:49,227 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:49,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1053658423, now seen corresponding path program 1 times [2024-11-28 04:03:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:49,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741916042] [2024-11-28 04:03:49,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:49,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:50,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:50,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741916042] [2024-11-28 04:03:50,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741916042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:50,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659690777] [2024-11-28 04:03:50,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:50,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:50,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:50,056 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:50,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:03:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:50,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:03:50,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:50,216 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 04:03:50,292 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 19 treesize of output 1 [2024-11-28 04:03:50,366 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:50,367 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 04:03:50,398 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 04:03:50,413 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 04:03:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:03:50,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:50,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:50,691 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 04:03:50,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:50,701 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 37 treesize of output 31 [2024-11-28 04:03:50,706 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 7 [2024-11-28 04:03:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:03:50,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659690777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:50,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:50,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 27 [2024-11-28 04:03:50,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032376962] [2024-11-28 04:03:50,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:50,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:03:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:50,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:03:50,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=663, Unknown=4, NotChecked=0, Total=756 [2024-11-28 04:03:51,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-28 04:03:51,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 154 transitions, 970 flow. Second operand has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 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 04:03:51,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:51,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-28 04:03:51,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:53,753 INFO L124 PetriNetUnfolderBase]: 6991/11492 cut-off events. [2024-11-28 04:03:53,753 INFO L125 PetriNetUnfolderBase]: For 13668/14779 co-relation queries the response was YES. [2024-11-28 04:03:53,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33484 conditions, 11492 events. 6991/11492 cut-off events. For 13668/14779 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 75370 event pairs, 1863 based on Foata normal form. 213/9624 useless extension candidates. Maximal degree in co-relation 33359. Up to 3227 conditions per place. [2024-11-28 04:03:53,819 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 154 selfloop transitions, 50 changer transitions 0/242 dead transitions. [2024-11-28 04:03:53,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 242 transitions, 1751 flow [2024-11-28 04:03:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:03:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 04:03:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1061 transitions. [2024-11-28 04:03:53,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4811791383219955 [2024-11-28 04:03:53,821 INFO L175 Difference]: Start difference. First operand has 168 places, 154 transitions, 970 flow. Second operand 21 states and 1061 transitions. [2024-11-28 04:03:53,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 242 transitions, 1751 flow [2024-11-28 04:03:53,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 242 transitions, 1695 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-28 04:03:53,841 INFO L231 Difference]: Finished difference. Result has 182 places, 157 transitions, 1054 flow [2024-11-28 04:03:53,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1054, PETRI_PLACES=182, PETRI_TRANSITIONS=157} [2024-11-28 04:03:53,842 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 82 predicate places. [2024-11-28 04:03:53,842 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 157 transitions, 1054 flow [2024-11-28 04:03:53,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 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 04:03:53,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:53,843 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:53,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:54,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:54,046 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:54,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1053658425, now seen corresponding path program 1 times [2024-11-28 04:03:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:54,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477093071] [2024-11-28 04:03:54,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:54,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:54,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477093071] [2024-11-28 04:03:54,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477093071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:54,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731515926] [2024-11-28 04:03:54,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:54,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:54,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:54,664 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:54,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:03:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:54,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:03:54,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:54,822 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 04:03:54,890 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 19 treesize of output 1 [2024-11-28 04:03:54,941 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:03:54,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-28 04:03:54,979 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 20 treesize of output 15 [2024-11-28 04:03:55,006 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 20 treesize of output 15 [2024-11-28 04:03:55,052 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:55,053 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 04:03:55,084 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 20 treesize of output 15 [2024-11-28 04:03:55,102 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 20 treesize of output 15 [2024-11-28 04:03:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:55,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:55,262 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_475 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_475) c_~A~0.base) (+ c_~A~0.offset 4))))) is different from false [2024-11-28 04:03:55,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:55,504 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 29 treesize of output 30 [2024-11-28 04:03:55,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:55,515 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 81 treesize of output 75 [2024-11-28 04:03:55,522 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 62 treesize of output 54 [2024-11-28 04:03:55,529 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 28 treesize of output 24 [2024-11-28 04:03:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2024-11-28 04:03:55,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731515926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:55,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:55,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-28 04:03:55,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14845735] [2024-11-28 04:03:55,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:55,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:03:55,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:55,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:03:55,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=608, Unknown=2, NotChecked=50, Total=756 [2024-11-28 04:03:55,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-28 04:03:55,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 157 transitions, 1054 flow. Second operand has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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 04:03:55,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:55,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-28 04:03:55,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:58,422 INFO L124 PetriNetUnfolderBase]: 5620/9581 cut-off events. [2024-11-28 04:03:58,422 INFO L125 PetriNetUnfolderBase]: For 13110/14119 co-relation queries the response was YES. [2024-11-28 04:03:58,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29034 conditions, 9581 events. 5620/9581 cut-off events. For 13110/14119 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 64502 event pairs, 2947 based on Foata normal form. 219/8711 useless extension candidates. Maximal degree in co-relation 28875. Up to 4890 conditions per place. [2024-11-28 04:03:58,490 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 154 selfloop transitions, 46 changer transitions 0/239 dead transitions. [2024-11-28 04:03:58,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 239 transitions, 1830 flow [2024-11-28 04:03:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:03:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 04:03:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 799 transitions. [2024-11-28 04:03:58,492 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5073015873015873 [2024-11-28 04:03:58,493 INFO L175 Difference]: Start difference. First operand has 182 places, 157 transitions, 1054 flow. Second operand 15 states and 799 transitions. [2024-11-28 04:03:58,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 239 transitions, 1830 flow [2024-11-28 04:03:58,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 239 transitions, 1769 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-28 04:03:58,519 INFO L231 Difference]: Finished difference. Result has 187 places, 161 transitions, 1166 flow [2024-11-28 04:03:58,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1166, PETRI_PLACES=187, PETRI_TRANSITIONS=161} [2024-11-28 04:03:58,520 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 87 predicate places. [2024-11-28 04:03:58,520 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 161 transitions, 1166 flow [2024-11-28 04:03:58,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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 04:03:58,521 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:58,521 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:58,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:58,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:58,725 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:03:58,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1053658426, now seen corresponding path program 1 times [2024-11-28 04:03:58,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:58,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233609758] [2024-11-28 04:03:58,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233609758] [2024-11-28 04:03:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233609758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738701951] [2024-11-28 04:03:59,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:59,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:59,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:59,309 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:59,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:03:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:59,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:03:59,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:59,467 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 04:03:59,527 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 19 treesize of output 1 [2024-11-28 04:03:59,576 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:03:59,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-28 04:03:59,604 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 04:03:59,628 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 04:03:59,672 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:59,672 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 04:03:59,704 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 04:03:59,722 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 04:03:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:59,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:00,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:04:00,171 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 27 treesize of output 28 [2024-11-28 04:04:00,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:04:00,182 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 71 treesize of output 65 [2024-11-28 04:04:00,191 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 28 treesize of output 24 [2024-11-28 04:04:00,198 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 50 treesize of output 42 [2024-11-28 04:04:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:04:00,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738701951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:00,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:00,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-28 04:04:00,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989422653] [2024-11-28 04:04:00,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:00,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:04:00,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:00,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:04:00,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=652, Unknown=4, NotChecked=0, Total=756 [2024-11-28 04:04:00,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-28 04:04:00,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 161 transitions, 1166 flow. Second operand has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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 04:04:00,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:00,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-28 04:04:00,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:04:02,811 INFO L124 PetriNetUnfolderBase]: 5413/9613 cut-off events. [2024-11-28 04:04:02,811 INFO L125 PetriNetUnfolderBase]: For 17867/18717 co-relation queries the response was YES. [2024-11-28 04:04:02,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28986 conditions, 9613 events. 5413/9613 cut-off events. For 17867/18717 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 66587 event pairs, 2690 based on Foata normal form. 171/8730 useless extension candidates. Maximal degree in co-relation 28825. Up to 4890 conditions per place. [2024-11-28 04:04:02,873 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 153 selfloop transitions, 46 changer transitions 0/238 dead transitions. [2024-11-28 04:04:02,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 238 transitions, 1879 flow [2024-11-28 04:04:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:04:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 04:04:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 798 transitions. [2024-11-28 04:04:02,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-28 04:04:02,875 INFO L175 Difference]: Start difference. First operand has 187 places, 161 transitions, 1166 flow. Second operand 15 states and 798 transitions. [2024-11-28 04:04:02,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 238 transitions, 1879 flow [2024-11-28 04:04:02,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 238 transitions, 1827 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 04:04:02,892 INFO L231 Difference]: Finished difference. Result has 197 places, 160 transitions, 1202 flow [2024-11-28 04:04:02,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1202, PETRI_PLACES=197, PETRI_TRANSITIONS=160} [2024-11-28 04:04:02,893 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 97 predicate places. [2024-11-28 04:04:02,893 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 160 transitions, 1202 flow [2024-11-28 04:04:02,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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 04:04:02,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:04:02,894 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:02,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:03,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:03,094 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:04:03,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1100927333, now seen corresponding path program 2 times [2024-11-28 04:04:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143201277] [2024-11-28 04:04:03,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:04:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:03,111 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:04:03,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:04:03,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143201277] [2024-11-28 04:04:03,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143201277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:03,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:03,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:04:03,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303157753] [2024-11-28 04:04:03,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:03,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:04:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:03,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:04:03,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:03,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-28 04:04:03,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 160 transitions, 1202 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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 04:04:03,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:03,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-28 04:04:03,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:04:04,555 INFO L124 PetriNetUnfolderBase]: 5779/9624 cut-off events. [2024-11-28 04:04:04,555 INFO L125 PetriNetUnfolderBase]: For 25846/26567 co-relation queries the response was YES. [2024-11-28 04:04:04,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31407 conditions, 9624 events. 5779/9624 cut-off events. For 25846/26567 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 65003 event pairs, 1304 based on Foata normal form. 415/9024 useless extension candidates. Maximal degree in co-relation 31246. Up to 3400 conditions per place. [2024-11-28 04:04:04,613 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 161 selfloop transitions, 9 changer transitions 0/211 dead transitions. [2024-11-28 04:04:04,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 211 transitions, 1894 flow [2024-11-28 04:04:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:04:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:04:04,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-11-28 04:04:04,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-11-28 04:04:04,615 INFO L175 Difference]: Start difference. First operand has 197 places, 160 transitions, 1202 flow. Second operand 4 states and 296 transitions. [2024-11-28 04:04:04,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 211 transitions, 1894 flow [2024-11-28 04:04:04,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 211 transitions, 1806 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-28 04:04:04,632 INFO L231 Difference]: Finished difference. Result has 187 places, 159 transitions, 1138 flow [2024-11-28 04:04:04,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1138, PETRI_PLACES=187, PETRI_TRANSITIONS=159} [2024-11-28 04:04:04,632 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 87 predicate places. [2024-11-28 04:04:04,632 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 159 transitions, 1138 flow [2024-11-28 04:04:04,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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 04:04:04,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:04:04,633 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:04,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 04:04:04,633 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:04:04,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1046496386, now seen corresponding path program 1 times [2024-11-28 04:04:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:04,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11242447] [2024-11-28 04:04:04,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:04,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:04:04,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:04,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11242447] [2024-11-28 04:04:04,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11242447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:04,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:04,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:04,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542567971] [2024-11-28 04:04:04,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:04,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:04:04,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:04,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:04:04,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:04,711 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-28 04:04:04,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 159 transitions, 1138 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 04:04:04,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:04,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-28 04:04:04,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:04:06,226 INFO L124 PetriNetUnfolderBase]: 5487/9910 cut-off events. [2024-11-28 04:04:06,226 INFO L125 PetriNetUnfolderBase]: For 26166/26741 co-relation queries the response was YES. [2024-11-28 04:04:06,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31727 conditions, 9910 events. 5487/9910 cut-off events. For 26166/26741 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 69669 event pairs, 2860 based on Foata normal form. 367/9565 useless extension candidates. Maximal degree in co-relation 31566. Up to 6014 conditions per place. [2024-11-28 04:04:06,329 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 144 selfloop transitions, 10 changer transitions 0/194 dead transitions. [2024-11-28 04:04:06,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 194 transitions, 1620 flow [2024-11-28 04:04:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:04:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:04:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2024-11-28 04:04:06,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-28 04:04:06,330 INFO L175 Difference]: Start difference. First operand has 187 places, 159 transitions, 1138 flow. Second operand 4 states and 288 transitions. [2024-11-28 04:04:06,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 194 transitions, 1620 flow [2024-11-28 04:04:06,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 194 transitions, 1570 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:04:06,354 INFO L231 Difference]: Finished difference. Result has 189 places, 160 transitions, 1159 flow [2024-11-28 04:04:06,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1159, PETRI_PLACES=189, PETRI_TRANSITIONS=160} [2024-11-28 04:04:06,355 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 89 predicate places. [2024-11-28 04:04:06,355 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 160 transitions, 1159 flow [2024-11-28 04:04:06,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 04:04:06,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:04:06,356 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:06,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 04:04:06,356 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:04:06,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash -230989928, now seen corresponding path program 1 times [2024-11-28 04:04:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602155303] [2024-11-28 04:04:06,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:04:06,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:06,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602155303] [2024-11-28 04:04:06,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602155303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:06,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250487229] [2024-11-28 04:04:06,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:06,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:06,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:06,452 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:06,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:04:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:06,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:04:06,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:04:06,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:04:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250487229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:07,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:07,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 23 [2024-11-28 04:04:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477274659] [2024-11-28 04:04:07,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:07,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:04:07,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:07,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:04:07,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:04:07,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 105 [2024-11-28 04:04:07,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 160 transitions, 1159 flow. Second operand has 23 states, 23 states have (on average 49.17391304347826) internal successors, (1131), 23 states have internal predecessors, (1131), 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 04:04:07,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:07,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 105 [2024-11-28 04:04:07,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:04:09,750 INFO L124 PetriNetUnfolderBase]: 8640/14591 cut-off events. [2024-11-28 04:04:09,751 INFO L125 PetriNetUnfolderBase]: For 43225/44067 co-relation queries the response was YES. [2024-11-28 04:04:09,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48605 conditions, 14591 events. 8640/14591 cut-off events. For 43225/44067 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 103468 event pairs, 3483 based on Foata normal form. 238/13436 useless extension candidates. Maximal degree in co-relation 48408. Up to 3714 conditions per place. [2024-11-28 04:04:09,860 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 284 selfloop transitions, 79 changer transitions 0/406 dead transitions. [2024-11-28 04:04:09,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 406 transitions, 3535 flow [2024-11-28 04:04:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:04:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 04:04:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1260 transitions. [2024-11-28 04:04:09,862 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-28 04:04:09,863 INFO L175 Difference]: Start difference. First operand has 189 places, 160 transitions, 1159 flow. Second operand 21 states and 1260 transitions. [2024-11-28 04:04:09,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 406 transitions, 3535 flow [2024-11-28 04:04:09,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 406 transitions, 3496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:04:09,921 INFO L231 Difference]: Finished difference. Result has 213 places, 190 transitions, 1634 flow [2024-11-28 04:04:09,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1634, PETRI_PLACES=213, PETRI_TRANSITIONS=190} [2024-11-28 04:04:09,922 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 113 predicate places. [2024-11-28 04:04:09,922 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 190 transitions, 1634 flow [2024-11-28 04:04:09,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.17391304347826) internal successors, (1131), 23 states have internal predecessors, (1131), 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 04:04:09,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:04:09,922 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:09,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:04:10,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:04:10,126 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:04:10,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1746878315, now seen corresponding path program 1 times [2024-11-28 04:04:10,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:10,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770777606] [2024-11-28 04:04:10,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:10,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:04:10,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:10,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770777606] [2024-11-28 04:04:10,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770777606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:10,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:10,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:04:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414437025] [2024-11-28 04:04:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:10,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:04:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:10,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:04:10,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:10,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-28 04:04:10,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 190 transitions, 1634 flow. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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 04:04:10,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:10,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-28 04:04:10,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:04:14,046 INFO L124 PetriNetUnfolderBase]: 16133/27327 cut-off events. [2024-11-28 04:04:14,047 INFO L125 PetriNetUnfolderBase]: For 90640/92794 co-relation queries the response was YES. [2024-11-28 04:04:14,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100053 conditions, 27327 events. 16133/27327 cut-off events. For 90640/92794 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 216223 event pairs, 12708 based on Foata normal form. 670/26886 useless extension candidates. Maximal degree in co-relation 99859. Up to 11308 conditions per place. [2024-11-28 04:04:14,323 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 191 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-11-28 04:04:14,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 245 transitions, 2456 flow [2024-11-28 04:04:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:04:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2024-11-28 04:04:14,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2024-11-28 04:04:14,325 INFO L175 Difference]: Start difference. First operand has 213 places, 190 transitions, 1634 flow. Second operand 5 states and 306 transitions. [2024-11-28 04:04:14,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 245 transitions, 2456 flow [2024-11-28 04:04:14,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 245 transitions, 2402 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-28 04:04:14,855 INFO L231 Difference]: Finished difference. Result has 216 places, 192 transitions, 1669 flow [2024-11-28 04:04:14,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1669, PETRI_PLACES=216, PETRI_TRANSITIONS=192} [2024-11-28 04:04:14,856 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 116 predicate places. [2024-11-28 04:04:14,856 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 192 transitions, 1669 flow [2024-11-28 04:04:14,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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 04:04:14,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:04:14,856 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:14,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 04:04:14,857 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:04:14,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash 994891930, now seen corresponding path program 1 times [2024-11-28 04:04:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882879376] [2024-11-28 04:04:14,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:04:14,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:14,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882879376] [2024-11-28 04:04:14,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882879376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:14,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035156914] [2024-11-28 04:04:14,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:14,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:14,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:14,938 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:14,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:04:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:15,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:04:15,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:04:15,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:04:15,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035156914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:15,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:15,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-28 04:04:15,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315637466] [2024-11-28 04:04:15,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:15,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:04:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:15,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:04:15,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:04:15,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-28 04:04:15,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 192 transitions, 1669 flow. Second operand has 10 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 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 04:04:15,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:15,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-28 04:04:15,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:04:25,276 INFO L124 PetriNetUnfolderBase]: 37509/58713 cut-off events. [2024-11-28 04:04:25,276 INFO L125 PetriNetUnfolderBase]: For 135271/141679 co-relation queries the response was YES. [2024-11-28 04:04:25,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194302 conditions, 58713 events. 37509/58713 cut-off events. For 135271/141679 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 456347 event pairs, 7232 based on Foata normal form. 1890/59433 useless extension candidates. Maximal degree in co-relation 194103. Up to 15817 conditions per place. [2024-11-28 04:04:25,956 INFO L140 encePairwiseOnDemand]: 96/105 looper letters, 342 selfloop transitions, 21 changer transitions 0/403 dead transitions. [2024-11-28 04:04:25,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 403 transitions, 3465 flow [2024-11-28 04:04:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:04:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:04:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 690 transitions. [2024-11-28 04:04:25,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-28 04:04:25,958 INFO L175 Difference]: Start difference. First operand has 216 places, 192 transitions, 1669 flow. Second operand 10 states and 690 transitions. [2024-11-28 04:04:25,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 403 transitions, 3465 flow [2024-11-28 04:04:26,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 403 transitions, 3460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:04:26,632 INFO L231 Difference]: Finished difference. Result has 228 places, 200 transitions, 1788 flow [2024-11-28 04:04:26,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1664, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1788, PETRI_PLACES=228, PETRI_TRANSITIONS=200} [2024-11-28 04:04:26,633 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 128 predicate places. [2024-11-28 04:04:26,633 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 200 transitions, 1788 flow [2024-11-28 04:04:26,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 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 04:04:26,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:04:26,633 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:26,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:04:26,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:04:26,834 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:04:26,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash 994891929, now seen corresponding path program 1 times [2024-11-28 04:04:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:26,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360714929] [2024-11-28 04:04:26,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:26,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:04:26,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:26,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360714929] [2024-11-28 04:04:26,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360714929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:26,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132434807] [2024-11-28 04:04:26,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:26,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:26,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:26,934 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:26,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:04:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:27,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:04:27,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:04:27,145 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132434807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:27,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:04:27,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:04:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897472139] [2024-11-28 04:04:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:27,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:04:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:27,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:04:27,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:04:27,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-28 04:04:27,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 200 transitions, 1788 flow. Second operand has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 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 04:04:27,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:27,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-28 04:04:27,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:04:36,290 INFO L124 PetriNetUnfolderBase]: 33063/51833 cut-off events. [2024-11-28 04:04:36,290 INFO L125 PetriNetUnfolderBase]: For 177995/184187 co-relation queries the response was YES. [2024-11-28 04:04:36,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184697 conditions, 51833 events. 33063/51833 cut-off events. For 177995/184187 co-relation queries the response was YES. Maximal size of possible extension queue 1256. Compared 398983 event pairs, 2316 based on Foata normal form. 3498/54809 useless extension candidates. Maximal degree in co-relation 184494. Up to 28848 conditions per place. [2024-11-28 04:04:36,826 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 236 selfloop transitions, 17 changer transitions 0/293 dead transitions. [2024-11-28 04:04:36,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 293 transitions, 2741 flow [2024-11-28 04:04:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:04:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:04:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 414 transitions. [2024-11-28 04:04:36,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-28 04:04:36,828 INFO L175 Difference]: Start difference. First operand has 228 places, 200 transitions, 1788 flow. Second operand 6 states and 414 transitions. [2024-11-28 04:04:36,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 293 transitions, 2741 flow [2024-11-28 04:04:37,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 293 transitions, 2724 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 04:04:37,358 INFO L231 Difference]: Finished difference. Result has 226 places, 195 transitions, 1758 flow [2024-11-28 04:04:37,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1758, PETRI_PLACES=226, PETRI_TRANSITIONS=195} [2024-11-28 04:04:37,359 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 126 predicate places. [2024-11-28 04:04:37,359 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 195 transitions, 1758 flow [2024-11-28 04:04:37,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 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 04:04:37,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:04:37,359 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:37,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:37,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:04:37,559 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:04:37,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:37,560 INFO L85 PathProgramCache]: Analyzing trace with hash 994891925, now seen corresponding path program 1 times [2024-11-28 04:04:37,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:37,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691466274] [2024-11-28 04:04:37,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:37,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:04:37,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:37,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691466274] [2024-11-28 04:04:37,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691466274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:37,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342831750] [2024-11-28 04:04:37,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:37,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:37,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:37,770 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:37,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:04:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:37,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:04:37,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:04:38,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:04:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342831750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:38,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:38,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-28 04:04:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139201586] [2024-11-28 04:04:38,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:38,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:04:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:38,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:04:38,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:04:38,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 105 [2024-11-28 04:04:38,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 195 transitions, 1758 flow. Second operand has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 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 04:04:38,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:38,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 105 [2024-11-28 04:04:38,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:04:46,087 INFO L124 PetriNetUnfolderBase]: 29921/46663 cut-off events. [2024-11-28 04:04:46,087 INFO L125 PetriNetUnfolderBase]: For 149489/154439 co-relation queries the response was YES. [2024-11-28 04:04:46,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167096 conditions, 46663 events. 29921/46663 cut-off events. For 149489/154439 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 345148 event pairs, 21938 based on Foata normal form. 1300/46901 useless extension candidates. Maximal degree in co-relation 166892. Up to 34340 conditions per place. [2024-11-28 04:04:46,474 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 157 selfloop transitions, 88 changer transitions 0/284 dead transitions. [2024-11-28 04:04:46,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 284 transitions, 2750 flow [2024-11-28 04:04:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:04:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 04:04:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1066 transitions. [2024-11-28 04:04:46,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5076190476190476 [2024-11-28 04:04:46,476 INFO L175 Difference]: Start difference. First operand has 226 places, 195 transitions, 1758 flow. Second operand 20 states and 1066 transitions. [2024-11-28 04:04:46,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 284 transitions, 2750 flow [2024-11-28 04:04:46,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 2700 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-28 04:04:46,740 INFO L231 Difference]: Finished difference. Result has 246 places, 204 transitions, 2087 flow [2024-11-28 04:04:46,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2087, PETRI_PLACES=246, PETRI_TRANSITIONS=204} [2024-11-28 04:04:46,741 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 146 predicate places. [2024-11-28 04:04:46,741 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 204 transitions, 2087 flow [2024-11-28 04:04:46,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 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 04:04:46,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:04:46,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:46,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:04:46,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf666265-b3a7-4b08-8cbe-61d16d306540/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:46,942 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-28 04:04:46,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2127638013, now seen corresponding path program 1 times [2024-11-28 04:04:46,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:46,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636501214] [2024-11-28 04:04:46,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:46,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:04:47,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:47,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636501214] [2024-11-28 04:04:47,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636501214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:47,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:47,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:04:47,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616813272] [2024-11-28 04:04:47,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:47,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:04:47,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:47,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:04:47,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:04:47,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-28 04:04:47,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 204 transitions, 2087 flow. Second operand has 7 states, 7 states have (on average 47.714285714285715) internal successors, (334), 7 states have internal predecessors, (334), 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 04:04:47,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:04:47,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-28 04:04:47,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand