./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.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_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:56:35,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:56:35,240 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 12:56:35,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:56:35,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:56:35,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:56:35,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:56:35,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:56:35,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:56:35,269 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:56:35,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:56:35,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:56:35,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:56:35,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:56:35,270 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:56:35,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:56:35,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:56:35,270 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:56:35,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:56:35,272 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:56:35,272 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:56:35,272 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:56:35,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:56:35,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:56:35,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:56:35,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:56:35,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:56:35,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:56:35,273 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:56:35,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:56:35,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:56:35,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:56:35,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:56:35,273 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:56:35,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:56:35,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:56:35,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:56:35,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:56:35,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:56:35,274 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:56:35,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:56:35,274 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_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-12-02 12:56:35,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:56:35,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:56:35,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:56:35,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:56:35,486 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:56:35,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-12-02 12:56:38,073 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/data/86efdaf6b/7aa0870aeb0547efbe764c6908dcf5d7/FLAG842f1be92 [2024-12-02 12:56:38,287 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:56:38,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-12-02 12:56:38,302 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/data/86efdaf6b/7aa0870aeb0547efbe764c6908dcf5d7/FLAG842f1be92 [2024-12-02 12:56:38,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/data/86efdaf6b/7aa0870aeb0547efbe764c6908dcf5d7 [2024-12-02 12:56:38,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:56:38,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:56:38,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:56:38,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:56:38,659 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:56:38,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f5e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38, skipping insertion in model container [2024-12-02 12:56:38,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:56:38,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:56:38,813 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:56:38,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:56:38,846 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:56:38,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38 WrapperNode [2024-12-02 12:56:38,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:56:38,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:56:38,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:56:38,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:56:38,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,877 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 230 [2024-12-02 12:56:38,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:56:38,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:56:38,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:56:38,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:56:38,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,900 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-12-02 12:56:38,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,906 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:56:38,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:56:38,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:56:38,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:56:38,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (1/1) ... [2024-12-02 12:56:38,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:56:38,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:38,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:56:38,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:56:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:56:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 12:56:38,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 12:56:38,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 12:56:38,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:56:38,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:56:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:56:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:56:38,970 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 12:56:39,060 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:56:39,061 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:56:39,413 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:56:39,413 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:56:39,755 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:56:39,756 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 12:56:39,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:56:39 BoogieIcfgContainer [2024-12-02 12:56:39,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:56:39,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:56:39,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:56:39,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:56:39,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:56:38" (1/3) ... [2024-12-02 12:56:39,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aafff15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:56:39, skipping insertion in model container [2024-12-02 12:56:39,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:38" (2/3) ... [2024-12-02 12:56:39,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aafff15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:56:39, skipping insertion in model container [2024-12-02 12:56:39,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:56:39" (3/3) ... [2024-12-02 12:56:39,764 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-12-02 12:56:39,779 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:56:39,781 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum-alt2.wvr.c that has 4 procedures, 62 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2024-12-02 12:56:39,781 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:56:39,904 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 12:56:39,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 65 transitions, 151 flow [2024-12-02 12:56:39,994 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2024-12-02 12:56:39,996 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-12-02 12:56:40,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 4/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 230 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-12-02 12:56:40,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 65 transitions, 151 flow [2024-12-02 12:56:40,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 135 flow [2024-12-02 12:56:40,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:56:40,022 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;@66b360e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:56:40,022 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-12-02 12:56:40,025 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:56:40,025 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 12:56:40,025 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:56:40,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:40,026 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 12:56:40,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:40,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash 786047, now seen corresponding path program 1 times [2024-12-02 12:56:40,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:40,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353822747] [2024-12-02 12:56:40,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353822747] [2024-12-02 12:56:40,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353822747] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:40,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:56:40,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332740204] [2024-12-02 12:56:40,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:40,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:56:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:40,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:56:40,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:56:40,299 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-12-02 12:56:40,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:40,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:40,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-12-02 12:56:40,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:41,193 INFO L124 PetriNetUnfolderBase]: 2971/4590 cut-off events. [2024-12-02 12:56:41,193 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-12-02 12:56:41,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 4590 events. 2971/4590 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 29910 event pairs, 2534 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 8514. Up to 4217 conditions per place. [2024-12-02 12:56:41,225 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 37 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-12-02 12:56:41,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 211 flow [2024-12-02 12:56:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:56:41,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:56:41,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-12-02 12:56:41,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-12-02 12:56:41,238 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 135 flow. Second operand 4 states and 125 transitions. [2024-12-02 12:56:41,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 211 flow [2024-12-02 12:56:41,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 202 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-12-02 12:56:41,249 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 143 flow [2024-12-02 12:56:41,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-12-02 12:56:41,254 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-12-02 12:56:41,254 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 143 flow [2024-12-02 12:56:41,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:41,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:41,255 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 12:56:41,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:56:41,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:41,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1943056524, now seen corresponding path program 1 times [2024-12-02 12:56:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801126414] [2024-12-02 12:56:41,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:41,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:41,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801126414] [2024-12-02 12:56:41,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801126414] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:41,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250559601] [2024-12-02 12:56:41,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:41,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:41,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:41,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:41,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:56:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:41,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:56:41,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:56:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:41,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:56:41,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250559601] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:41,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:56:41,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:56:41,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800350758] [2024-12-02 12:56:41,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:41,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:56:41,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:41,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:56:41,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:56:41,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-12-02 12:56:41,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:41,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:41,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-12-02 12:56:41,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:42,187 INFO L124 PetriNetUnfolderBase]: 2971/4589 cut-off events. [2024-12-02 12:56:42,188 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-12-02 12:56:42,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8959 conditions, 4589 events. 2971/4589 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 29892 event pairs, 2534 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 8932. Up to 4212 conditions per place. [2024-12-02 12:56:42,218 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-12-02 12:56:42,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 219 flow [2024-12-02 12:56:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:56:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:56:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-12-02 12:56:42,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-12-02 12:56:42,221 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 143 flow. Second operand 6 states and 155 transitions. [2024-12-02 12:56:42,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 219 flow [2024-12-02 12:56:42,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:56:42,222 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 150 flow [2024-12-02 12:56:42,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-12-02 12:56:42,223 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2024-12-02 12:56:42,223 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 150 flow [2024-12-02 12:56:42,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:42,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:42,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:56:42,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:56:42,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:42,424 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:42,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:42,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1946533933, now seen corresponding path program 1 times [2024-12-02 12:56:42,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997818499] [2024-12-02 12:56:42,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997818499] [2024-12-02 12:56:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997818499] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:42,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:42,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:56:42,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900642486] [2024-12-02 12:56:42,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:42,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:56:42,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:42,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:56:42,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:56:42,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-12-02 12:56:42,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:42,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:42,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-12-02 12:56:42,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:43,735 INFO L124 PetriNetUnfolderBase]: 4377/6876 cut-off events. [2024-12-02 12:56:43,735 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-12-02 12:56:43,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13382 conditions, 6876 events. 4377/6876 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 46798 event pairs, 3263 based on Foata normal form. 0/4093 useless extension candidates. Maximal degree in co-relation 10025. Up to 4714 conditions per place. [2024-12-02 12:56:43,782 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 82 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-12-02 12:56:43,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 427 flow [2024-12-02 12:56:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:56:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:56:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-12-02 12:56:43,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5784615384615385 [2024-12-02 12:56:43,784 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 150 flow. Second operand 5 states and 188 transitions. [2024-12-02 12:56:43,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 427 flow [2024-12-02 12:56:43,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 405 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-12-02 12:56:43,786 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 153 flow [2024-12-02 12:56:43,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-12-02 12:56:43,787 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-12-02 12:56:43,787 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 153 flow [2024-12-02 12:56:43,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:43,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:43,788 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 12:56:43,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:56:43,788 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:43,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash 105210872, now seen corresponding path program 1 times [2024-12-02 12:56:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424039502] [2024-12-02 12:56:43,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:43,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:43,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424039502] [2024-12-02 12:56:43,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424039502] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:43,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169201746] [2024-12-02 12:56:43,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:43,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:43,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:43,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:43,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:56:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:43,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:56:43,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:56:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:43,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:56:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:44,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169201746] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:56:44,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:56:44,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-12-02 12:56:44,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986225619] [2024-12-02 12:56:44,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:56:44,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:56:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:44,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:56:44,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:56:44,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-12-02 12:56:44,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:44,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:44,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-12-02 12:56:44,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:44,820 INFO L124 PetriNetUnfolderBase]: 4026/6344 cut-off events. [2024-12-02 12:56:44,820 INFO L125 PetriNetUnfolderBase]: For 1168/1272 co-relation queries the response was YES. [2024-12-02 12:56:44,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13244 conditions, 6344 events. 4026/6344 cut-off events. For 1168/1272 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 43649 event pairs, 3468 based on Foata normal form. 3/3762 useless extension candidates. Maximal degree in co-relation 9327. Up to 5782 conditions per place. [2024-12-02 12:56:44,853 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 38 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-12-02 12:56:44,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 285 flow [2024-12-02 12:56:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:56:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:56:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-12-02 12:56:44,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3723076923076923 [2024-12-02 12:56:44,856 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 153 flow. Second operand 10 states and 242 transitions. [2024-12-02 12:56:44,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 285 flow [2024-12-02 12:56:44,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:56:44,858 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 222 flow [2024-12-02 12:56:44,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-12-02 12:56:44,859 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-12-02 12:56:44,859 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 222 flow [2024-12-02 12:56:44,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:44,859 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:44,859 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:44,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:56:45,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:45,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:45,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2011979764, now seen corresponding path program 1 times [2024-12-02 12:56:45,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:45,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259487078] [2024-12-02 12:56:45,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:45,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:45,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:45,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259487078] [2024-12-02 12:56:45,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259487078] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:45,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:45,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:56:45,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924100085] [2024-12-02 12:56:45,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:45,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:56:45,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:45,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:56:45,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:56:45,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-12-02 12:56:45,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:45,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:45,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-12-02 12:56:45,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:45,739 INFO L124 PetriNetUnfolderBase]: 3682/5804 cut-off events. [2024-12-02 12:56:45,739 INFO L125 PetriNetUnfolderBase]: For 705/866 co-relation queries the response was YES. [2024-12-02 12:56:45,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11862 conditions, 5804 events. 3682/5804 cut-off events. For 705/866 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 38106 event pairs, 3023 based on Foata normal form. 0/3444 useless extension candidates. Maximal degree in co-relation 11826. Up to 4743 conditions per place. [2024-12-02 12:56:45,768 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 76 selfloop transitions, 5 changer transitions 2/99 dead transitions. [2024-12-02 12:56:45,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 469 flow [2024-12-02 12:56:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:56:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:56:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-12-02 12:56:45,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-12-02 12:56:45,770 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 222 flow. Second operand 5 states and 175 transitions. [2024-12-02 12:56:45,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 469 flow [2024-12-02 12:56:45,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 458 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-12-02 12:56:45,773 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 236 flow [2024-12-02 12:56:45,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-12-02 12:56:45,773 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-12-02 12:56:45,773 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 236 flow [2024-12-02 12:56:45,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:45,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:45,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:45,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:56:45,774 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:45,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1968064770, now seen corresponding path program 1 times [2024-12-02 12:56:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:45,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939665914] [2024-12-02 12:56:45,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:46,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:46,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939665914] [2024-12-02 12:56:46,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939665914] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:46,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824365533] [2024-12-02 12:56:46,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:46,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:46,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:46,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:46,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:56:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:46,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 12:56:46,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:56:46,173 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 [2024-12-02 12:56:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:46,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:56:46,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-12-02 12:56:46,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:56:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824365533] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:56:46,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:56:46,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-12-02 12:56:46,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226913200] [2024-12-02 12:56:46,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:56:46,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:56:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:46,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:56:46,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:56:46,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:56:46,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:46,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:46,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:56:46,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:47,380 INFO L124 PetriNetUnfolderBase]: 5230/8979 cut-off events. [2024-12-02 12:56:47,380 INFO L125 PetriNetUnfolderBase]: For 1475/1846 co-relation queries the response was YES. [2024-12-02 12:56:47,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18229 conditions, 8979 events. 5230/8979 cut-off events. For 1475/1846 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 70451 event pairs, 1573 based on Foata normal form. 0/5574 useless extension candidates. Maximal degree in co-relation 18191. Up to 2500 conditions per place. [2024-12-02 12:56:47,416 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 99 selfloop transitions, 16 changer transitions 1/133 dead transitions. [2024-12-02 12:56:47,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 618 flow [2024-12-02 12:56:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:56:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:56:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-12-02 12:56:47,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5307692307692308 [2024-12-02 12:56:47,418 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 236 flow. Second operand 8 states and 276 transitions. [2024-12-02 12:56:47,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 618 flow [2024-12-02 12:56:47,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:56:47,423 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 304 flow [2024-12-02 12:56:47,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2024-12-02 12:56:47,424 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2024-12-02 12:56:47,424 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 304 flow [2024-12-02 12:56:47,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:47,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:47,424 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:47,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:56:47,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 12:56:47,625 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:47,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:47,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1968064768, now seen corresponding path program 1 times [2024-12-02 12:56:47,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:47,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063900721] [2024-12-02 12:56:47,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:47,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:56:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063900721] [2024-12-02 12:56:47,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063900721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:47,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 12:56:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496580141] [2024-12-02 12:56:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:47,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:56:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:47,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:56:47,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:56:47,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:56:47,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:47,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:47,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:56:47,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:48,382 INFO L124 PetriNetUnfolderBase]: 4866/8719 cut-off events. [2024-12-02 12:56:48,382 INFO L125 PetriNetUnfolderBase]: For 4329/4628 co-relation queries the response was YES. [2024-12-02 12:56:48,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20343 conditions, 8719 events. 4866/8719 cut-off events. For 4329/4628 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 69074 event pairs, 1573 based on Foata normal form. 0/5853 useless extension candidates. Maximal degree in co-relation 20302. Up to 4355 conditions per place. [2024-12-02 12:56:48,412 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 77 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-12-02 12:56:48,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 509 flow [2024-12-02 12:56:48,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:56:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:56:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-12-02 12:56:48,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2024-12-02 12:56:48,413 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 304 flow. Second operand 3 states and 127 transitions. [2024-12-02 12:56:48,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 509 flow [2024-12-02 12:56:48,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 492 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-12-02 12:56:48,419 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 283 flow [2024-12-02 12:56:48,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-12-02 12:56:48,419 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-12-02 12:56:48,419 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 283 flow [2024-12-02 12:56:48,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:48,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:48,420 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:48,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:56:48,420 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:48,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1968064771, now seen corresponding path program 1 times [2024-12-02 12:56:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:48,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366630015] [2024-12-02 12:56:48,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:48,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:48,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366630015] [2024-12-02 12:56:48,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366630015] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:48,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870217857] [2024-12-02 12:56:48,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:48,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:48,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:48,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:48,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:56:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:48,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 12:56:48,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:56:48,697 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 [2024-12-02 12:56:48,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:48,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:56:48,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-02 12:56:48,798 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 [2024-12-02 12:56:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870217857] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:56:48,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:56:48,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 12:56:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27628369] [2024-12-02 12:56:48,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:56:48,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:56:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:48,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:56:48,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:56:48,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:56:48,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 283 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:48,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:48,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:56:48,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:49,659 INFO L124 PetriNetUnfolderBase]: 4512/8041 cut-off events. [2024-12-02 12:56:49,659 INFO L125 PetriNetUnfolderBase]: For 3639/3982 co-relation queries the response was YES. [2024-12-02 12:56:49,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18839 conditions, 8041 events. 4512/8041 cut-off events. For 3639/3982 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 63974 event pairs, 2012 based on Foata normal form. 146/5567 useless extension candidates. Maximal degree in co-relation 18799. Up to 2921 conditions per place. [2024-12-02 12:56:49,687 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 96 selfloop transitions, 16 changer transitions 1/130 dead transitions. [2024-12-02 12:56:49,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 641 flow [2024-12-02 12:56:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:56:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:56:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2024-12-02 12:56:49,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-12-02 12:56:49,689 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 283 flow. Second operand 8 states and 273 transitions. [2024-12-02 12:56:49,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 641 flow [2024-12-02 12:56:49,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:56:49,693 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 309 flow [2024-12-02 12:56:49,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=309, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-12-02 12:56:49,693 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-12-02 12:56:49,693 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 309 flow [2024-12-02 12:56:49,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:49,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:49,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:49,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:56:49,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 12:56:49,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:49,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -790996471, now seen corresponding path program 1 times [2024-12-02 12:56:49,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:49,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211358687] [2024-12-02 12:56:49,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:49,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:49,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:49,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211358687] [2024-12-02 12:56:49,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211358687] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:49,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:49,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:56:49,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198384516] [2024-12-02 12:56:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:49,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:56:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:49,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:56:49,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:56:49,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-12-02 12:56:49,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:49,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:49,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-12-02 12:56:49,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:50,714 INFO L124 PetriNetUnfolderBase]: 4769/7581 cut-off events. [2024-12-02 12:56:50,714 INFO L125 PetriNetUnfolderBase]: For 7546/8072 co-relation queries the response was YES. [2024-12-02 12:56:50,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19884 conditions, 7581 events. 4769/7581 cut-off events. For 7546/8072 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 51550 event pairs, 4132 based on Foata normal form. 0/5065 useless extension candidates. Maximal degree in co-relation 19843. Up to 6599 conditions per place. [2024-12-02 12:56:50,747 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 49 selfloop transitions, 2 changer transitions 22/89 dead transitions. [2024-12-02 12:56:50,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 511 flow [2024-12-02 12:56:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:56:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:56:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-12-02 12:56:50,748 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49846153846153846 [2024-12-02 12:56:50,749 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 309 flow. Second operand 5 states and 162 transitions. [2024-12-02 12:56:50,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 511 flow [2024-12-02 12:56:50,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-12-02 12:56:50,752 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 276 flow [2024-12-02 12:56:50,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-12-02 12:56:50,753 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-12-02 12:56:50,753 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 276 flow [2024-12-02 12:56:50,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:50,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:50,754 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:50,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:56:50,754 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:50,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1549980129, now seen corresponding path program 1 times [2024-12-02 12:56:50,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136568354] [2024-12-02 12:56:50,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:50,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136568354] [2024-12-02 12:56:50,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136568354] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:50,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453060181] [2024-12-02 12:56:50,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:50,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:50,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:50,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:50,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:56:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:51,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 12:56:51,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:56:51,042 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 [2024-12-02 12:56:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:51,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:56:51,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-02 12:56:51,174 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 [2024-12-02 12:56:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453060181] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:56:51,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:56:51,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 12:56:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133215702] [2024-12-02 12:56:51,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:56:51,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:56:51,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:51,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:56:51,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:56:51,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:56:51,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 276 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:51,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:51,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:56:51,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:52,499 INFO L124 PetriNetUnfolderBase]: 6965/11778 cut-off events. [2024-12-02 12:56:52,500 INFO L125 PetriNetUnfolderBase]: For 9425/10369 co-relation queries the response was YES. [2024-12-02 12:56:52,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29775 conditions, 11778 events. 6965/11778 cut-off events. For 9425/10369 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 90226 event pairs, 1827 based on Foata normal form. 0/7908 useless extension candidates. Maximal degree in co-relation 29747. Up to 3650 conditions per place. [2024-12-02 12:56:52,537 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 87 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2024-12-02 12:56:52,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 702 flow [2024-12-02 12:56:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:56:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:56:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-12-02 12:56:52,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48653846153846153 [2024-12-02 12:56:52,538 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 276 flow. Second operand 8 states and 253 transitions. [2024-12-02 12:56:52,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 702 flow [2024-12-02 12:56:52,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 662 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-12-02 12:56:52,550 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 323 flow [2024-12-02 12:56:52,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=323, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-12-02 12:56:52,551 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2024-12-02 12:56:52,551 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 323 flow [2024-12-02 12:56:52,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:52,551 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:52,551 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:52,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:56:52,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 12:56:52,752 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:52,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1549980128, now seen corresponding path program 1 times [2024-12-02 12:56:52,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:52,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198909950] [2024-12-02 12:56:52,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:52,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:52,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198909950] [2024-12-02 12:56:52,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198909950] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:52,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268469468] [2024-12-02 12:56:52,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:52,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:52,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:52,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:56:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:53,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 12:56:53,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:56:53,020 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 [2024-12-02 12:56:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:53,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:56:53,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-12-02 12:56:53,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:56:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268469468] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:56:53,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:56:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 12:56:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911972168] [2024-12-02 12:56:53,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:56:53,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:56:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:53,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:56:53,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:56:53,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:56:53,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 323 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:53,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:53,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:56:53,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:54,098 INFO L124 PetriNetUnfolderBase]: 6449/10952 cut-off events. [2024-12-02 12:56:54,098 INFO L125 PetriNetUnfolderBase]: For 9531/9531 co-relation queries the response was YES. [2024-12-02 12:56:54,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30079 conditions, 10952 events. 6449/10952 cut-off events. For 9531/9531 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 83132 event pairs, 1707 based on Foata normal form. 0/7656 useless extension candidates. Maximal degree in co-relation 30044. Up to 3215 conditions per place. [2024-12-02 12:56:54,140 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 86 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2024-12-02 12:56:54,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 713 flow [2024-12-02 12:56:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:56:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:56:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-12-02 12:56:54,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-12-02 12:56:54,141 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 323 flow. Second operand 8 states and 252 transitions. [2024-12-02 12:56:54,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 713 flow [2024-12-02 12:56:54,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 118 transitions, 703 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 12:56:54,147 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 339 flow [2024-12-02 12:56:54,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-12-02 12:56:54,147 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-12-02 12:56:54,147 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 339 flow [2024-12-02 12:56:54,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:54,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:54,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:54,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:56:54,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:54,348 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:54,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1549980126, now seen corresponding path program 1 times [2024-12-02 12:56:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:54,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701265909] [2024-12-02 12:56:54,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:54,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:56:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:54,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701265909] [2024-12-02 12:56:54,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701265909] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:54,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:54,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 12:56:54,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379523992] [2024-12-02 12:56:54,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:54,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:56:54,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:54,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:56:54,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:56:54,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:56:54,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:54,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:54,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:56:54,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:55,657 INFO L124 PetriNetUnfolderBase]: 7018/12257 cut-off events. [2024-12-02 12:56:55,657 INFO L125 PetriNetUnfolderBase]: For 15135/15135 co-relation queries the response was YES. [2024-12-02 12:56:55,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34979 conditions, 12257 events. 7018/12257 cut-off events. For 15135/15135 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 97920 event pairs, 1568 based on Foata normal form. 0/8937 useless extension candidates. Maximal degree in co-relation 34944. Up to 8581 conditions per place. [2024-12-02 12:56:55,699 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 76 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-12-02 12:56:55,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 96 transitions, 610 flow [2024-12-02 12:56:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:56:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:56:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-12-02 12:56:55,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6358974358974359 [2024-12-02 12:56:55,700 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 339 flow. Second operand 3 states and 124 transitions. [2024-12-02 12:56:55,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 96 transitions, 610 flow [2024-12-02 12:56:55,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 595 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-12-02 12:56:55,709 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 353 flow [2024-12-02 12:56:55,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2024-12-02 12:56:55,710 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2024-12-02 12:56:55,710 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 353 flow [2024-12-02 12:56:55,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:55,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:55,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:55,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:56:55,710 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:55,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:55,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1524604157, now seen corresponding path program 1 times [2024-12-02 12:56:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:55,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592194467] [2024-12-02 12:56:55,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:55,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:56:55,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:55,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592194467] [2024-12-02 12:56:55,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592194467] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:55,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:55,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:56:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577966429] [2024-12-02 12:56:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:55,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:56:55,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:55,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:56:55,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:56:55,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:56:55,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:55,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:55,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:56:55,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:56:56,968 INFO L124 PetriNetUnfolderBase]: 9398/14517 cut-off events. [2024-12-02 12:56:56,968 INFO L125 PetriNetUnfolderBase]: For 16401/16401 co-relation queries the response was YES. [2024-12-02 12:56:56,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44862 conditions, 14517 events. 9398/14517 cut-off events. For 16401/16401 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 105249 event pairs, 6433 based on Foata normal form. 476/11684 useless extension candidates. Maximal degree in co-relation 44828. Up to 10721 conditions per place. [2024-12-02 12:56:57,034 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 113 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-12-02 12:56:57,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 847 flow [2024-12-02 12:56:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:56:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:56:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-12-02 12:56:57,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2024-12-02 12:56:57,035 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 353 flow. Second operand 4 states and 159 transitions. [2024-12-02 12:56:57,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 847 flow [2024-12-02 12:56:57,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:56:57,054 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 371 flow [2024-12-02 12:56:57,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-12-02 12:56:57,055 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-12-02 12:56:57,055 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 371 flow [2024-12-02 12:56:57,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:57,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:56:57,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:56:57,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:56:57,055 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:56:57,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash 809021275, now seen corresponding path program 1 times [2024-12-02 12:56:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:57,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80505925] [2024-12-02 12:56:57,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:57,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:57,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80505925] [2024-12-02 12:56:57,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80505925] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:57,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473859610] [2024-12-02 12:56:57,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:57,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:57,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:57,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:57,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:56:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:57,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 12:56:57,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:56:57,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-12-02 12:56:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:57,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:56:58,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-12-02 12:56:58,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-12-02 12:56:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:56:58,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473859610] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:56:58,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:56:58,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-12-02 12:56:58,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122807957] [2024-12-02 12:56:58,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:56:58,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:56:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:58,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:56:58,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:56:58,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:56:58,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 371 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:56:58,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:56:58,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:56:58,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:03,476 INFO L124 PetriNetUnfolderBase]: 28447/44344 cut-off events. [2024-12-02 12:57:03,476 INFO L125 PetriNetUnfolderBase]: For 68818/68818 co-relation queries the response was YES. [2024-12-02 12:57:03,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143623 conditions, 44344 events. 28447/44344 cut-off events. For 68818/68818 co-relation queries the response was YES. Maximal size of possible extension queue 2259. Compared 368877 event pairs, 10806 based on Foata normal form. 0/33106 useless extension candidates. Maximal degree in co-relation 143586. Up to 6925 conditions per place. [2024-12-02 12:57:03,714 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 284 selfloop transitions, 35 changer transitions 0/335 dead transitions. [2024-12-02 12:57:03,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 335 transitions, 2481 flow [2024-12-02 12:57:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:57:03,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 12:57:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 510 transitions. [2024-12-02 12:57:03,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-12-02 12:57:03,717 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 371 flow. Second operand 15 states and 510 transitions. [2024-12-02 12:57:03,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 335 transitions, 2481 flow [2024-12-02 12:57:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 335 transitions, 2427 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:57:03,743 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 571 flow [2024-12-02 12:57:03,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=571, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2024-12-02 12:57:03,743 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 41 predicate places. [2024-12-02 12:57:03,743 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 571 flow [2024-12-02 12:57:03,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:03,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:03,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:03,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:57:03,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 12:57:03,944 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:03,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash 809021276, now seen corresponding path program 1 times [2024-12-02 12:57:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:03,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046934300] [2024-12-02 12:57:03,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:04,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:04,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046934300] [2024-12-02 12:57:04,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046934300] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:57:04,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917704245] [2024-12-02 12:57:04,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:04,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:04,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:57:04,223 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:57:04,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:57:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:04,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 12:57:04,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:57:04,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-12-02 12:57:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:04,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:57:04,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:57:04,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-12-02 12:57:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:04,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917704245] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:57:04,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:57:04,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-12-02 12:57:04,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224327551] [2024-12-02 12:57:04,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:57:04,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:57:04,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:04,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:57:04,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:57:05,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:57:05,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 571 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:05,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:05,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:57:05,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:10,364 INFO L124 PetriNetUnfolderBase]: 27421/42976 cut-off events. [2024-12-02 12:57:10,365 INFO L125 PetriNetUnfolderBase]: For 64851/64851 co-relation queries the response was YES. [2024-12-02 12:57:10,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153174 conditions, 42976 events. 27421/42976 cut-off events. For 64851/64851 co-relation queries the response was YES. Maximal size of possible extension queue 2188. Compared 357962 event pairs, 10806 based on Foata normal form. 536/33858 useless extension candidates. Maximal degree in co-relation 153128. Up to 6733 conditions per place. [2024-12-02 12:57:10,676 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 282 selfloop transitions, 35 changer transitions 0/333 dead transitions. [2024-12-02 12:57:10,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 333 transitions, 2569 flow [2024-12-02 12:57:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:57:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 12:57:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 508 transitions. [2024-12-02 12:57:10,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521025641025641 [2024-12-02 12:57:10,678 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 571 flow. Second operand 15 states and 508 transitions. [2024-12-02 12:57:10,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 333 transitions, 2569 flow [2024-12-02 12:57:11,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 333 transitions, 2560 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 12:57:11,064 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 636 flow [2024-12-02 12:57:11,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=636, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-12-02 12:57:11,064 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2024-12-02 12:57:11,064 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 636 flow [2024-12-02 12:57:11,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:11,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:11,065 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:11,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:57:11,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 12:57:11,265 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:11,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash 822778757, now seen corresponding path program 1 times [2024-12-02 12:57:11,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:11,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325476203] [2024-12-02 12:57:11,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:11,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:57:11,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:11,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325476203] [2024-12-02 12:57:11,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325476203] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:11,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:57:11,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805749317] [2024-12-02 12:57:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:11,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:57:11,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:11,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:57:11,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:57:11,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:57:11,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:11,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:11,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:57:11,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:16,296 INFO L124 PetriNetUnfolderBase]: 31490/48671 cut-off events. [2024-12-02 12:57:16,296 INFO L125 PetriNetUnfolderBase]: For 90939/92321 co-relation queries the response was YES. [2024-12-02 12:57:16,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177928 conditions, 48671 events. 31490/48671 cut-off events. For 90939/92321 co-relation queries the response was YES. Maximal size of possible extension queue 2358. Compared 399872 event pairs, 16725 based on Foata normal form. 1868/41431 useless extension candidates. Maximal degree in co-relation 177881. Up to 31809 conditions per place. [2024-12-02 12:57:16,664 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 175 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2024-12-02 12:57:16,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 196 transitions, 1611 flow [2024-12-02 12:57:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:57:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:57:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-12-02 12:57:16,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2024-12-02 12:57:16,666 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 636 flow. Second operand 4 states and 159 transitions. [2024-12-02 12:57:16,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 196 transitions, 1611 flow [2024-12-02 12:57:17,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 196 transitions, 1543 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-12-02 12:57:17,191 INFO L231 Difference]: Finished difference. Result has 113 places, 102 transitions, 621 flow [2024-12-02 12:57:17,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=113, PETRI_TRANSITIONS=102} [2024-12-02 12:57:17,191 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 47 predicate places. [2024-12-02 12:57:17,191 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 102 transitions, 621 flow [2024-12-02 12:57:17,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:17,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:17,191 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:17,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:57:17,191 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:17,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash -202454261, now seen corresponding path program 1 times [2024-12-02 12:57:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:17,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412522655] [2024-12-02 12:57:17,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:17,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:17,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412522655] [2024-12-02 12:57:17,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412522655] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:57:17,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485395021] [2024-12-02 12:57:17,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:17,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:17,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:57:17,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:57:17,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:57:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:17,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:57:17,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:57:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:17,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:57:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:17,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485395021] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:57:17,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:57:17,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-12-02 12:57:17,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142251362] [2024-12-02 12:57:17,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:57:17,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:57:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:17,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:57:17,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:57:17,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-12-02 12:57:17,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 102 transitions, 621 flow. Second operand has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:17,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:17,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-12-02 12:57:17,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:23,252 INFO L124 PetriNetUnfolderBase]: 28635/42630 cut-off events. [2024-12-02 12:57:23,252 INFO L125 PetriNetUnfolderBase]: For 93412/95422 co-relation queries the response was YES. [2024-12-02 12:57:23,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162760 conditions, 42630 events. 28635/42630 cut-off events. For 93412/95422 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 324784 event pairs, 20432 based on Foata normal form. 670/34198 useless extension candidates. Maximal degree in co-relation 162713. Up to 30864 conditions per place. [2024-12-02 12:57:23,519 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 201 selfloop transitions, 16 changer transitions 0/232 dead transitions. [2024-12-02 12:57:23,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 232 transitions, 1812 flow [2024-12-02 12:57:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:57:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:57:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2024-12-02 12:57:23,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44769230769230767 [2024-12-02 12:57:23,520 INFO L175 Difference]: Start difference. First operand has 113 places, 102 transitions, 621 flow. Second operand 10 states and 291 transitions. [2024-12-02 12:57:23,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 232 transitions, 1812 flow [2024-12-02 12:57:23,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 232 transitions, 1782 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:57:23,656 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 704 flow [2024-12-02 12:57:23,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=704, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-12-02 12:57:23,657 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2024-12-02 12:57:23,657 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 704 flow [2024-12-02 12:57:23,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:23,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:23,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:23,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:57:23,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:23,858 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:23,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:23,858 INFO L85 PathProgramCache]: Analyzing trace with hash 80396193, now seen corresponding path program 1 times [2024-12-02 12:57:23,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:23,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013813269] [2024-12-02 12:57:23,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:23,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:57:23,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:23,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013813269] [2024-12-02 12:57:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013813269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:23,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:23,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:57:23,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146473635] [2024-12-02 12:57:23,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:23,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:57:23,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:23,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:57:23,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:57:23,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:57:23,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 704 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:23,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:23,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:57:23,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:27,719 INFO L124 PetriNetUnfolderBase]: 24157/36295 cut-off events. [2024-12-02 12:57:27,719 INFO L125 PetriNetUnfolderBase]: For 91817/93116 co-relation queries the response was YES. [2024-12-02 12:57:27,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142772 conditions, 36295 events. 24157/36295 cut-off events. For 91817/93116 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 281223 event pairs, 4627 based on Foata normal form. 1311/31391 useless extension candidates. Maximal degree in co-relation 142718. Up to 20298 conditions per place. [2024-12-02 12:57:27,974 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 135 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-12-02 12:57:27,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 169 transitions, 1442 flow [2024-12-02 12:57:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:57:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:57:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-12-02 12:57:27,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5138461538461538 [2024-12-02 12:57:27,975 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 704 flow. Second operand 5 states and 167 transitions. [2024-12-02 12:57:27,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 169 transitions, 1442 flow [2024-12-02 12:57:28,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 169 transitions, 1406 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-12-02 12:57:28,124 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 700 flow [2024-12-02 12:57:28,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=700, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-12-02 12:57:28,124 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 55 predicate places. [2024-12-02 12:57:28,124 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 700 flow [2024-12-02 12:57:28,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:28,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:28,124 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-12-02 12:57:28,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:57:28,125 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:28,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1193403045, now seen corresponding path program 2 times [2024-12-02 12:57:28,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:28,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136092334] [2024-12-02 12:57:28,125 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:57:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:28,135 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:57:28,135 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:57:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:57:28,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:28,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136092334] [2024-12-02 12:57:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136092334] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:57:28,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707849744] [2024-12-02 12:57:28,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:57:28,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:28,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:57:28,185 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:57:28,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:57:28,277 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:57:28,277 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:57:28,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:57:28,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:57:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:57:28,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:57:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:57:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707849744] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:57:28,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:57:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 12:57:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949857766] [2024-12-02 12:57:28,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:57:28,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:57:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:28,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:57:28,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:57:28,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-12-02 12:57:28,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 700 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:28,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:28,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-12-02 12:57:28,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:32,604 INFO L124 PetriNetUnfolderBase]: 19621/30304 cut-off events. [2024-12-02 12:57:32,604 INFO L125 PetriNetUnfolderBase]: For 83377/84732 co-relation queries the response was YES. [2024-12-02 12:57:32,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123041 conditions, 30304 events. 19621/30304 cut-off events. For 83377/84732 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 239810 event pairs, 16097 based on Foata normal form. 412/24612 useless extension candidates. Maximal degree in co-relation 122996. Up to 27478 conditions per place. [2024-12-02 12:57:32,766 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 70 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-12-02 12:57:32,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 105 transitions, 860 flow [2024-12-02 12:57:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:57:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:57:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-12-02 12:57:32,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-12-02 12:57:32,767 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 700 flow. Second operand 4 states and 113 transitions. [2024-12-02 12:57:32,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 105 transitions, 860 flow [2024-12-02 12:57:32,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 105 transitions, 820 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-12-02 12:57:32,895 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 680 flow [2024-12-02 12:57:32,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=680, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2024-12-02 12:57:32,895 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 49 predicate places. [2024-12-02 12:57:32,895 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 680 flow [2024-12-02 12:57:32,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:32,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:32,896 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:32,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 12:57:33,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:33,096 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:33,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1113224, now seen corresponding path program 1 times [2024-12-02 12:57:33,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:33,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10395027] [2024-12-02 12:57:33,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:33,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:33,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:33,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10395027] [2024-12-02 12:57:33,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10395027] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:57:33,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592440186] [2024-12-02 12:57:33,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:33,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:33,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:57:33,201 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:57:33,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:57:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:33,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:57:33,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:57:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:33,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:57:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:33,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592440186] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:57:33,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:57:33,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-12-02 12:57:33,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018133855] [2024-12-02 12:57:33,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:57:33,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:57:33,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:33,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:57:33,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:57:33,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2024-12-02 12:57:33,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 680 flow. Second operand has 20 states, 20 states have (on average 18.65) internal successors, (373), 20 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:33,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:33,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2024-12-02 12:57:33,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:37,998 INFO L124 PetriNetUnfolderBase]: 27063/42492 cut-off events. [2024-12-02 12:57:37,999 INFO L125 PetriNetUnfolderBase]: For 95824/96913 co-relation queries the response was YES. [2024-12-02 12:57:38,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161270 conditions, 42492 events. 27063/42492 cut-off events. For 95824/96913 co-relation queries the response was YES. Maximal size of possible extension queue 1780. Compared 339589 event pairs, 17233 based on Foata normal form. 437/34978 useless extension candidates. Maximal degree in co-relation 115706. Up to 27872 conditions per place. [2024-12-02 12:57:38,258 INFO L140 encePairwiseOnDemand]: 54/65 looper letters, 191 selfloop transitions, 20 changer transitions 2/229 dead transitions. [2024-12-02 12:57:38,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 229 transitions, 1847 flow [2024-12-02 12:57:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:57:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 12:57:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 362 transitions. [2024-12-02 12:57:38,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-12-02 12:57:38,259 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 680 flow. Second operand 12 states and 362 transitions. [2024-12-02 12:57:38,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 229 transitions, 1847 flow [2024-12-02 12:57:38,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 229 transitions, 1817 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:57:38,347 INFO L231 Difference]: Finished difference. Result has 129 places, 114 transitions, 787 flow [2024-12-02 12:57:38,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=787, PETRI_PLACES=129, PETRI_TRANSITIONS=114} [2024-12-02 12:57:38,348 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 63 predicate places. [2024-12-02 12:57:38,348 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 114 transitions, 787 flow [2024-12-02 12:57:38,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.65) internal successors, (373), 20 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:38,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:38,348 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:38,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:57:38,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:38,548 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:38,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:38,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1803423056, now seen corresponding path program 2 times [2024-12-02 12:57:38,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:38,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730238880] [2024-12-02 12:57:38,549 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:57:38,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:38,556 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:57:38,556 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:57:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:57:38,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730238880] [2024-12-02 12:57:38,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730238880] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:38,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:38,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:57:38,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140767292] [2024-12-02 12:57:38,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:38,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:57:38,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:38,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:57:38,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:57:38,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:57:38,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 114 transitions, 787 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:38,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:38,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:57:38,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:41,402 INFO L124 PetriNetUnfolderBase]: 15422/25129 cut-off events. [2024-12-02 12:57:41,402 INFO L125 PetriNetUnfolderBase]: For 79921/81774 co-relation queries the response was YES. [2024-12-02 12:57:41,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98964 conditions, 25129 events. 15422/25129 cut-off events. For 79921/81774 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 203633 event pairs, 12468 based on Foata normal form. 557/22440 useless extension candidates. Maximal degree in co-relation 76888. Up to 21723 conditions per place. [2024-12-02 12:57:41,579 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 85 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2024-12-02 12:57:41,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 107 transitions, 908 flow [2024-12-02 12:57:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:57:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:57:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-12-02 12:57:41,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-12-02 12:57:41,580 INFO L175 Difference]: Start difference. First operand has 129 places, 114 transitions, 787 flow. Second operand 3 states and 99 transitions. [2024-12-02 12:57:41,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 107 transitions, 908 flow [2024-12-02 12:57:41,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 107 transitions, 895 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 12:57:41,649 INFO L231 Difference]: Finished difference. Result has 125 places, 107 transitions, 725 flow [2024-12-02 12:57:41,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=725, PETRI_PLACES=125, PETRI_TRANSITIONS=107} [2024-12-02 12:57:41,650 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 59 predicate places. [2024-12-02 12:57:41,650 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 107 transitions, 725 flow [2024-12-02 12:57:41,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:41,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:41,650 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:41,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:57:41,650 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:41,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1429140089, now seen corresponding path program 1 times [2024-12-02 12:57:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:41,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910828269] [2024-12-02 12:57:41,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:41,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:41,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910828269] [2024-12-02 12:57:41,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910828269] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:57:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086719890] [2024-12-02 12:57:41,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:41,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:41,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:57:41,794 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:57:41,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:57:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:41,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:57:41,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:57:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:42,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:57:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:42,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086719890] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:57:42,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:57:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-12-02 12:57:42,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802423713] [2024-12-02 12:57:42,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:57:42,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 12:57:42,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:42,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 12:57:42,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:57:42,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2024-12-02 12:57:42,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 107 transitions, 725 flow. Second operand has 21 states, 21 states have (on average 18.666666666666668) internal successors, (392), 21 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:42,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:42,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2024-12-02 12:57:42,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:46,792 INFO L124 PetriNetUnfolderBase]: 22939/37004 cut-off events. [2024-12-02 12:57:46,793 INFO L125 PetriNetUnfolderBase]: For 103389/104368 co-relation queries the response was YES. [2024-12-02 12:57:46,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143714 conditions, 37004 events. 22939/37004 cut-off events. For 103389/104368 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 299076 event pairs, 16497 based on Foata normal form. 577/32597 useless extension candidates. Maximal degree in co-relation 143679. Up to 22438 conditions per place. [2024-12-02 12:57:47,045 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 156 selfloop transitions, 27 changer transitions 0/199 dead transitions. [2024-12-02 12:57:47,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 199 transitions, 1700 flow [2024-12-02 12:57:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:57:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 12:57:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 321 transitions. [2024-12-02 12:57:47,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4489510489510489 [2024-12-02 12:57:47,046 INFO L175 Difference]: Start difference. First operand has 125 places, 107 transitions, 725 flow. Second operand 11 states and 321 transitions. [2024-12-02 12:57:47,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 199 transitions, 1700 flow [2024-12-02 12:57:47,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 199 transitions, 1699 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:57:47,137 INFO L231 Difference]: Finished difference. Result has 138 places, 117 transitions, 918 flow [2024-12-02 12:57:47,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=918, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2024-12-02 12:57:47,137 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 72 predicate places. [2024-12-02 12:57:47,137 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 918 flow [2024-12-02 12:57:47,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.666666666666668) internal successors, (392), 21 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:47,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:47,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:47,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 12:57:47,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:47,338 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:47,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1803423057, now seen corresponding path program 2 times [2024-12-02 12:57:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:47,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690434752] [2024-12-02 12:57:47,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:57:47,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:47,346 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:57:47,346 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:57:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:57:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:47,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690434752] [2024-12-02 12:57:47,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690434752] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:47,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:47,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:57:47,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509940221] [2024-12-02 12:57:47,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:47,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:57:47,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:47,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:57:47,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:57:47,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:57:47,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 918 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:47,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:47,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:57:47,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:49,565 INFO L124 PetriNetUnfolderBase]: 12448/21068 cut-off events. [2024-12-02 12:57:49,565 INFO L125 PetriNetUnfolderBase]: For 79044/80701 co-relation queries the response was YES. [2024-12-02 12:57:49,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83649 conditions, 21068 events. 12448/21068 cut-off events. For 79044/80701 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 172726 event pairs, 9624 based on Foata normal form. 510/20384 useless extension candidates. Maximal degree in co-relation 83609. Up to 17597 conditions per place. [2024-12-02 12:57:49,727 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 87 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2024-12-02 12:57:49,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 110 transitions, 1043 flow [2024-12-02 12:57:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:57:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:57:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-12-02 12:57:49,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49743589743589745 [2024-12-02 12:57:49,728 INFO L175 Difference]: Start difference. First operand has 138 places, 117 transitions, 918 flow. Second operand 3 states and 97 transitions. [2024-12-02 12:57:49,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 110 transitions, 1043 flow [2024-12-02 12:57:49,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 110 transitions, 1001 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-12-02 12:57:49,792 INFO L231 Difference]: Finished difference. Result has 132 places, 110 transitions, 827 flow [2024-12-02 12:57:49,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=827, PETRI_PLACES=132, PETRI_TRANSITIONS=110} [2024-12-02 12:57:49,792 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2024-12-02 12:57:49,792 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 110 transitions, 827 flow [2024-12-02 12:57:49,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:49,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:49,792 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:49,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 12:57:49,793 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:49,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:49,793 INFO L85 PathProgramCache]: Analyzing trace with hash 24438132, now seen corresponding path program 1 times [2024-12-02 12:57:49,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:49,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972687170] [2024-12-02 12:57:49,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:49,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972687170] [2024-12-02 12:57:49,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972687170] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:57:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428764010] [2024-12-02 12:57:49,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:49,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:49,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:57:49,888 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:57:49,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 12:57:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:49,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 12:57:49,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:57:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:50,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:57:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428764010] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:57:50,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:57:50,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-12-02 12:57:50,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820076694] [2024-12-02 12:57:50,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:57:50,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 12:57:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:50,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 12:57:50,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:57:50,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-12-02 12:57:50,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 110 transitions, 827 flow. Second operand has 21 states, 21 states have (on average 16.714285714285715) internal successors, (351), 21 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:50,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:50,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-12-02 12:57:50,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:53,535 INFO L124 PetriNetUnfolderBase]: 17546/27667 cut-off events. [2024-12-02 12:57:53,535 INFO L125 PetriNetUnfolderBase]: For 91240/93635 co-relation queries the response was YES. [2024-12-02 12:57:53,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107527 conditions, 27667 events. 17546/27667 cut-off events. For 91240/93635 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 210347 event pairs, 12432 based on Foata normal form. 767/26943 useless extension candidates. Maximal degree in co-relation 107487. Up to 19683 conditions per place. [2024-12-02 12:57:53,772 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 122 selfloop transitions, 22 changer transitions 23/183 dead transitions. [2024-12-02 12:57:53,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 183 transitions, 1624 flow [2024-12-02 12:57:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:57:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:57:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-12-02 12:57:53,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3984615384615385 [2024-12-02 12:57:53,773 INFO L175 Difference]: Start difference. First operand has 132 places, 110 transitions, 827 flow. Second operand 10 states and 259 transitions. [2024-12-02 12:57:53,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 183 transitions, 1624 flow [2024-12-02 12:57:53,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 183 transitions, 1623 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:57:53,865 INFO L231 Difference]: Finished difference. Result has 142 places, 105 transitions, 813 flow [2024-12-02 12:57:53,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=813, PETRI_PLACES=142, PETRI_TRANSITIONS=105} [2024-12-02 12:57:53,866 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 76 predicate places. [2024-12-02 12:57:53,866 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 105 transitions, 813 flow [2024-12-02 12:57:53,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 16.714285714285715) internal successors, (351), 21 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:53,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:53,866 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:53,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 12:57:54,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:54,066 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:54,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:54,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1802684445, now seen corresponding path program 1 times [2024-12-02 12:57:54,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:54,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270351786] [2024-12-02 12:57:54,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:54,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:54,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:54,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270351786] [2024-12-02 12:57:54,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270351786] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:57:54,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608376175] [2024-12-02 12:57:54,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:54,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:54,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:57:54,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:57:54,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 12:57:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:54,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:57:54,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:57:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:54,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:57:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:57:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608376175] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:57:54,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:57:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-12-02 12:57:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145391804] [2024-12-02 12:57:54,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:57:54,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:57:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:54,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:57:54,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:57:54,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-12-02 12:57:54,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 105 transitions, 813 flow. Second operand has 20 states, 20 states have (on average 17.1) internal successors, (342), 20 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:54,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:54,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-12-02 12:57:54,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:57:57,885 INFO L124 PetriNetUnfolderBase]: 16501/24798 cut-off events. [2024-12-02 12:57:57,885 INFO L125 PetriNetUnfolderBase]: For 101323/103327 co-relation queries the response was YES. [2024-12-02 12:57:57,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103332 conditions, 24798 events. 16501/24798 cut-off events. For 101323/103327 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 176347 event pairs, 9457 based on Foata normal form. 838/23928 useless extension candidates. Maximal degree in co-relation 103289. Up to 8201 conditions per place. [2024-12-02 12:57:58,093 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 202 selfloop transitions, 25 changer transitions 7/251 dead transitions. [2024-12-02 12:57:58,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 251 transitions, 2361 flow [2024-12-02 12:57:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:57:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-12-02 12:57:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 381 transitions. [2024-12-02 12:57:58,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4186813186813187 [2024-12-02 12:57:58,095 INFO L175 Difference]: Start difference. First operand has 142 places, 105 transitions, 813 flow. Second operand 14 states and 381 transitions. [2024-12-02 12:57:58,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 251 transitions, 2361 flow [2024-12-02 12:57:58,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 251 transitions, 2296 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-12-02 12:57:58,224 INFO L231 Difference]: Finished difference. Result has 149 places, 109 transitions, 876 flow [2024-12-02 12:57:58,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=876, PETRI_PLACES=149, PETRI_TRANSITIONS=109} [2024-12-02 12:57:58,224 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 83 predicate places. [2024-12-02 12:57:58,225 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 109 transitions, 876 flow [2024-12-02 12:57:58,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.1) internal successors, (342), 20 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:58,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:57:58,225 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:58,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 12:57:58,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:57:58,425 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:57:58,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash 648822494, now seen corresponding path program 2 times [2024-12-02 12:57:58,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:58,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62065556] [2024-12-02 12:57:58,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:57:58,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:58,440 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:57:58,440 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:57:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:57:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62065556] [2024-12-02 12:57:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62065556] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:57:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415070521] [2024-12-02 12:57:58,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:58,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:57:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:58,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:57:58,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:57:58,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:57:58,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 109 transitions, 876 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:57:58,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:57:58,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:57:58,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:58:00,954 INFO L124 PetriNetUnfolderBase]: 10309/17547 cut-off events. [2024-12-02 12:58:00,954 INFO L125 PetriNetUnfolderBase]: For 76672/78231 co-relation queries the response was YES. [2024-12-02 12:58:01,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74065 conditions, 17547 events. 10309/17547 cut-off events. For 76672/78231 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 140585 event pairs, 8108 based on Foata normal form. 353/17050 useless extension candidates. Maximal degree in co-relation 74019. Up to 14641 conditions per place. [2024-12-02 12:58:01,062 INFO L140 encePairwiseOnDemand]: 63/65 looper letters, 81 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-12-02 12:58:01,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 108 transitions, 1033 flow [2024-12-02 12:58:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:58:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:58:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-12-02 12:58:01,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-12-02 12:58:01,063 INFO L175 Difference]: Start difference. First operand has 149 places, 109 transitions, 876 flow. Second operand 3 states and 95 transitions. [2024-12-02 12:58:01,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 108 transitions, 1033 flow [2024-12-02 12:58:01,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 108 transitions, 1001 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-12-02 12:58:01,129 INFO L231 Difference]: Finished difference. Result has 143 places, 108 transitions, 839 flow [2024-12-02 12:58:01,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=839, PETRI_PLACES=143, PETRI_TRANSITIONS=108} [2024-12-02 12:58:01,130 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 77 predicate places. [2024-12-02 12:58:01,130 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 108 transitions, 839 flow [2024-12-02 12:58:01,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:01,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:58:01,130 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:01,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 12:58:01,130 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:58:01,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash 648822493, now seen corresponding path program 1 times [2024-12-02 12:58:01,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:01,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048627045] [2024-12-02 12:58:01,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:01,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:58:01,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048627045] [2024-12-02 12:58:01,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048627045] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:01,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:01,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:58:01,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542489288] [2024-12-02 12:58:01,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:01,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:58:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:01,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:58:01,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:58:01,182 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-12-02 12:58:01,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 108 transitions, 839 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:01,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:58:01,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-12-02 12:58:01,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:58:02,857 INFO L124 PetriNetUnfolderBase]: 9549/16243 cut-off events. [2024-12-02 12:58:02,857 INFO L125 PetriNetUnfolderBase]: For 70487/71868 co-relation queries the response was YES. [2024-12-02 12:58:02,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67564 conditions, 16243 events. 9549/16243 cut-off events. For 70487/71868 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 128318 event pairs, 7472 based on Foata normal form. 351/16052 useless extension candidates. Maximal degree in co-relation 67518. Up to 13581 conditions per place. [2024-12-02 12:58:02,943 INFO L140 encePairwiseOnDemand]: 63/65 looper letters, 80 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2024-12-02 12:58:02,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 107 transitions, 994 flow [2024-12-02 12:58:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:58:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:58:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-12-02 12:58:02,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-12-02 12:58:02,944 INFO L175 Difference]: Start difference. First operand has 143 places, 108 transitions, 839 flow. Second operand 3 states and 94 transitions. [2024-12-02 12:58:02,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 107 transitions, 994 flow [2024-12-02 12:58:02,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 107 transitions, 993 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:58:02,992 INFO L231 Difference]: Finished difference. Result has 143 places, 107 transitions, 833 flow [2024-12-02 12:58:02,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=833, PETRI_PLACES=143, PETRI_TRANSITIONS=107} [2024-12-02 12:58:02,992 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 77 predicate places. [2024-12-02 12:58:02,992 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 107 transitions, 833 flow [2024-12-02 12:58:02,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:02,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:58:02,992 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:02,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 12:58:02,993 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:58:02,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash 648822491, now seen corresponding path program 1 times [2024-12-02 12:58:02,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:02,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43853531] [2024-12-02 12:58:02,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:02,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43853531] [2024-12-02 12:58:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43853531] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:58:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205567899] [2024-12-02 12:58:03,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:03,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:58:03,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:58:03,221 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:58:03,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 12:58:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:03,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 12:58:03,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:58:03,343 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 [2024-12-02 12:58:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:03,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:58:03,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-02 12:58:03,508 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 20 treesize of output 16 [2024-12-02 12:58:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:03,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205567899] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:58:03,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:58:03,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-12-02 12:58:03,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527867773] [2024-12-02 12:58:03,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:58:03,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:58:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:03,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:58:03,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:58:03,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 65 [2024-12-02 12:58:03,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 107 transitions, 833 flow. Second operand has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:03,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:58:03,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 65 [2024-12-02 12:58:03,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:58:07,360 INFO L124 PetriNetUnfolderBase]: 17803/28119 cut-off events. [2024-12-02 12:58:07,360 INFO L125 PetriNetUnfolderBase]: For 110539/114664 co-relation queries the response was YES. [2024-12-02 12:58:07,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112994 conditions, 28119 events. 17803/28119 cut-off events. For 110539/114664 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 213715 event pairs, 4680 based on Foata normal form. 1002/28613 useless extension candidates. Maximal degree in co-relation 112947. Up to 6509 conditions per place. [2024-12-02 12:58:07,618 INFO L140 encePairwiseOnDemand]: 54/65 looper letters, 297 selfloop transitions, 21 changer transitions 0/339 dead transitions. [2024-12-02 12:58:07,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 339 transitions, 2992 flow [2024-12-02 12:58:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:58:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 12:58:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 428 transitions. [2024-12-02 12:58:07,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.438974358974359 [2024-12-02 12:58:07,620 INFO L175 Difference]: Start difference. First operand has 143 places, 107 transitions, 833 flow. Second operand 15 states and 428 transitions. [2024-12-02 12:58:07,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 339 transitions, 2992 flow [2024-12-02 12:58:07,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 339 transitions, 2991 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:58:07,805 INFO L231 Difference]: Finished difference. Result has 158 places, 112 transitions, 925 flow [2024-12-02 12:58:07,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=925, PETRI_PLACES=158, PETRI_TRANSITIONS=112} [2024-12-02 12:58:07,806 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 92 predicate places. [2024-12-02 12:58:07,806 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 112 transitions, 925 flow [2024-12-02 12:58:07,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:07,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:58:07,806 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:07,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 12:58:08,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 12:58:08,006 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:58:08,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash 648822490, now seen corresponding path program 1 times [2024-12-02 12:58:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437709183] [2024-12-02 12:58:08,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:08,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:08,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437709183] [2024-12-02 12:58:08,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437709183] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:58:08,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253808178] [2024-12-02 12:58:08,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:08,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:58:08,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:58:08,246 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:58:08,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 12:58:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:08,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 12:58:08,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:58:08,394 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 [2024-12-02 12:58:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:08,478 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:58:08,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:58:08,582 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 24 treesize of output 20 [2024-12-02 12:58:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:08,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253808178] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:58:08,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:58:08,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-12-02 12:58:08,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80190309] [2024-12-02 12:58:08,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:58:08,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:58:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:08,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:58:08,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:58:08,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 65 [2024-12-02 12:58:08,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 112 transitions, 925 flow. Second operand has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:08,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:58:08,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 65 [2024-12-02 12:58:08,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:58:12,420 INFO L124 PetriNetUnfolderBase]: 17043/27156 cut-off events. [2024-12-02 12:58:12,420 INFO L125 PetriNetUnfolderBase]: For 126864/130876 co-relation queries the response was YES. [2024-12-02 12:58:12,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114466 conditions, 27156 events. 17043/27156 cut-off events. For 126864/130876 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 205936 event pairs, 3688 based on Foata normal form. 1086/27878 useless extension candidates. Maximal degree in co-relation 114416. Up to 6509 conditions per place. [2024-12-02 12:58:12,699 INFO L140 encePairwiseOnDemand]: 54/65 looper letters, 296 selfloop transitions, 21 changer transitions 0/338 dead transitions. [2024-12-02 12:58:12,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 338 transitions, 3045 flow [2024-12-02 12:58:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:58:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 12:58:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 427 transitions. [2024-12-02 12:58:12,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4379487179487179 [2024-12-02 12:58:12,700 INFO L175 Difference]: Start difference. First operand has 158 places, 112 transitions, 925 flow. Second operand 15 states and 427 transitions. [2024-12-02 12:58:12,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 338 transitions, 3045 flow [2024-12-02 12:58:13,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 338 transitions, 3003 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-12-02 12:58:13,026 INFO L231 Difference]: Finished difference. Result has 162 places, 111 transitions, 918 flow [2024-12-02 12:58:13,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=918, PETRI_PLACES=162, PETRI_TRANSITIONS=111} [2024-12-02 12:58:13,027 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 96 predicate places. [2024-12-02 12:58:13,027 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 111 transitions, 918 flow [2024-12-02 12:58:13,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:13,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:58:13,027 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:13,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 12:58:13,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 12:58:13,227 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:58:13,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1507903992, now seen corresponding path program 1 times [2024-12-02 12:58:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351260574] [2024-12-02 12:58:13,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:13,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:13,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:13,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351260574] [2024-12-02 12:58:13,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351260574] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:58:13,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724291819] [2024-12-02 12:58:13,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:13,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:58:13,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:58:13,322 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:58:13,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 12:58:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:13,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 12:58:13,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:58:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:13,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:58:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724291819] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:58:13,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:58:13,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-12-02 12:58:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182739400] [2024-12-02 12:58:13,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:58:13,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 12:58:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:13,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 12:58:13,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:58:13,701 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-12-02 12:58:13,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 111 transitions, 918 flow. Second operand has 19 states, 19 states have (on average 16.842105263157894) internal successors, (320), 19 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:13,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:58:13,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-12-02 12:58:13,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:58:16,082 INFO L124 PetriNetUnfolderBase]: 15139/22546 cut-off events. [2024-12-02 12:58:16,082 INFO L125 PetriNetUnfolderBase]: For 122799/124875 co-relation queries the response was YES. [2024-12-02 12:58:16,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103663 conditions, 22546 events. 15139/22546 cut-off events. For 122799/124875 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 152872 event pairs, 11031 based on Foata normal form. 174/21993 useless extension candidates. Maximal degree in co-relation 103615. Up to 18862 conditions per place. [2024-12-02 12:58:16,296 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 55 selfloop transitions, 10 changer transitions 79/158 dead transitions. [2024-12-02 12:58:16,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 1568 flow [2024-12-02 12:58:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:58:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:58:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-12-02 12:58:16,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37384615384615383 [2024-12-02 12:58:16,298 INFO L175 Difference]: Start difference. First operand has 162 places, 111 transitions, 918 flow. Second operand 10 states and 243 transitions. [2024-12-02 12:58:16,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 1568 flow [2024-12-02 12:58:16,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 158 transitions, 1505 flow, removed 0 selfloop flow, removed 16 redundant places. [2024-12-02 12:58:16,493 INFO L231 Difference]: Finished difference. Result has 153 places, 79 transitions, 554 flow [2024-12-02 12:58:16,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=554, PETRI_PLACES=153, PETRI_TRANSITIONS=79} [2024-12-02 12:58:16,493 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 87 predicate places. [2024-12-02 12:58:16,493 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 79 transitions, 554 flow [2024-12-02 12:58:16,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.842105263157894) internal successors, (320), 19 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:16,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:58:16,494 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:16,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 12:58:16,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:58:16,694 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:58:16,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash -871120836, now seen corresponding path program 2 times [2024-12-02 12:58:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022563243] [2024-12-02 12:58:16,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:58:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:16,710 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:58:16,710 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:58:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:17,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022563243] [2024-12-02 12:58:17,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022563243] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:58:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230576869] [2024-12-02 12:58:17,410 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:58:17,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:58:17,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:58:17,412 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:58:17,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 12:58:17,504 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:58:17,504 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:58:17,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 12:58:17,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:58:17,525 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 [2024-12-02 12:58:17,563 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 27 treesize of output 11 [2024-12-02 12:58:17,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2024-12-02 12:58:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:17,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:58:18,424 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 34 treesize of output 32 [2024-12-02 12:58:18,429 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 262 treesize of output 250 [2024-12-02 12:58:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:18,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230576869] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:58:18,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:58:18,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-12-02 12:58:18,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170538313] [2024-12-02 12:58:18,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:58:18,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 12:58:18,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:18,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 12:58:18,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2024-12-02 12:58:18,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:58:18,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 79 transitions, 554 flow. Second operand has 32 states, 32 states have (on average 19.5) internal successors, (624), 32 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:18,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:58:18,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:58:18,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:58:25,004 INFO L124 PetriNetUnfolderBase]: 23455/37882 cut-off events. [2024-12-02 12:58:25,004 INFO L125 PetriNetUnfolderBase]: For 157277/160523 co-relation queries the response was YES. [2024-12-02 12:58:25,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160785 conditions, 37882 events. 23455/37882 cut-off events. For 157277/160523 co-relation queries the response was YES. Maximal size of possible extension queue 1229. Compared 303393 event pairs, 6673 based on Foata normal form. 536/36888 useless extension candidates. Maximal degree in co-relation 160748. Up to 8470 conditions per place. [2024-12-02 12:58:25,398 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 361 selfloop transitions, 58 changer transitions 0/436 dead transitions. [2024-12-02 12:58:25,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 436 transitions, 4143 flow [2024-12-02 12:58:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 12:58:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-12-02 12:58:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 814 transitions. [2024-12-02 12:58:25,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43183023872679044 [2024-12-02 12:58:25,400 INFO L175 Difference]: Start difference. First operand has 153 places, 79 transitions, 554 flow. Second operand 29 states and 814 transitions. [2024-12-02 12:58:25,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 436 transitions, 4143 flow [2024-12-02 12:58:26,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 436 transitions, 3782 flow, removed 94 selfloop flow, removed 16 redundant places. [2024-12-02 12:58:26,148 INFO L231 Difference]: Finished difference. Result has 151 places, 121 transitions, 1006 flow [2024-12-02 12:58:26,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1006, PETRI_PLACES=151, PETRI_TRANSITIONS=121} [2024-12-02 12:58:26,149 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 85 predicate places. [2024-12-02 12:58:26,149 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 121 transitions, 1006 flow [2024-12-02 12:58:26,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 19.5) internal successors, (624), 32 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:26,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:58:26,149 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:26,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-12-02 12:58:26,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 12:58:26,349 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:58:26,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -871120837, now seen corresponding path program 2 times [2024-12-02 12:58:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:26,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523851753] [2024-12-02 12:58:26,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:58:26,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:26,361 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:58:26,361 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:58:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:26,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523851753] [2024-12-02 12:58:26,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523851753] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:58:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922933588] [2024-12-02 12:58:26,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:58:26,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:58:26,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:58:26,829 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:58:26,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 12:58:26,932 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:58:26,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:58:26,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 12:58:26,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:58:26,946 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 [2024-12-02 12:58:26,962 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 29 treesize of output 13 [2024-12-02 12:58:27,045 INFO L349 Elim1Store]: treesize reduction 42, result has 37.3 percent of original size [2024-12-02 12:58:27,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 35 [2024-12-02 12:58:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:27,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:58:32,416 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 35 treesize of output 33 [2024-12-02 12:58:32,422 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 254 treesize of output 242 [2024-12-02 12:58:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:32,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922933588] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:58:32,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:58:32,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-12-02 12:58:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670093978] [2024-12-02 12:58:32,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:58:32,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 12:58:32,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:32,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 12:58:32,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=707, Unknown=1, NotChecked=0, Total=812 [2024-12-02 12:58:36,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 12:58:37,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 12:58:41,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 12:58:42,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 65 [2024-12-02 12:58:42,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 121 transitions, 1006 flow. Second operand has 29 states, 29 states have (on average 15.827586206896552) internal successors, (459), 29 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:42,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:58:42,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 65 [2024-12-02 12:58:42,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:58:51,611 INFO L124 PetriNetUnfolderBase]: 36887/58782 cut-off events. [2024-12-02 12:58:51,611 INFO L125 PetriNetUnfolderBase]: For 202151/202151 co-relation queries the response was YES. [2024-12-02 12:58:51,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236466 conditions, 58782 events. 36887/58782 cut-off events. For 202151/202151 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 451062 event pairs, 14732 based on Foata normal form. 598/57636 useless extension candidates. Maximal degree in co-relation 236431. Up to 7547 conditions per place. [2024-12-02 12:58:52,096 INFO L140 encePairwiseOnDemand]: 54/65 looper letters, 401 selfloop transitions, 50 changer transitions 0/463 dead transitions. [2024-12-02 12:58:52,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 463 transitions, 4116 flow [2024-12-02 12:58:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 12:58:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-12-02 12:58:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 695 transitions. [2024-12-02 12:58:52,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2024-12-02 12:58:52,098 INFO L175 Difference]: Start difference. First operand has 151 places, 121 transitions, 1006 flow. Second operand 27 states and 695 transitions. [2024-12-02 12:58:52,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 463 transitions, 4116 flow [2024-12-02 12:58:53,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 463 transitions, 3992 flow, removed 17 selfloop flow, removed 14 redundant places. [2024-12-02 12:58:53,023 INFO L231 Difference]: Finished difference. Result has 163 places, 122 transitions, 994 flow [2024-12-02 12:58:53,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=994, PETRI_PLACES=163, PETRI_TRANSITIONS=122} [2024-12-02 12:58:53,023 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 97 predicate places. [2024-12-02 12:58:53,023 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 122 transitions, 994 flow [2024-12-02 12:58:53,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 15.827586206896552) internal successors, (459), 29 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:53,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:58:53,024 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:53,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 12:58:53,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 12:58:53,224 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:58:53,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2057613447, now seen corresponding path program 2 times [2024-12-02 12:58:53,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:53,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119298390] [2024-12-02 12:58:53,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:58:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:53,236 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:58:53,237 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:58:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:53,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119298390] [2024-12-02 12:58:53,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119298390] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:58:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141506537] [2024-12-02 12:58:53,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:58:53,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:58:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:58:53,583 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:58:53,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 12:58:53,697 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:58:53,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:58:53,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 12:58:53,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:58:53,750 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 [2024-12-02 12:58:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:53,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:58:54,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:58:54,011 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 24 treesize of output 20 [2024-12-02 12:58:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:58:54,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141506537] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:58:54,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:58:54,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-12-02 12:58:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206132890] [2024-12-02 12:58:54,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:58:54,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 12:58:54,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:54,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 12:58:54,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2024-12-02 12:58:54,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-12-02 12:58:54,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 122 transitions, 994 flow. Second operand has 25 states, 25 states have (on average 16.8) internal successors, (420), 25 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:58:54,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:58:54,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-12-02 12:58:54,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:59:03,483 INFO L124 PetriNetUnfolderBase]: 41920/61574 cut-off events. [2024-12-02 12:59:03,483 INFO L125 PetriNetUnfolderBase]: For 322627/332981 co-relation queries the response was YES. [2024-12-02 12:59:03,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271989 conditions, 61574 events. 41920/61574 cut-off events. For 322627/332981 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 453978 event pairs, 6175 based on Foata normal form. 1908/63265 useless extension candidates. Maximal degree in co-relation 271957. Up to 12957 conditions per place. [2024-12-02 12:59:04,030 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 534 selfloop transitions, 45 changer transitions 0/597 dead transitions. [2024-12-02 12:59:04,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 597 transitions, 6054 flow [2024-12-02 12:59:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 12:59:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-12-02 12:59:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 683 transitions. [2024-12-02 12:59:04,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4378205128205128 [2024-12-02 12:59:04,032 INFO L175 Difference]: Start difference. First operand has 163 places, 122 transitions, 994 flow. Second operand 24 states and 683 transitions. [2024-12-02 12:59:04,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 597 transitions, 6054 flow [2024-12-02 12:59:04,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 597 transitions, 5736 flow, removed 77 selfloop flow, removed 20 redundant places. [2024-12-02 12:59:04,884 INFO L231 Difference]: Finished difference. Result has 171 places, 138 transitions, 1127 flow [2024-12-02 12:59:04,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1127, PETRI_PLACES=171, PETRI_TRANSITIONS=138} [2024-12-02 12:59:04,884 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 105 predicate places. [2024-12-02 12:59:04,884 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 138 transitions, 1127 flow [2024-12-02 12:59:04,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 16.8) internal successors, (420), 25 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:04,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:59:04,885 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:59:04,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 12:59:05,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 12:59:05,085 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:59:05,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2057613448, now seen corresponding path program 1 times [2024-12-02 12:59:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322158756] [2024-12-02 12:59:05,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:05,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:59:05,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:05,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322158756] [2024-12-02 12:59:05,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322158756] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:59:05,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140159695] [2024-12-02 12:59:05,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:05,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:05,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:05,486 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:59:05,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 12:59:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:05,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 12:59:05,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:59:05,645 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 [2024-12-02 12:59:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:59:05,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:59:05,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-02 12:59:05,911 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 20 treesize of output 16 [2024-12-02 12:59:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:59:05,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140159695] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:59:05,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:59:05,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 26 [2024-12-02 12:59:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465976140] [2024-12-02 12:59:05,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:59:05,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 12:59:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:05,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 12:59:05,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2024-12-02 12:59:06,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-12-02 12:59:06,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 138 transitions, 1127 flow. Second operand has 28 states, 28 states have (on average 16.714285714285715) internal successors, (468), 28 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:06,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:59:06,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-12-02 12:59:06,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:59:14,538 INFO L124 PetriNetUnfolderBase]: 40929/60974 cut-off events. [2024-12-02 12:59:14,539 INFO L125 PetriNetUnfolderBase]: For 326863/335704 co-relation queries the response was YES. [2024-12-02 12:59:15,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278740 conditions, 60974 events. 40929/60974 cut-off events. For 326863/335704 co-relation queries the response was YES. Maximal size of possible extension queue 1654. Compared 458196 event pairs, 8477 based on Foata normal form. 1676/62321 useless extension candidates. Maximal degree in co-relation 278704. Up to 11106 conditions per place. [2024-12-02 12:59:15,306 INFO L140 encePairwiseOnDemand]: 54/65 looper letters, 485 selfloop transitions, 42 changer transitions 0/545 dead transitions. [2024-12-02 12:59:15,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 545 transitions, 5370 flow [2024-12-02 12:59:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 12:59:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-12-02 12:59:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 587 transitions. [2024-12-02 12:59:15,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43003663003663006 [2024-12-02 12:59:15,308 INFO L175 Difference]: Start difference. First operand has 171 places, 138 transitions, 1127 flow. Second operand 21 states and 587 transitions. [2024-12-02 12:59:15,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 545 transitions, 5370 flow [2024-12-02 12:59:16,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 545 transitions, 5283 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-12-02 12:59:16,156 INFO L231 Difference]: Finished difference. Result has 184 places, 139 transitions, 1155 flow [2024-12-02 12:59:16,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1155, PETRI_PLACES=184, PETRI_TRANSITIONS=139} [2024-12-02 12:59:16,156 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 118 predicate places. [2024-12-02 12:59:16,156 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 139 transitions, 1155 flow [2024-12-02 12:59:16,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.714285714285715) internal successors, (468), 28 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:16,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:59:16,156 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:59:16,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 12:59:16,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 12:59:16,357 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:59:16,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 748185504, now seen corresponding path program 1 times [2024-12-02 12:59:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142309539] [2024-12-02 12:59:16,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:16,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:59:16,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:16,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142309539] [2024-12-02 12:59:16,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142309539] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:59:16,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765282600] [2024-12-02 12:59:16,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:16,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:16,413 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:59:16,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 12:59:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:16,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:59:16,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:59:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:59:16,540 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:59:16,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765282600] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:59:16,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:59:16,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 12:59:16,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56573625] [2024-12-02 12:59:16,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:59:16,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:59:16,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:16,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:59:16,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:59:16,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:59:16,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 139 transitions, 1155 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:16,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:59:16,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:59:16,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:59:23,409 INFO L124 PetriNetUnfolderBase]: 33333/52968 cut-off events. [2024-12-02 12:59:23,410 INFO L125 PetriNetUnfolderBase]: For 322732/330859 co-relation queries the response was YES. [2024-12-02 12:59:23,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240994 conditions, 52968 events. 33333/52968 cut-off events. For 322732/330859 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 427520 event pairs, 3032 based on Foata normal form. 2232/54999 useless extension candidates. Maximal degree in co-relation 240956. Up to 18128 conditions per place. [2024-12-02 12:59:23,908 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 406 selfloop transitions, 9 changer transitions 0/438 dead transitions. [2024-12-02 12:59:23,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 438 transitions, 4717 flow [2024-12-02 12:59:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:59:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:59:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-12-02 12:59:23,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2024-12-02 12:59:23,909 INFO L175 Difference]: Start difference. First operand has 184 places, 139 transitions, 1155 flow. Second operand 6 states and 213 transitions. [2024-12-02 12:59:23,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 438 transitions, 4717 flow [2024-12-02 12:59:24,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 438 transitions, 4440 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-12-02 12:59:24,534 INFO L231 Difference]: Finished difference. Result has 170 places, 138 transitions, 1096 flow [2024-12-02 12:59:24,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1096, PETRI_PLACES=170, PETRI_TRANSITIONS=138} [2024-12-02 12:59:24,535 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 104 predicate places. [2024-12-02 12:59:24,535 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 138 transitions, 1096 flow [2024-12-02 12:59:24,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:24,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:59:24,535 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 12:59:24,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 12:59:24,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 12:59:24,735 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:59:24,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1718914982, now seen corresponding path program 1 times [2024-12-02 12:59:24,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:24,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331867482] [2024-12-02 12:59:24,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:24,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:59:24,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:24,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331867482] [2024-12-02 12:59:24,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331867482] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:59:24,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391300274] [2024-12-02 12:59:24,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:24,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:24,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:24,778 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:59:24,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 12:59:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:24,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:59:24,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:59:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:59:24,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:59:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:59:24,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391300274] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:59:24,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:59:24,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:59:24,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975084068] [2024-12-02 12:59:24,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:59:24,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:59:24,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:24,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:59:24,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:59:24,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:59:24,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 138 transitions, 1096 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:24,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:59:24,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:59:24,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:59:36,437 INFO L124 PetriNetUnfolderBase]: 53587/86201 cut-off events. [2024-12-02 12:59:36,438 INFO L125 PetriNetUnfolderBase]: For 497055/509472 co-relation queries the response was YES. [2024-12-02 12:59:36,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391389 conditions, 86201 events. 53587/86201 cut-off events. For 497055/509472 co-relation queries the response was YES. Maximal size of possible extension queue 1808. Compared 729588 event pairs, 11570 based on Foata normal form. 3406/89188 useless extension candidates. Maximal degree in co-relation 391352. Up to 27350 conditions per place. [2024-12-02 12:59:37,446 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 715 selfloop transitions, 13 changer transitions 0/751 dead transitions. [2024-12-02 12:59:37,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 751 transitions, 7728 flow [2024-12-02 12:59:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:59:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:59:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 371 transitions. [2024-12-02 12:59:37,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5707692307692308 [2024-12-02 12:59:37,447 INFO L175 Difference]: Start difference. First operand has 170 places, 138 transitions, 1096 flow. Second operand 10 states and 371 transitions. [2024-12-02 12:59:37,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 751 transitions, 7728 flow [2024-12-02 12:59:38,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 751 transitions, 7684 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-12-02 12:59:38,385 INFO L231 Difference]: Finished difference. Result has 176 places, 145 transitions, 1162 flow [2024-12-02 12:59:38,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1162, PETRI_PLACES=176, PETRI_TRANSITIONS=145} [2024-12-02 12:59:38,386 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 110 predicate places. [2024-12-02 12:59:38,386 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 145 transitions, 1162 flow [2024-12-02 12:59:38,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:38,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:59:38,386 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:59:38,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 12:59:38,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 12:59:38,586 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:59:38,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1681597421, now seen corresponding path program 1 times [2024-12-02 12:59:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:38,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965071236] [2024-12-02 12:59:38,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:38,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:59:38,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:38,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965071236] [2024-12-02 12:59:38,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965071236] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:59:38,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575248941] [2024-12-02 12:59:38,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:38,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:38,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:38,630 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:59:38,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 12:59:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:38,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:59:38,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:59:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:59:38,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:59:38,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575248941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:59:38,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:59:38,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 12:59:38,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204312128] [2024-12-02 12:59:38,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:59:38,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:59:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:38,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:59:38,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:59:38,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-12-02 12:59:38,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 145 transitions, 1162 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:38,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:59:38,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-12-02 12:59:38,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:59:49,809 INFO L124 PetriNetUnfolderBase]: 57655/89029 cut-off events. [2024-12-02 12:59:49,809 INFO L125 PetriNetUnfolderBase]: For 511694/525598 co-relation queries the response was YES. [2024-12-02 12:59:50,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407666 conditions, 89029 events. 57655/89029 cut-off events. For 511694/525598 co-relation queries the response was YES. Maximal size of possible extension queue 2091. Compared 730552 event pairs, 7756 based on Foata normal form. 2977/91639 useless extension candidates. Maximal degree in co-relation 407627. Up to 28530 conditions per place. [2024-12-02 12:59:50,634 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 307 selfloop transitions, 19 changer transitions 0/348 dead transitions. [2024-12-02 12:59:50,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 348 transitions, 3585 flow [2024-12-02 12:59:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:59:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:59:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2024-12-02 12:59:50,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5358974358974359 [2024-12-02 12:59:50,635 INFO L175 Difference]: Start difference. First operand has 176 places, 145 transitions, 1162 flow. Second operand 6 states and 209 transitions. [2024-12-02 12:59:50,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 348 transitions, 3585 flow [2024-12-02 12:59:53,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 348 transitions, 3553 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:59:53,944 INFO L231 Difference]: Finished difference. Result has 177 places, 144 transitions, 1188 flow [2024-12-02 12:59:53,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1188, PETRI_PLACES=177, PETRI_TRANSITIONS=144} [2024-12-02 12:59:53,944 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 111 predicate places. [2024-12-02 12:59:53,944 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 144 transitions, 1188 flow [2024-12-02 12:59:53,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:53,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:59:53,944 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:59:53,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 12:59:54,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 12:59:54,145 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 12:59:54,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1836545958, now seen corresponding path program 1 times [2024-12-02 12:59:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235978194] [2024-12-02 12:59:54,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:59:54,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:54,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235978194] [2024-12-02 12:59:54,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235978194] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:59:54,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015543526] [2024-12-02 12:59:54,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:54,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:59:54,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:59:54,551 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:59:54,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 12:59:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:54,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 12:59:54,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:59:54,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-12-02 12:59:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:59:55,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:59:55,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-12-02 12:59:55,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-12-02 12:59:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:59:55,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015543526] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:59:55,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:59:55,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-12-02 12:59:55,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530440936] [2024-12-02 12:59:55,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:59:55,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 12:59:55,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:55,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 12:59:55,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2024-12-02 12:59:56,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-12-02 12:59:56,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 144 transitions, 1188 flow. Second operand has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:59:56,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:59:56,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-12-02 12:59:56,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:00:08,947 INFO L124 PetriNetUnfolderBase]: 57164/81720 cut-off events. [2024-12-02 13:00:08,948 INFO L125 PetriNetUnfolderBase]: For 510626/511720 co-relation queries the response was YES. [2024-12-02 13:00:09,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404055 conditions, 81720 events. 57164/81720 cut-off events. For 510626/511720 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 595367 event pairs, 17900 based on Foata normal form. 743/79802 useless extension candidates. Maximal degree in co-relation 404015. Up to 23780 conditions per place. [2024-12-02 13:00:09,715 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 477 selfloop transitions, 49 changer transitions 0/545 dead transitions. [2024-12-02 13:00:09,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 545 transitions, 5785 flow [2024-12-02 13:00:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 13:00:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-12-02 13:00:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 596 transitions. [2024-12-02 13:00:09,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4167832167832168 [2024-12-02 13:00:09,716 INFO L175 Difference]: Start difference. First operand has 177 places, 144 transitions, 1188 flow. Second operand 22 states and 596 transitions. [2024-12-02 13:00:09,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 545 transitions, 5785 flow [2024-12-02 13:00:12,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 545 transitions, 5501 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-12-02 13:00:12,775 INFO L231 Difference]: Finished difference. Result has 189 places, 148 transitions, 1265 flow [2024-12-02 13:00:12,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1265, PETRI_PLACES=189, PETRI_TRANSITIONS=148} [2024-12-02 13:00:12,775 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 123 predicate places. [2024-12-02 13:00:12,775 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 148 transitions, 1265 flow [2024-12-02 13:00:12,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:00:12,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:00:12,776 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:00:12,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 13:00:12,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 13:00:12,976 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-12-02 13:00:12,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:00:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1836545957, now seen corresponding path program 2 times [2024-12-02 13:00:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:00:12,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957930372] [2024-12-02 13:00:12,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:00:12,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:00:12,986 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:00:12,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:00:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:00:13,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:00:13,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957930372] [2024-12-02 13:00:13,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957930372] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:00:13,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037098456] [2024-12-02 13:00:13,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:00:13,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:00:13,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:00:13,250 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:00:13,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5affd97-a409-4fe7-851b-aa1d34171846/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 13:00:13,344 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:00:13,344 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:00:13,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 13:00:13,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:00:13,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-12-02 13:00:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:00:13,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:00:14,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 13:00:14,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-12-02 13:00:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:00:14,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037098456] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:00:14,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:00:14,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-12-02 13:00:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660691777] [2024-12-02 13:00:14,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:00:14,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 13:00:14,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:14,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 13:00:14,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2024-12-02 13:00:14,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-12-02 13:00:14,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 148 transitions, 1265 flow. Second operand has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:00:14,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:00:14,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-12-02 13:00:14,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand