./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC --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 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:34:17,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:34:17,303 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 01:34:17,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:34:17,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:34:17,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:34:17,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:34:17,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:34:17,355 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:34:17,355 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:34:17,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:34:17,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:34:17,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:34:17,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:34:17,358 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:34:17,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:34:17,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:34:17,359 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:34:17,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:34:17,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:34:17,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:34:17,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:34:17,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:34:17,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:34:17,360 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:34:17,360 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:34:17,360 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:34:17,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:34:17,360 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:34:17,360 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:34:17,360 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:34:17,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:34:17,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:34:17,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:34:17,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:34:17,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:34:17,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:34:17,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:34:17,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:34:17,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:34:17,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:34:17,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:34:17,362 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:34:17,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:34:17,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:34:17,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:34:17,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:34:17,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:34:17,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:34:17,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:34:17,364 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_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC 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 -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2024-11-24 01:34:17,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:34:17,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:34:17,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:34:17,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:34:17,735 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:34:17,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-24 01:34:20,740 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/data/7809076af/b59d5ec8c9fe4920814cddd2f4e8eec7/FLAGd5dcfffe0 [2024-11-24 01:34:21,073 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:34:21,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-24 01:34:21,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/data/7809076af/b59d5ec8c9fe4920814cddd2f4e8eec7/FLAGd5dcfffe0 [2024-11-24 01:34:21,160 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/data/7809076af/b59d5ec8c9fe4920814cddd2f4e8eec7 [2024-11-24 01:34:21,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:34:21,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:34:21,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:34:21,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:34:21,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:34:21,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7feb6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21, skipping insertion in model container [2024-11-24 01:34:21,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:34:21,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:34:21,459 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:34:21,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:34:21,518 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:34:21,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21 WrapperNode [2024-11-24 01:34:21,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:34:21,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:34:21,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:34:21,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:34:21,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,567 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 343 [2024-11-24 01:34:21,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:34:21,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:34:21,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:34:21,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:34:21,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,609 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-24 01:34:21,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,621 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,627 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:34:21,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:34:21,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:34:21,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:34:21,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (1/1) ... [2024-11-24 01:34:21,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:34:21,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:21,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:34:21,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:34:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:34:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 01:34:21,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 01:34:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 01:34:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 01:34:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 01:34:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 01:34:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:34:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:34:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:34:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:34:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:34:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:34:21,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:34:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:34:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:34:21,728 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:34:21,850 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:34:21,852 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:34:22,506 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:34:22,507 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:34:22,870 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:34:22,872 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-24 01:34:22,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:34:22 BoogieIcfgContainer [2024-11-24 01:34:22,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:34:22,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:34:22,875 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:34:22,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:34:22,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:34:21" (1/3) ... [2024-11-24 01:34:22,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75784339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:34:22, skipping insertion in model container [2024-11-24 01:34:22,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:34:21" (2/3) ... [2024-11-24 01:34:22,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75784339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:34:22, skipping insertion in model container [2024-11-24 01:34:22,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:34:22" (3/3) ... [2024-11-24 01:34:22,883 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2024-11-24 01:34:22,900 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:34:22,901 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-three-array-sum-alt.wvr.c that has 4 procedures, 128 locations, 1 initial locations, 6 loop locations, and 42 error locations. [2024-11-24 01:34:22,902 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:34:23,052 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-24 01:34:23,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 143 transitions, 307 flow [2024-11-24 01:34:23,191 INFO L124 PetriNetUnfolderBase]: 16/140 cut-off events. [2024-11-24 01:34:23,194 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 01:34:23,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 140 events. 16/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 492 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-11-24 01:34:23,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 143 transitions, 307 flow [2024-11-24 01:34:23,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 296 flow [2024-11-24 01:34:23,225 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:34:23,241 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;@5acea28d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:34:23,241 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-24 01:34:23,246 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:34:23,246 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 01:34:23,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:34:23,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:23,247 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 01:34:23,248 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:23,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1090215, now seen corresponding path program 1 times [2024-11-24 01:34:23,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:23,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552243114] [2024-11-24 01:34:23,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:23,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:23,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:23,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552243114] [2024-11-24 01:34:23,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552243114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:23,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:23,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:34:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005246148] [2024-11-24 01:34:23,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:23,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:23,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:23,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:23,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:23,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-24 01:34:23,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:23,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:23,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-24 01:34:23,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:25,743 INFO L124 PetriNetUnfolderBase]: 6055/13029 cut-off events. [2024-11-24 01:34:25,746 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-24 01:34:25,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21257 conditions, 13029 events. 6055/13029 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 121912 event pairs, 3963 based on Foata normal form. 3/10327 useless extension candidates. Maximal degree in co-relation 20186. Up to 7969 conditions per place. [2024-11-24 01:34:25,869 INFO L140 encePairwiseOnDemand]: 127/143 looper letters, 61 selfloop transitions, 10 changer transitions 0/148 dead transitions. [2024-11-24 01:34:25,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 148 transitions, 456 flow [2024-11-24 01:34:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:34:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2024-11-24 01:34:25,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6940559440559441 [2024-11-24 01:34:25,892 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 296 flow. Second operand 4 states and 397 transitions. [2024-11-24 01:34:25,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 148 transitions, 456 flow [2024-11-24 01:34:25,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 148 transitions, 444 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-24 01:34:25,923 INFO L231 Difference]: Finished difference. Result has 133 places, 148 transitions, 372 flow [2024-11-24 01:34:25,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=133, PETRI_TRANSITIONS=148} [2024-11-24 01:34:25,932 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 0 predicate places. [2024-11-24 01:34:25,933 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 148 transitions, 372 flow [2024-11-24 01:34:25,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:25,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:25,934 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 01:34:25,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:34:25,934 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:25,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:25,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1879958910, now seen corresponding path program 1 times [2024-11-24 01:34:25,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:25,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883973139] [2024-11-24 01:34:25,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:25,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:26,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883973139] [2024-11-24 01:34:26,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883973139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765254137] [2024-11-24 01:34:26,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:26,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:26,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:26,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:34:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:26,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:34:26,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:26,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:34:26,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765254137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:26,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:34:26,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:34:26,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684192971] [2024-11-24 01:34:26,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:26,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:34:26,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:26,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:34:26,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:34:26,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-24 01:34:26,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 148 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:26,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:26,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-24 01:34:26,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:28,223 INFO L124 PetriNetUnfolderBase]: 6055/13026 cut-off events. [2024-11-24 01:34:28,223 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-24 01:34:28,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21107 conditions, 13026 events. 6055/13026 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 121905 event pairs, 3963 based on Foata normal form. 3/10329 useless extension candidates. Maximal degree in co-relation 21034. Up to 7954 conditions per place. [2024-11-24 01:34:28,328 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 51 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2024-11-24 01:34:28,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 145 transitions, 496 flow [2024-11-24 01:34:28,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:34:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:34:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2024-11-24 01:34:28,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6421911421911422 [2024-11-24 01:34:28,337 INFO L175 Difference]: Start difference. First operand has 133 places, 148 transitions, 372 flow. Second operand 6 states and 551 transitions. [2024-11-24 01:34:28,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 145 transitions, 496 flow [2024-11-24 01:34:28,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:34:28,340 INFO L231 Difference]: Finished difference. Result has 135 places, 145 transitions, 394 flow [2024-11-24 01:34:28,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=135, PETRI_TRANSITIONS=145} [2024-11-24 01:34:28,343 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2024-11-24 01:34:28,344 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 145 transitions, 394 flow [2024-11-24 01:34:28,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:28,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:28,346 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 01:34:28,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:34:28,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:28,550 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:28,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:28,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1850817130, now seen corresponding path program 1 times [2024-11-24 01:34:28,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:28,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468823960] [2024-11-24 01:34:28,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:28,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:28,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468823960] [2024-11-24 01:34:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468823960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844216994] [2024-11-24 01:34:28,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:28,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:28,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:28,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:34:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:28,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:34:28,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:28,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:34:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844216994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:34:28,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:34:28,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-24 01:34:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872234485] [2024-11-24 01:34:28,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:34:28,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:34:28,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:28,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:34:28,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:34:29,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-24 01:34:29,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 145 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:29,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:29,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-24 01:34:29,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:30,582 INFO L124 PetriNetUnfolderBase]: 6064/13062 cut-off events. [2024-11-24 01:34:30,582 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-11-24 01:34:30,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21248 conditions, 13062 events. 6064/13062 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 122187 event pairs, 3963 based on Foata normal form. 9/10371 useless extension candidates. Maximal degree in co-relation 21036. Up to 7969 conditions per place. [2024-11-24 01:34:30,675 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 58 selfloop transitions, 37 changer transitions 0/172 dead transitions. [2024-11-24 01:34:30,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 172 transitions, 758 flow [2024-11-24 01:34:30,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:34:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 01:34:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 904 transitions. [2024-11-24 01:34:30,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6321678321678321 [2024-11-24 01:34:30,679 INFO L175 Difference]: Start difference. First operand has 135 places, 145 transitions, 394 flow. Second operand 10 states and 904 transitions. [2024-11-24 01:34:30,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 172 transitions, 758 flow [2024-11-24 01:34:30,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 172 transitions, 675 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-24 01:34:30,684 INFO L231 Difference]: Finished difference. Result has 142 places, 172 transitions, 609 flow [2024-11-24 01:34:30,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=142, PETRI_TRANSITIONS=172} [2024-11-24 01:34:30,685 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 9 predicate places. [2024-11-24 01:34:30,685 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 172 transitions, 609 flow [2024-11-24 01:34:30,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:30,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:30,686 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:30,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:34:30,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-24 01:34:30,887 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:30,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash -964458820, now seen corresponding path program 1 times [2024-11-24 01:34:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:30,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162951970] [2024-11-24 01:34:30,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:30,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:30,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162951970] [2024-11-24 01:34:30,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162951970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:30,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:30,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:34:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359246947] [2024-11-24 01:34:30,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:30,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:30,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:30,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:30,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:31,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-24 01:34:31,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 172 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:31,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:31,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-24 01:34:31,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:32,971 INFO L124 PetriNetUnfolderBase]: 12144/21922 cut-off events. [2024-11-24 01:34:32,972 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2024-11-24 01:34:33,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38263 conditions, 21922 events. 12144/21922 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 190210 event pairs, 3907 based on Foata normal form. 544/18448 useless extension candidates. Maximal degree in co-relation 38165. Up to 7365 conditions per place. [2024-11-24 01:34:33,131 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 152 selfloop transitions, 5 changer transitions 0/231 dead transitions. [2024-11-24 01:34:33,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 231 transitions, 1045 flow [2024-11-24 01:34:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:34:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-11-24 01:34:33,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7762237762237763 [2024-11-24 01:34:33,134 INFO L175 Difference]: Start difference. First operand has 142 places, 172 transitions, 609 flow. Second operand 4 states and 444 transitions. [2024-11-24 01:34:33,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 231 transitions, 1045 flow [2024-11-24 01:34:33,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 231 transitions, 1008 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-24 01:34:33,142 INFO L231 Difference]: Finished difference. Result has 145 places, 174 transitions, 606 flow [2024-11-24 01:34:33,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=606, PETRI_PLACES=145, PETRI_TRANSITIONS=174} [2024-11-24 01:34:33,145 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 12 predicate places. [2024-11-24 01:34:33,145 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 174 transitions, 606 flow [2024-11-24 01:34:33,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:33,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:33,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:33,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:34:33,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:33,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:33,148 INFO L85 PathProgramCache]: Analyzing trace with hash 166548862, now seen corresponding path program 1 times [2024-11-24 01:34:33,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:33,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419646849] [2024-11-24 01:34:33,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:33,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:33,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419646849] [2024-11-24 01:34:33,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419646849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:33,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:33,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:34:33,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972121921] [2024-11-24 01:34:33,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:33,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:34:33,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:33,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:34:33,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:34:33,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-11-24 01:34:33,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 174 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:33,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:33,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-11-24 01:34:33,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:35,415 INFO L124 PetriNetUnfolderBase]: 9777/20650 cut-off events. [2024-11-24 01:34:35,416 INFO L125 PetriNetUnfolderBase]: For 3274/3652 co-relation queries the response was YES. [2024-11-24 01:34:35,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36168 conditions, 20650 events. 9777/20650 cut-off events. For 3274/3652 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 199102 event pairs, 6022 based on Foata normal form. 463/17418 useless extension candidates. Maximal degree in co-relation 36015. Up to 10134 conditions per place. [2024-11-24 01:34:35,539 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 167 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2024-11-24 01:34:35,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 271 transitions, 1319 flow [2024-11-24 01:34:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:34:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:34:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2024-11-24 01:34:35,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7703962703962703 [2024-11-24 01:34:35,542 INFO L175 Difference]: Start difference. First operand has 145 places, 174 transitions, 606 flow. Second operand 6 states and 661 transitions. [2024-11-24 01:34:35,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 271 transitions, 1319 flow [2024-11-24 01:34:35,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 271 transitions, 1319 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:34:35,582 INFO L231 Difference]: Finished difference. Result has 153 places, 184 transitions, 740 flow [2024-11-24 01:34:35,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=153, PETRI_TRANSITIONS=184} [2024-11-24 01:34:35,583 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 20 predicate places. [2024-11-24 01:34:35,583 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 184 transitions, 740 flow [2024-11-24 01:34:35,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:35,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:35,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:35,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:34:35,584 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:35,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1017136797, now seen corresponding path program 1 times [2024-11-24 01:34:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703190318] [2024-11-24 01:34:35,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:35,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:35,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703190318] [2024-11-24 01:34:35,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703190318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:35,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:35,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:34:35,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277666593] [2024-11-24 01:34:35,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:35,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:35,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:35,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:35,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:35,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-24 01:34:35,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 184 transitions, 740 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 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) [2024-11-24 01:34:35,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:35,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-24 01:34:35,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:38,802 INFO L124 PetriNetUnfolderBase]: 20150/36696 cut-off events. [2024-11-24 01:34:38,802 INFO L125 PetriNetUnfolderBase]: For 10357/10717 co-relation queries the response was YES. [2024-11-24 01:34:38,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72669 conditions, 36696 events. 20150/36696 cut-off events. For 10357/10717 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 335847 event pairs, 6792 based on Foata normal form. 1106/32518 useless extension candidates. Maximal degree in co-relation 72508. Up to 12843 conditions per place. [2024-11-24 01:34:39,000 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 170 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2024-11-24 01:34:39,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 249 transitions, 1288 flow [2024-11-24 01:34:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:34:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2024-11-24 01:34:39,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-24 01:34:39,001 INFO L175 Difference]: Start difference. First operand has 153 places, 184 transitions, 740 flow. Second operand 4 states and 442 transitions. [2024-11-24 01:34:39,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 249 transitions, 1288 flow [2024-11-24 01:34:39,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 249 transitions, 1284 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-24 01:34:39,127 INFO L231 Difference]: Finished difference. Result has 158 places, 186 transitions, 770 flow [2024-11-24 01:34:39,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=770, PETRI_PLACES=158, PETRI_TRANSITIONS=186} [2024-11-24 01:34:39,127 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 25 predicate places. [2024-11-24 01:34:39,127 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 186 transitions, 770 flow [2024-11-24 01:34:39,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 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) [2024-11-24 01:34:39,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:39,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:39,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:34:39,128 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:39,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1466468400, now seen corresponding path program 1 times [2024-11-24 01:34:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:39,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939727384] [2024-11-24 01:34:39,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:39,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:39,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:39,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939727384] [2024-11-24 01:34:39,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939727384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:39,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:39,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:34:39,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438024554] [2024-11-24 01:34:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:39,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:34:39,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:39,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:34:39,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:34:39,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-11-24 01:34:39,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 186 transitions, 770 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:39,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:39,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-11-24 01:34:39,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:41,385 INFO L124 PetriNetUnfolderBase]: 9912/21860 cut-off events. [2024-11-24 01:34:41,385 INFO L125 PetriNetUnfolderBase]: For 8597/9542 co-relation queries the response was YES. [2024-11-24 01:34:41,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41761 conditions, 21860 events. 9912/21860 cut-off events. For 8597/9542 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 221589 event pairs, 6639 based on Foata normal form. 588/18840 useless extension candidates. Maximal degree in co-relation 41597. Up to 12335 conditions per place. [2024-11-24 01:34:41,522 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 154 selfloop transitions, 24 changer transitions 0/258 dead transitions. [2024-11-24 01:34:41,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 258 transitions, 1384 flow [2024-11-24 01:34:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:34:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:34:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2024-11-24 01:34:41,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.752913752913753 [2024-11-24 01:34:41,524 INFO L175 Difference]: Start difference. First operand has 158 places, 186 transitions, 770 flow. Second operand 6 states and 646 transitions. [2024-11-24 01:34:41,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 258 transitions, 1384 flow [2024-11-24 01:34:41,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 1384 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:34:41,551 INFO L231 Difference]: Finished difference. Result has 165 places, 188 transitions, 840 flow [2024-11-24 01:34:41,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=165, PETRI_TRANSITIONS=188} [2024-11-24 01:34:41,551 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 32 predicate places. [2024-11-24 01:34:41,552 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 188 transitions, 840 flow [2024-11-24 01:34:41,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:41,552 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:41,552 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:41,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:34:41,553 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:41,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1015350132, now seen corresponding path program 1 times [2024-11-24 01:34:41,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:41,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592502968] [2024-11-24 01:34:41,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:41,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:41,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:41,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592502968] [2024-11-24 01:34:41,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592502968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:41,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:41,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:34:41,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63948638] [2024-11-24 01:34:41,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:41,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:41,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:41,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:41,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:41,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2024-11-24 01:34:41,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 188 transitions, 840 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:41,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:41,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2024-11-24 01:34:41,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:45,681 INFO L124 PetriNetUnfolderBase]: 22898/41978 cut-off events. [2024-11-24 01:34:45,682 INFO L125 PetriNetUnfolderBase]: For 23546/25319 co-relation queries the response was YES. [2024-11-24 01:34:46,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91427 conditions, 41978 events. 22898/41978 cut-off events. For 23546/25319 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 398259 event pairs, 7161 based on Foata normal form. 2063/38697 useless extension candidates. Maximal degree in co-relation 91256. Up to 13115 conditions per place. [2024-11-24 01:34:46,134 INFO L140 encePairwiseOnDemand]: 128/143 looper letters, 174 selfloop transitions, 10 changer transitions 0/252 dead transitions. [2024-11-24 01:34:46,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 252 transitions, 1468 flow [2024-11-24 01:34:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:34:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2024-11-24 01:34:46,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2024-11-24 01:34:46,136 INFO L175 Difference]: Start difference. First operand has 165 places, 188 transitions, 840 flow. Second operand 4 states and 418 transitions. [2024-11-24 01:34:46,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 252 transitions, 1468 flow [2024-11-24 01:34:46,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 252 transitions, 1432 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 01:34:46,352 INFO L231 Difference]: Finished difference. Result has 166 places, 192 transitions, 870 flow [2024-11-24 01:34:46,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=870, PETRI_PLACES=166, PETRI_TRANSITIONS=192} [2024-11-24 01:34:46,353 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 33 predicate places. [2024-11-24 01:34:46,353 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 192 transitions, 870 flow [2024-11-24 01:34:46,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:46,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:46,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:46,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:34:46,354 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:46,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1411081760, now seen corresponding path program 1 times [2024-11-24 01:34:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143161925] [2024-11-24 01:34:46,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:46,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:46,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143161925] [2024-11-24 01:34:46,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143161925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:46,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:46,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:34:46,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429939862] [2024-11-24 01:34:46,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:46,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:34:46,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:46,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:34:46,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:34:46,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-11-24 01:34:46,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 192 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:46,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:46,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-11-24 01:34:46,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:49,378 INFO L124 PetriNetUnfolderBase]: 13897/29780 cut-off events. [2024-11-24 01:34:49,378 INFO L125 PetriNetUnfolderBase]: For 19589/21181 co-relation queries the response was YES. [2024-11-24 01:34:49,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65058 conditions, 29780 events. 13897/29780 cut-off events. For 19589/21181 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 314572 event pairs, 9776 based on Foata normal form. 847/27378 useless extension candidates. Maximal degree in co-relation 64888. Up to 17787 conditions per place. [2024-11-24 01:34:49,638 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 133 selfloop transitions, 24 changer transitions 0/237 dead transitions. [2024-11-24 01:34:49,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 237 transitions, 1396 flow [2024-11-24 01:34:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:34:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:34:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 621 transitions. [2024-11-24 01:34:49,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7237762237762237 [2024-11-24 01:34:49,641 INFO L175 Difference]: Start difference. First operand has 166 places, 192 transitions, 870 flow. Second operand 6 states and 621 transitions. [2024-11-24 01:34:49,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 237 transitions, 1396 flow [2024-11-24 01:34:49,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 237 transitions, 1396 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:34:49,970 INFO L231 Difference]: Finished difference. Result has 173 places, 194 transitions, 940 flow [2024-11-24 01:34:49,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=940, PETRI_PLACES=173, PETRI_TRANSITIONS=194} [2024-11-24 01:34:49,971 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 40 predicate places. [2024-11-24 01:34:49,971 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 194 transitions, 940 flow [2024-11-24 01:34:49,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:49,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:49,971 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-24 01:34:49,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:34:49,971 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:49,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash -494470491, now seen corresponding path program 2 times [2024-11-24 01:34:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:49,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499146936] [2024-11-24 01:34:49,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:34:49,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:49,989 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:34:49,989 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:34:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 01:34:50,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499146936] [2024-11-24 01:34:50,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499146936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589719648] [2024-11-24 01:34:50,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:34:50,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:50,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:50,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:50,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:34:50,131 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:34:50,131 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:34:50,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:34:50,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 01:34:50,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:34:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 01:34:50,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589719648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:34:50,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:34:50,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-24 01:34:50,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954989305] [2024-11-24 01:34:50,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:34:50,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:50,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:50,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:50,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:50,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-24 01:34:50,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 194 transitions, 940 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:50,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:50,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-24 01:34:50,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:53,345 INFO L124 PetriNetUnfolderBase]: 13980/30830 cut-off events. [2024-11-24 01:34:53,345 INFO L125 PetriNetUnfolderBase]: For 20598/22157 co-relation queries the response was YES. [2024-11-24 01:34:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67250 conditions, 30830 events. 13980/30830 cut-off events. For 20598/22157 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 334226 event pairs, 9883 based on Foata normal form. 822/27899 useless extension candidates. Maximal degree in co-relation 67074. Up to 18186 conditions per place. [2024-11-24 01:34:53,621 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 100 selfloop transitions, 16 changer transitions 0/193 dead transitions. [2024-11-24 01:34:53,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 193 transitions, 1162 flow [2024-11-24 01:34:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:34:53,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2024-11-24 01:34:53,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6625874125874126 [2024-11-24 01:34:53,623 INFO L175 Difference]: Start difference. First operand has 173 places, 194 transitions, 940 flow. Second operand 4 states and 379 transitions. [2024-11-24 01:34:53,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 193 transitions, 1162 flow [2024-11-24 01:34:54,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 193 transitions, 1126 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 01:34:54,105 INFO L231 Difference]: Finished difference. Result has 172 places, 193 transitions, 926 flow [2024-11-24 01:34:54,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=926, PETRI_PLACES=172, PETRI_TRANSITIONS=193} [2024-11-24 01:34:54,106 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 39 predicate places. [2024-11-24 01:34:54,106 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 193 transitions, 926 flow [2024-11-24 01:34:54,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:54,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:54,106 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-24 01:34:54,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:34:54,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:34:54,307 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:54,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:54,308 INFO L85 PathProgramCache]: Analyzing trace with hash -774382694, now seen corresponding path program 1 times [2024-11-24 01:34:54,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:54,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130001766] [2024-11-24 01:34:54,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:54,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:34:54,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:54,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130001766] [2024-11-24 01:34:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130001766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:54,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:54,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:34:54,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736914085] [2024-11-24 01:34:54,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:54,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:54,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:54,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:54,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:54,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-11-24 01:34:54,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 193 transitions, 926 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:54,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:34:54,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-11-24 01:34:54,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:34:57,601 INFO L124 PetriNetUnfolderBase]: 13970/30790 cut-off events. [2024-11-24 01:34:57,601 INFO L125 PetriNetUnfolderBase]: For 20453/22012 co-relation queries the response was YES. [2024-11-24 01:34:57,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67086 conditions, 30790 events. 13970/30790 cut-off events. For 20453/22012 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 334066 event pairs, 9883 based on Foata normal form. 823/27861 useless extension candidates. Maximal degree in co-relation 66973. Up to 18150 conditions per place. [2024-11-24 01:34:57,828 INFO L140 encePairwiseOnDemand]: 134/143 looper letters, 92 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2024-11-24 01:34:57,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 187 transitions, 1062 flow [2024-11-24 01:34:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:34:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 413 transitions. [2024-11-24 01:34:57,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.722027972027972 [2024-11-24 01:34:57,830 INFO L175 Difference]: Start difference. First operand has 172 places, 193 transitions, 926 flow. Second operand 4 states and 413 transitions. [2024-11-24 01:34:57,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 187 transitions, 1062 flow [2024-11-24 01:34:58,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 1018 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-24 01:34:58,071 INFO L231 Difference]: Finished difference. Result has 172 places, 187 transitions, 841 flow [2024-11-24 01:34:58,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=841, PETRI_PLACES=172, PETRI_TRANSITIONS=187} [2024-11-24 01:34:58,072 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 39 predicate places. [2024-11-24 01:34:58,072 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 187 transitions, 841 flow [2024-11-24 01:34:58,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:58,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:34:58,073 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:58,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:34:58,073 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:34:58,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:58,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1949465098, now seen corresponding path program 1 times [2024-11-24 01:34:58,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812378591] [2024-11-24 01:34:58,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:59,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812378591] [2024-11-24 01:34:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812378591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915457957] [2024-11-24 01:34:59,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:59,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:59,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:59,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:59,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:34:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:59,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 01:34:59,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:59,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-24 01:34:59,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 01:34:59,311 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-24 01:34:59,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-24 01:34:59,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:34:59,408 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 01:34:59,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-24 01:34:59,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:34:59,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-24 01:34:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:34:59,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:00,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:00,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-11-24 01:35:00,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:00,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2024-11-24 01:35:00,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-24 01:35:00,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-24 01:35:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915457957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:00,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 24 [2024-11-24 01:35:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949451866] [2024-11-24 01:35:00,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:00,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:35:00,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:00,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:35:00,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=542, Unknown=4, NotChecked=0, Total=650 [2024-11-24 01:35:00,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 143 [2024-11-24 01:35:00,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 187 transitions, 841 flow. Second operand has 26 states, 26 states have (on average 78.65384615384616) internal successors, (2045), 26 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:00,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:35:00,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 143 [2024-11-24 01:35:00,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:35:11,786 INFO L124 PetriNetUnfolderBase]: 59454/91761 cut-off events. [2024-11-24 01:35:11,786 INFO L125 PetriNetUnfolderBase]: For 71579/78893 co-relation queries the response was YES. [2024-11-24 01:35:12,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230838 conditions, 91761 events. 59454/91761 cut-off events. For 71579/78893 co-relation queries the response was YES. Maximal size of possible extension queue 2776. Compared 767784 event pairs, 12789 based on Foata normal form. 3751/88986 useless extension candidates. Maximal degree in co-relation 230728. Up to 28504 conditions per place. [2024-11-24 01:35:12,731 INFO L140 encePairwiseOnDemand]: 124/143 looper letters, 271 selfloop transitions, 35 changer transitions 0/376 dead transitions. [2024-11-24 01:35:12,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 376 transitions, 2186 flow [2024-11-24 01:35:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:35:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-24 01:35:12,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1237 transitions. [2024-11-24 01:35:12,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6654115115653577 [2024-11-24 01:35:12,735 INFO L175 Difference]: Start difference. First operand has 172 places, 187 transitions, 841 flow. Second operand 13 states and 1237 transitions. [2024-11-24 01:35:12,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 376 transitions, 2186 flow [2024-11-24 01:35:13,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 376 transitions, 2152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 01:35:13,191 INFO L231 Difference]: Finished difference. Result has 184 places, 199 transitions, 989 flow [2024-11-24 01:35:13,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=989, PETRI_PLACES=184, PETRI_TRANSITIONS=199} [2024-11-24 01:35:13,193 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 51 predicate places. [2024-11-24 01:35:13,193 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 199 transitions, 989 flow [2024-11-24 01:35:13,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.65384615384616) internal successors, (2045), 26 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:13,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:35:13,194 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:13,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:35:13,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:13,394 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-24 01:35:13,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:13,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1628502069, now seen corresponding path program 1 times [2024-11-24 01:35:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:13,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313760260] [2024-11-24 01:35:13,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 01:35:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:13,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313760260] [2024-11-24 01:35:13,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313760260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:13,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681042900] [2024-11-24 01:35:13,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:13,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:13,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:13,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df51e53b-ba03-4167-a5c5-699c1788c213/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:35:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:13,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 01:35:13,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:35:13,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:35:13,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681042900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:13,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:13,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-11-24 01:35:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264347772] [2024-11-24 01:35:13,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:13,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:35:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:13,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:35:13,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:35:14,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-24 01:35:14,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 199 transitions, 989 flow. Second operand has 21 states, 21 states have (on average 81.28571428571429) internal successors, (1707), 21 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:14,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:35:14,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-24 01:35:14,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand