./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:28:26,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:28:26,413 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:28:26,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:28:26,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:28:26,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:28:26,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:28:26,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:28:26,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:28:26,465 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:28:26,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:28:26,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:28:26,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:28:26,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:28:26,466 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:28:26,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:28:26,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:28:26,467 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:28:26,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:28:26,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:28:26,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:28:26,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:28:26,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:28:26,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:28:26,469 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:28:26,469 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:28:26,470 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:28:26,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:28:26,470 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:28:26,470 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:28:26,470 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:28:26,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:28:26,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:28:26,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:28:26,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:28:26,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:28:26,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:28:26,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:28:26,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:28:26,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:28:26,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:28:26,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:28:26,472 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_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-11-28 02:28:26,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:28:26,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:28:26,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:28:26,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:28:26,799 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:28:26,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-28 02:28:29,781 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/data/a660375b5/05b90371eaf44a1abb61ea423315d70e/FLAGff6d8a360 [2024-11-28 02:28:30,110 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:28:30,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-28 02:28:30,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/data/a660375b5/05b90371eaf44a1abb61ea423315d70e/FLAGff6d8a360 [2024-11-28 02:28:30,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/data/a660375b5/05b90371eaf44a1abb61ea423315d70e [2024-11-28 02:28:30,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:28:30,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:28:30,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:28:30,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:28:30,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:28:30,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9638bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30, skipping insertion in model container [2024-11-28 02:28:30,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,200 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:28:30,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:28:30,407 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:28:30,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:28:30,445 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:28:30,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30 WrapperNode [2024-11-28 02:28:30,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:28:30,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:28:30,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:28:30,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:28:30,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,485 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 231 [2024-11-28 02:28:30,485 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:28:30,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:28:30,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:28:30,486 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:28:30,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,512 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 02:28:30,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,520 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:28:30,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:28:30,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:28:30,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:28:30,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (1/1) ... [2024-11-28 02:28:30,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:28:30,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:30,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:28:30,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:28:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:28:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:28:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:28:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:28:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:28:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:28:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:28:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:28:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:28:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:28:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:28:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:28:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:28:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:28:30,615 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:28:30,710 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:28:30,712 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:28:31,235 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:28:31,236 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:28:31,534 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:28:31,534 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:28:31,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:28:31 BoogieIcfgContainer [2024-11-28 02:28:31,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:28:31,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:28:31,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:28:31,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:28:31,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:28:30" (1/3) ... [2024-11-28 02:28:31,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cbd612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:28:31, skipping insertion in model container [2024-11-28 02:28:31,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:28:30" (2/3) ... [2024-11-28 02:28:31,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cbd612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:28:31, skipping insertion in model container [2024-11-28 02:28:31,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:28:31" (3/3) ... [2024-11-28 02:28:31,547 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-11-28 02:28:31,562 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:28:31,564 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-symm.wvr.c that has 3 procedures, 77 locations, 1 initial locations, 4 loop locations, and 24 error locations. [2024-11-28 02:28:31,564 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:28:31,655 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:28:31,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-11-28 02:28:31,758 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-11-28 02:28:31,761 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:28:31,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 280 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-28 02:28:31,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-11-28 02:28:31,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 173 flow [2024-11-28 02:28:31,786 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:28:31,804 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;@4b10cd97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:28:31,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-28 02:28:31,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:28:31,808 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 02:28:31,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:28:31,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:31,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:28:31,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:31,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash 733884, now seen corresponding path program 1 times [2024-11-28 02:28:31,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:31,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614095320] [2024-11-28 02:28:31,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:31,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614095320] [2024-11-28 02:28:32,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614095320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:32,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:32,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:28:32,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150955433] [2024-11-28 02:28:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:32,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:32,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:32,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:32,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:28:32,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-28 02:28:32,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:32,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:32,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-28 02:28:32,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:32,590 INFO L124 PetriNetUnfolderBase]: 512/1308 cut-off events. [2024-11-28 02:28:32,590 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-28 02:28:32,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 1308 events. 512/1308 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9008 event pairs, 322 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 2035. Up to 772 conditions per place. [2024-11-28 02:28:32,605 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 34 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-28 02:28:32,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 249 flow [2024-11-28 02:28:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:28:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-28 02:28:32,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-11-28 02:28:32,622 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 173 flow. Second operand 4 states and 210 transitions. [2024-11-28 02:28:32,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 249 flow [2024-11-28 02:28:32,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:28:32,631 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 176 flow [2024-11-28 02:28:32,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-11-28 02:28:32,638 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-11-28 02:28:32,638 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 176 flow [2024-11-28 02:28:32,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:32,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:32,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 02:28:32,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:28:32,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:32,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash 22751134, now seen corresponding path program 1 times [2024-11-28 02:28:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:32,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952312503] [2024-11-28 02:28:32,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:32,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952312503] [2024-11-28 02:28:32,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952312503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:32,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:32,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:28:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308411726] [2024-11-28 02:28:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:32,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:32,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:32,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:32,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:28:32,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-28 02:28:32,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:32,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:32,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-28 02:28:32,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:33,104 INFO L124 PetriNetUnfolderBase]: 514/1316 cut-off events. [2024-11-28 02:28:33,105 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 02:28:33,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2136 conditions, 1316 events. 514/1316 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9030 event pairs, 322 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 2088. Up to 781 conditions per place. [2024-11-28 02:28:33,119 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-11-28 02:28:33,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 290 flow [2024-11-28 02:28:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:28:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-28 02:28:33,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-28 02:28:33,122 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 176 flow. Second operand 4 states and 216 transitions. [2024-11-28 02:28:33,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 290 flow [2024-11-28 02:28:33,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:28:33,129 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 220 flow [2024-11-28 02:28:33,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-11-28 02:28:33,131 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-11-28 02:28:33,131 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 220 flow [2024-11-28 02:28:33,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:33,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:33,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:28:33,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:28:33,133 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:33,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 389320496, now seen corresponding path program 1 times [2024-11-28 02:28:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:33,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434072861] [2024-11-28 02:28:33,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:33,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434072861] [2024-11-28 02:28:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434072861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:33,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:33,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96795042] [2024-11-28 02:28:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:33,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:28:33,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:33,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:28:33,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:33,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-28 02:28:33,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:33,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:33,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-28 02:28:33,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:34,201 INFO L124 PetriNetUnfolderBase]: 1224/3018 cut-off events. [2024-11-28 02:28:34,201 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-28 02:28:34,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4939 conditions, 3018 events. 1224/3018 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 24399 event pairs, 768 based on Foata normal form. 24/2283 useless extension candidates. Maximal degree in co-relation 2501. Up to 943 conditions per place. [2024-11-28 02:28:34,229 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2024-11-28 02:28:34,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 452 flow [2024-11-28 02:28:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:28:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:28:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-11-28 02:28:34,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-11-28 02:28:34,232 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 220 flow. Second operand 5 states and 290 transitions. [2024-11-28 02:28:34,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 452 flow [2024-11-28 02:28:34,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:28:34,235 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 253 flow [2024-11-28 02:28:34,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-11-28 02:28:34,236 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2024-11-28 02:28:34,236 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 253 flow [2024-11-28 02:28:34,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:34,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:34,237 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 02:28:34,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:28:34,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:34,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash -825034398, now seen corresponding path program 1 times [2024-11-28 02:28:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220255663] [2024-11-28 02:28:34,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:34,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:34,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:34,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220255663] [2024-11-28 02:28:34,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220255663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:34,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251428857] [2024-11-28 02:28:34,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:34,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:34,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:34,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:34,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:28:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:34,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:28:34,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:34,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:34,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251428857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:34,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:34,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-28 02:28:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183612880] [2024-11-28 02:28:34,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:34,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:28:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:34,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:28:34,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:28:34,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-28 02:28:34,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:34,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:34,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-28 02:28:34,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:35,192 INFO L124 PetriNetUnfolderBase]: 1036/2638 cut-off events. [2024-11-28 02:28:35,192 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-28 02:28:35,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 2638 events. 1036/2638 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20971 event pairs, 646 based on Foata normal form. 0/1978 useless extension candidates. Maximal degree in co-relation 2201. Up to 1554 conditions per place. [2024-11-28 02:28:35,213 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-11-28 02:28:35,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 465 flow [2024-11-28 02:28:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:28:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:28:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 490 transitions. [2024-11-28 02:28:35,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-28 02:28:35,217 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 253 flow. Second operand 10 states and 490 transitions. [2024-11-28 02:28:35,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 465 flow [2024-11-28 02:28:35,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:28:35,222 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 415 flow [2024-11-28 02:28:35,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-11-28 02:28:35,223 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-11-28 02:28:35,223 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 415 flow [2024-11-28 02:28:35,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:35,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:35,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:35,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:28:35,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:35,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:35,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash -815965725, now seen corresponding path program 1 times [2024-11-28 02:28:35,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:35,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950086931] [2024-11-28 02:28:35,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:35,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:35,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:35,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950086931] [2024-11-28 02:28:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950086931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:35,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:35,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:35,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951420701] [2024-11-28 02:28:35,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:35,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:28:35,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:35,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:28:35,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:35,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-28 02:28:35,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 415 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:35,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:35,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-28 02:28:35,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:36,459 INFO L124 PetriNetUnfolderBase]: 2294/5673 cut-off events. [2024-11-28 02:28:36,459 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2024-11-28 02:28:36,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9588 conditions, 5673 events. 2294/5673 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 51740 event pairs, 1412 based on Foata normal form. 88/4446 useless extension candidates. Maximal degree in co-relation 9491. Up to 1735 conditions per place. [2024-11-28 02:28:36,499 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 106 selfloop transitions, 10 changer transitions 0/154 dead transitions. [2024-11-28 02:28:36,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 154 transitions, 829 flow [2024-11-28 02:28:36,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:28:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:28:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 293 transitions. [2024-11-28 02:28:36,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6813953488372093 [2024-11-28 02:28:36,501 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 415 flow. Second operand 5 states and 293 transitions. [2024-11-28 02:28:36,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 154 transitions, 829 flow [2024-11-28 02:28:36,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 154 transitions, 735 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-28 02:28:36,507 INFO L231 Difference]: Finished difference. Result has 100 places, 113 transitions, 442 flow [2024-11-28 02:28:36,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=442, PETRI_PLACES=100, PETRI_TRANSITIONS=113} [2024-11-28 02:28:36,508 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2024-11-28 02:28:36,508 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 113 transitions, 442 flow [2024-11-28 02:28:36,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:36,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:36,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:36,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:28:36,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:36,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1093788564, now seen corresponding path program 1 times [2024-11-28 02:28:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:36,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432647329] [2024-11-28 02:28:36,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:36,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:36,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:36,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432647329] [2024-11-28 02:28:36,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432647329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:36,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048644434] [2024-11-28 02:28:36,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:36,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:36,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:36,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:36,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:28:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:36,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:28:36,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:36,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:28:36,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048644434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:36,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:28:36,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-28 02:28:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465163355] [2024-11-28 02:28:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:36,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:28:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:36,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:28:36,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:28:36,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-28 02:28:36,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:36,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:36,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-28 02:28:36,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:37,505 INFO L124 PetriNetUnfolderBase]: 2058/5224 cut-off events. [2024-11-28 02:28:37,505 INFO L125 PetriNetUnfolderBase]: For 500/500 co-relation queries the response was YES. [2024-11-28 02:28:37,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8582 conditions, 5224 events. 2058/5224 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 47171 event pairs, 1289 based on Foata normal form. 80/3999 useless extension candidates. Maximal degree in co-relation 8493. Up to 3126 conditions per place. [2024-11-28 02:28:37,536 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 66 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2024-11-28 02:28:37,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 548 flow [2024-11-28 02:28:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:28:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:28:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-28 02:28:37,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:28:37,537 INFO L175 Difference]: Start difference. First operand has 100 places, 113 transitions, 442 flow. Second operand 3 states and 172 transitions. [2024-11-28 02:28:37,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 548 flow [2024-11-28 02:28:37,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 529 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 02:28:37,542 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 397 flow [2024-11-28 02:28:37,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2024-11-28 02:28:37,542 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 17 predicate places. [2024-11-28 02:28:37,543 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 397 flow [2024-11-28 02:28:37,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:37,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:37,543 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:37,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:28:37,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:28:37,744 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:37,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1080764437, now seen corresponding path program 1 times [2024-11-28 02:28:37,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:37,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933668518] [2024-11-28 02:28:37,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:37,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:37,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:37,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933668518] [2024-11-28 02:28:37,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933668518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:37,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:37,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:37,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80292950] [2024-11-28 02:28:37,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:37,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:37,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:37,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:37,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:28:37,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-28 02:28:37,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:37,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:37,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-28 02:28:37,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:38,881 INFO L124 PetriNetUnfolderBase]: 4290/9600 cut-off events. [2024-11-28 02:28:38,881 INFO L125 PetriNetUnfolderBase]: For 115/119 co-relation queries the response was YES. [2024-11-28 02:28:38,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16477 conditions, 9600 events. 4290/9600 cut-off events. For 115/119 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 88096 event pairs, 1586 based on Foata normal form. 104/7709 useless extension candidates. Maximal degree in co-relation 16460. Up to 3471 conditions per place. [2024-11-28 02:28:38,939 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 110 selfloop transitions, 3 changer transitions 0/153 dead transitions. [2024-11-28 02:28:38,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 153 transitions, 716 flow [2024-11-28 02:28:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:28:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-28 02:28:38,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2024-11-28 02:28:38,940 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 397 flow. Second operand 4 states and 262 transitions. [2024-11-28 02:28:38,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 153 transitions, 716 flow [2024-11-28 02:28:38,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:28:38,948 INFO L231 Difference]: Finished difference. Result has 100 places, 111 transitions, 418 flow [2024-11-28 02:28:38,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=100, PETRI_TRANSITIONS=111} [2024-11-28 02:28:38,950 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2024-11-28 02:28:38,950 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 111 transitions, 418 flow [2024-11-28 02:28:38,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:38,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:38,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:38,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:28:38,952 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:38,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1507918239, now seen corresponding path program 1 times [2024-11-28 02:28:38,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:38,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432295769] [2024-11-28 02:28:38,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:38,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:39,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:39,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432295769] [2024-11-28 02:28:39,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432295769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394919800] [2024-11-28 02:28:39,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:39,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:39,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:39,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:39,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:28:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:39,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:28:39,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:39,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:28:39,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394919800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:39,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:28:39,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-28 02:28:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132605091] [2024-11-28 02:28:39,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:39,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:39,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:39,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:28:39,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-28 02:28:39,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 111 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:39,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:39,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-28 02:28:39,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:40,278 INFO L124 PetriNetUnfolderBase]: 3808/9616 cut-off events. [2024-11-28 02:28:40,278 INFO L125 PetriNetUnfolderBase]: For 1165/1197 co-relation queries the response was YES. [2024-11-28 02:28:40,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16447 conditions, 9616 events. 3808/9616 cut-off events. For 1165/1197 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 95899 event pairs, 2428 based on Foata normal form. 118/7541 useless extension candidates. Maximal degree in co-relation 16428. Up to 5751 conditions per place. [2024-11-28 02:28:40,342 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 63 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-28 02:28:40,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 530 flow [2024-11-28 02:28:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:28:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-28 02:28:40,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-28 02:28:40,346 INFO L175 Difference]: Start difference. First operand has 100 places, 111 transitions, 418 flow. Second operand 4 states and 216 transitions. [2024-11-28 02:28:40,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 530 flow [2024-11-28 02:28:40,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 107 transitions, 519 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:28:40,352 INFO L231 Difference]: Finished difference. Result has 97 places, 107 transitions, 393 flow [2024-11-28 02:28:40,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=97, PETRI_TRANSITIONS=107} [2024-11-28 02:28:40,354 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-11-28 02:28:40,354 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 107 transitions, 393 flow [2024-11-28 02:28:40,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:40,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:40,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:40,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:28:40,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:28:40,560 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:40,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash -856038997, now seen corresponding path program 1 times [2024-11-28 02:28:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949396533] [2024-11-28 02:28:40,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:40,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:40,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949396533] [2024-11-28 02:28:40,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949396533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:40,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257688344] [2024-11-28 02:28:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:40,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:40,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:40,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:40,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:28:40,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:28:40,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 107 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:40,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:40,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:28:40,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:41,932 INFO L124 PetriNetUnfolderBase]: 6632/14740 cut-off events. [2024-11-28 02:28:41,933 INFO L125 PetriNetUnfolderBase]: For 634/666 co-relation queries the response was YES. [2024-11-28 02:28:41,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25988 conditions, 14740 events. 6632/14740 cut-off events. For 634/666 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 144838 event pairs, 2324 based on Foata normal form. 416/12060 useless extension candidates. Maximal degree in co-relation 25971. Up to 5515 conditions per place. [2024-11-28 02:28:42,021 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 105 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2024-11-28 02:28:42,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 687 flow [2024-11-28 02:28:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:28:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-28 02:28:42,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-11-28 02:28:42,023 INFO L175 Difference]: Start difference. First operand has 97 places, 107 transitions, 393 flow. Second operand 4 states and 242 transitions. [2024-11-28 02:28:42,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 687 flow [2024-11-28 02:28:42,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 142 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:28:42,028 INFO L231 Difference]: Finished difference. Result has 100 places, 109 transitions, 420 flow [2024-11-28 02:28:42,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=420, PETRI_PLACES=100, PETRI_TRANSITIONS=109} [2024-11-28 02:28:42,030 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2024-11-28 02:28:42,030 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 109 transitions, 420 flow [2024-11-28 02:28:42,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:42,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:42,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:42,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:28:42,031 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:42,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash -767404326, now seen corresponding path program 1 times [2024-11-28 02:28:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264552216] [2024-11-28 02:28:42,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:42,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:42,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264552216] [2024-11-28 02:28:42,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264552216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:42,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:42,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:28:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007558176] [2024-11-28 02:28:42,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:42,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:28:42,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:42,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:28:42,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:42,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-28 02:28:42,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 109 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:42,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:42,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-28 02:28:42,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:42,860 INFO L124 PetriNetUnfolderBase]: 2710/7008 cut-off events. [2024-11-28 02:28:42,860 INFO L125 PetriNetUnfolderBase]: For 1438/1526 co-relation queries the response was YES. [2024-11-28 02:28:42,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12875 conditions, 7008 events. 2710/7008 cut-off events. For 1438/1526 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 65977 event pairs, 1668 based on Foata normal form. 56/5729 useless extension candidates. Maximal degree in co-relation 12857. Up to 3531 conditions per place. [2024-11-28 02:28:42,901 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 109 selfloop transitions, 4 changer transitions 6/157 dead transitions. [2024-11-28 02:28:42,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 157 transitions, 793 flow [2024-11-28 02:28:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:28:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:28:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-11-28 02:28:42,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.727906976744186 [2024-11-28 02:28:42,904 INFO L175 Difference]: Start difference. First operand has 100 places, 109 transitions, 420 flow. Second operand 5 states and 313 transitions. [2024-11-28 02:28:42,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 157 transitions, 793 flow [2024-11-28 02:28:42,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 157 transitions, 793 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:28:42,914 INFO L231 Difference]: Finished difference. Result has 106 places, 110 transitions, 439 flow [2024-11-28 02:28:42,915 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=439, PETRI_PLACES=106, PETRI_TRANSITIONS=110} [2024-11-28 02:28:42,916 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 27 predicate places. [2024-11-28 02:28:42,917 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 439 flow [2024-11-28 02:28:42,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:42,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:42,918 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:42,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:28:42,918 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:42,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:42,919 INFO L85 PathProgramCache]: Analyzing trace with hash 48088894, now seen corresponding path program 1 times [2024-11-28 02:28:42,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:42,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976933053] [2024-11-28 02:28:42,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:42,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:42,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976933053] [2024-11-28 02:28:42,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976933053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:42,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:42,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424967499] [2024-11-28 02:28:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:42,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:42,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:42,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:28:43,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-28 02:28:43,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:43,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:43,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-28 02:28:43,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:44,120 INFO L124 PetriNetUnfolderBase]: 5248/12474 cut-off events. [2024-11-28 02:28:44,121 INFO L125 PetriNetUnfolderBase]: For 3540/3852 co-relation queries the response was YES. [2024-11-28 02:28:44,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23585 conditions, 12474 events. 5248/12474 cut-off events. For 3540/3852 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 122462 event pairs, 2066 based on Foata normal form. 266/10579 useless extension candidates. Maximal degree in co-relation 23563. Up to 4515 conditions per place. [2024-11-28 02:28:44,175 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 122 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2024-11-28 02:28:44,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 161 transitions, 873 flow [2024-11-28 02:28:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:28:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-11-28 02:28:44,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.752906976744186 [2024-11-28 02:28:44,177 INFO L175 Difference]: Start difference. First operand has 106 places, 110 transitions, 439 flow. Second operand 4 states and 259 transitions. [2024-11-28 02:28:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 161 transitions, 873 flow [2024-11-28 02:28:44,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 161 transitions, 868 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:28:44,187 INFO L231 Difference]: Finished difference. Result has 109 places, 112 transitions, 456 flow [2024-11-28 02:28:44,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=456, PETRI_PLACES=109, PETRI_TRANSITIONS=112} [2024-11-28 02:28:44,188 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2024-11-28 02:28:44,188 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 112 transitions, 456 flow [2024-11-28 02:28:44,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:44,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:44,188 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:44,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:28:44,188 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:44,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1490757570, now seen corresponding path program 1 times [2024-11-28 02:28:44,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:44,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356078065] [2024-11-28 02:28:44,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:44,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:44,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:44,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356078065] [2024-11-28 02:28:44,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356078065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:44,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:44,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:44,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533753337] [2024-11-28 02:28:44,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:44,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:44,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:44,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:44,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:28:44,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:28:44,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 112 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:44,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:44,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:28:44,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:45,674 INFO L124 PetriNetUnfolderBase]: 8576/18770 cut-off events. [2024-11-28 02:28:45,674 INFO L125 PetriNetUnfolderBase]: For 6705/7081 co-relation queries the response was YES. [2024-11-28 02:28:45,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38499 conditions, 18770 events. 8576/18770 cut-off events. For 6705/7081 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 185860 event pairs, 3382 based on Foata normal form. 656/16995 useless extension candidates. Maximal degree in co-relation 38476. Up to 7339 conditions per place. [2024-11-28 02:28:45,753 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 118 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2024-11-28 02:28:45,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 155 transitions, 870 flow [2024-11-28 02:28:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:28:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-11-28 02:28:45,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-11-28 02:28:45,755 INFO L175 Difference]: Start difference. First operand has 109 places, 112 transitions, 456 flow. Second operand 4 states and 240 transitions. [2024-11-28 02:28:45,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 155 transitions, 870 flow [2024-11-28 02:28:45,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 155 transitions, 868 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:28:45,801 INFO L231 Difference]: Finished difference. Result has 113 places, 114 transitions, 488 flow [2024-11-28 02:28:45,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=488, PETRI_PLACES=113, PETRI_TRANSITIONS=114} [2024-11-28 02:28:45,802 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2024-11-28 02:28:45,802 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 114 transitions, 488 flow [2024-11-28 02:28:45,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:45,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:45,802 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:45,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:28:45,802 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:45,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:45,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1031154749, now seen corresponding path program 1 times [2024-11-28 02:28:45,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:45,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815418437] [2024-11-28 02:28:45,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:45,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:45,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815418437] [2024-11-28 02:28:45,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815418437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:45,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:45,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:28:45,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934198060] [2024-11-28 02:28:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:45,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:28:45,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:45,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:28:45,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:45,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-28 02:28:45,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 114 transitions, 488 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:45,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:45,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-28 02:28:45,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:47,205 INFO L124 PetriNetUnfolderBase]: 5550/13982 cut-off events. [2024-11-28 02:28:47,206 INFO L125 PetriNetUnfolderBase]: For 6491/6895 co-relation queries the response was YES. [2024-11-28 02:28:47,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29621 conditions, 13982 events. 5550/13982 cut-off events. For 6491/6895 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 146346 event pairs, 3746 based on Foata normal form. 216/12619 useless extension candidates. Maximal degree in co-relation 29596. Up to 7943 conditions per place. [2024-11-28 02:28:47,275 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 77 selfloop transitions, 3 changer transitions 24/142 dead transitions. [2024-11-28 02:28:47,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 142 transitions, 796 flow [2024-11-28 02:28:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:28:47,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:28:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-28 02:28:47,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6837209302325581 [2024-11-28 02:28:47,277 INFO L175 Difference]: Start difference. First operand has 113 places, 114 transitions, 488 flow. Second operand 5 states and 294 transitions. [2024-11-28 02:28:47,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 142 transitions, 796 flow [2024-11-28 02:28:47,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 142 transitions, 796 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:28:47,356 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 454 flow [2024-11-28 02:28:47,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2024-11-28 02:28:47,357 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 40 predicate places. [2024-11-28 02:28:47,358 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 454 flow [2024-11-28 02:28:47,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:47,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:47,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:47,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:28:47,359 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:47,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1682037602, now seen corresponding path program 1 times [2024-11-28 02:28:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:47,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063124688] [2024-11-28 02:28:47,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:47,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:47,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:47,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063124688] [2024-11-28 02:28:47,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063124688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:47,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:47,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:28:47,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352474670] [2024-11-28 02:28:47,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:47,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:28:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:47,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:28:47,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:47,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-28 02:28:47,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 454 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:47,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:47,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-28 02:28:47,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:48,328 INFO L124 PetriNetUnfolderBase]: 3141/8000 cut-off events. [2024-11-28 02:28:48,328 INFO L125 PetriNetUnfolderBase]: For 3858/4062 co-relation queries the response was YES. [2024-11-28 02:28:48,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17091 conditions, 8000 events. 3141/8000 cut-off events. For 3858/4062 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 76041 event pairs, 2038 based on Foata normal form. 160/7398 useless extension candidates. Maximal degree in co-relation 17062. Up to 3991 conditions per place. [2024-11-28 02:28:48,365 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 100 selfloop transitions, 8 changer transitions 8/154 dead transitions. [2024-11-28 02:28:48,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 154 transitions, 856 flow [2024-11-28 02:28:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:28:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:28:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-11-28 02:28:48,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7209302325581395 [2024-11-28 02:28:48,367 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 454 flow. Second operand 5 states and 310 transitions. [2024-11-28 02:28:48,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 154 transitions, 856 flow [2024-11-28 02:28:48,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 831 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-28 02:28:48,392 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 466 flow [2024-11-28 02:28:48,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2024-11-28 02:28:48,392 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 37 predicate places. [2024-11-28 02:28:48,392 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 466 flow [2024-11-28 02:28:48,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:48,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:48,393 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 02:28:48,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:28:48,393 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:48,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:48,393 INFO L85 PathProgramCache]: Analyzing trace with hash -835650914, now seen corresponding path program 2 times [2024-11-28 02:28:48,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:48,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495700976] [2024-11-28 02:28:48,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:28:48,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:48,405 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:28:48,406 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:28:48,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:48,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495700976] [2024-11-28 02:28:48,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495700976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:48,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241456265] [2024-11-28 02:28:48,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:28:48,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:48,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:48,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:48,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:28:48,511 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:28:48,511 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:48,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:28:48,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:28:48,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:28:48,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241456265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:48,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:48,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 02:28:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081338371] [2024-11-28 02:28:48,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:48,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:48,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:48,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:28:48,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-28 02:28:48,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:48,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:48,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-28 02:28:48,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:49,331 INFO L124 PetriNetUnfolderBase]: 3141/7979 cut-off events. [2024-11-28 02:28:49,331 INFO L125 PetriNetUnfolderBase]: For 3813/4017 co-relation queries the response was YES. [2024-11-28 02:28:49,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16919 conditions, 7979 events. 3141/7979 cut-off events. For 3813/4017 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 75675 event pairs, 2183 based on Foata normal form. 99/7193 useless extension candidates. Maximal degree in co-relation 16893. Up to 4669 conditions per place. [2024-11-28 02:28:49,356 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 56 selfloop transitions, 16 changer transitions 0/108 dead transitions. [2024-11-28 02:28:49,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 108 transitions, 600 flow [2024-11-28 02:28:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:28:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-11-28 02:28:49,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-11-28 02:28:49,357 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 466 flow. Second operand 4 states and 208 transitions. [2024-11-28 02:28:49,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 108 transitions, 600 flow [2024-11-28 02:28:49,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 587 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:28:49,380 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 475 flow [2024-11-28 02:28:49,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2024-11-28 02:28:49,381 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 37 predicate places. [2024-11-28 02:28:49,381 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 475 flow [2024-11-28 02:28:49,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:49,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:49,381 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-28 02:28:49,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:28:49,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:28:49,581 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:49,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash -543761762, now seen corresponding path program 1 times [2024-11-28 02:28:49,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:49,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849571759] [2024-11-28 02:28:49,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:49,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:49,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:49,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849571759] [2024-11-28 02:28:49,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849571759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:49,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995365318] [2024-11-28 02:28:49,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:49,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:49,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:28:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:49,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:28:49,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:49,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:50,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995365318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:50,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:50,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-28 02:28:50,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014792198] [2024-11-28 02:28:50,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:50,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:28:50,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:50,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:28:50,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:28:50,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-28 02:28:50,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 475 flow. Second operand has 24 states, 24 states have (on average 43.083333333333336) internal successors, (1034), 24 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:50,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:50,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-28 02:28:50,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:51,243 INFO L124 PetriNetUnfolderBase]: 3153/8045 cut-off events. [2024-11-28 02:28:51,243 INFO L125 PetriNetUnfolderBase]: For 4000/4204 co-relation queries the response was YES. [2024-11-28 02:28:51,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17144 conditions, 8045 events. 3153/8045 cut-off events. For 4000/4204 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 76643 event pairs, 2183 based on Foata normal form. 110/7263 useless extension candidates. Maximal degree in co-relation 17117. Up to 4659 conditions per place. [2024-11-28 02:28:51,280 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 47 selfloop transitions, 61 changer transitions 0/144 dead transitions. [2024-11-28 02:28:51,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 144 transitions, 919 flow [2024-11-28 02:28:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:28:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 02:28:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1029 transitions. [2024-11-28 02:28:51,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5438689217758985 [2024-11-28 02:28:51,283 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 475 flow. Second operand 22 states and 1029 transitions. [2024-11-28 02:28:51,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 144 transitions, 919 flow [2024-11-28 02:28:51,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 144 transitions, 851 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:28:51,312 INFO L231 Difference]: Finished difference. Result has 140 places, 144 transitions, 803 flow [2024-11-28 02:28:51,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=803, PETRI_PLACES=140, PETRI_TRANSITIONS=144} [2024-11-28 02:28:51,313 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 61 predicate places. [2024-11-28 02:28:51,313 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 144 transitions, 803 flow [2024-11-28 02:28:51,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 43.083333333333336) internal successors, (1034), 24 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:51,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:51,314 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:51,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:28:51,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:28:51,515 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:51,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash 474562695, now seen corresponding path program 1 times [2024-11-28 02:28:51,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:51,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231369644] [2024-11-28 02:28:51,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:51,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:51,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:51,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231369644] [2024-11-28 02:28:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231369644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:51,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:51,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:28:51,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867885979] [2024-11-28 02:28:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:51,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:28:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:51,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:28:51,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:51,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-28 02:28:51,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 144 transitions, 803 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:51,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:51,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-28 02:28:51,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:52,421 INFO L124 PetriNetUnfolderBase]: 2790/7082 cut-off events. [2024-11-28 02:28:52,422 INFO L125 PetriNetUnfolderBase]: For 3488/3690 co-relation queries the response was YES. [2024-11-28 02:28:52,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15220 conditions, 7082 events. 2790/7082 cut-off events. For 3488/3690 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 66237 event pairs, 1873 based on Foata normal form. 108/6400 useless extension candidates. Maximal degree in co-relation 15187. Up to 4033 conditions per place. [2024-11-28 02:28:52,462 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 93 selfloop transitions, 12 changer transitions 20/162 dead transitions. [2024-11-28 02:28:52,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 162 transitions, 1102 flow [2024-11-28 02:28:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:28:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:28:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2024-11-28 02:28:52,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6767441860465117 [2024-11-28 02:28:52,464 INFO L175 Difference]: Start difference. First operand has 140 places, 144 transitions, 803 flow. Second operand 5 states and 291 transitions. [2024-11-28 02:28:52,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 162 transitions, 1102 flow [2024-11-28 02:28:52,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 162 transitions, 946 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-11-28 02:28:52,486 INFO L231 Difference]: Finished difference. Result has 137 places, 142 transitions, 657 flow [2024-11-28 02:28:52,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=657, PETRI_PLACES=137, PETRI_TRANSITIONS=142} [2024-11-28 02:28:52,487 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 58 predicate places. [2024-11-28 02:28:52,487 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 142 transitions, 657 flow [2024-11-28 02:28:52,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:52,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:52,488 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:52,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:28:52,488 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:52,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1243467054, now seen corresponding path program 1 times [2024-11-28 02:28:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:52,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906830787] [2024-11-28 02:28:52,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:52,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:52,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906830787] [2024-11-28 02:28:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906830787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936306024] [2024-11-28 02:28:52,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:52,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:52,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:52,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:28:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:53,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:28:53,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:53,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:28:53,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:28:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:53,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:53,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 02:28:53,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 02:28:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:53,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936306024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:53,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:53,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 02:28:53,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708819960] [2024-11-28 02:28:53,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:53,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:28:53,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:53,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:28:53,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:28:53,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2024-11-28 02:28:53,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 142 transitions, 657 flow. Second operand has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:53,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:53,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2024-11-28 02:28:53,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:55,061 INFO L124 PetriNetUnfolderBase]: 3124/7346 cut-off events. [2024-11-28 02:28:55,062 INFO L125 PetriNetUnfolderBase]: For 3865/4150 co-relation queries the response was YES. [2024-11-28 02:28:55,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16299 conditions, 7346 events. 3124/7346 cut-off events. For 3865/4150 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 66505 event pairs, 758 based on Foata normal form. 110/6758 useless extension candidates. Maximal degree in co-relation 16265. Up to 1671 conditions per place. [2024-11-28 02:28:55,122 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 168 selfloop transitions, 35 changer transitions 0/238 dead transitions. [2024-11-28 02:28:55,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 238 transitions, 1424 flow [2024-11-28 02:28:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:28:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:28:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 558 transitions. [2024-11-28 02:28:55,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6488372093023256 [2024-11-28 02:28:55,125 INFO L175 Difference]: Start difference. First operand has 137 places, 142 transitions, 657 flow. Second operand 10 states and 558 transitions. [2024-11-28 02:28:55,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 238 transitions, 1424 flow [2024-11-28 02:28:55,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 238 transitions, 1374 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-28 02:28:55,165 INFO L231 Difference]: Finished difference. Result has 138 places, 149 transitions, 762 flow [2024-11-28 02:28:55,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=762, PETRI_PLACES=138, PETRI_TRANSITIONS=149} [2024-11-28 02:28:55,166 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 59 predicate places. [2024-11-28 02:28:55,166 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 149 transitions, 762 flow [2024-11-28 02:28:55,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:55,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:55,166 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:55,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:28:55,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:28:55,367 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:55,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:55,368 INFO L85 PathProgramCache]: Analyzing trace with hash 107196023, now seen corresponding path program 1 times [2024-11-28 02:28:55,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:55,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205278233] [2024-11-28 02:28:55,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:55,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205278233] [2024-11-28 02:28:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205278233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342525581] [2024-11-28 02:28:55,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:55,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:55,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:55,724 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:55,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:28:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:55,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:28:55,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:55,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:28:55,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 02:28:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:55,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:56,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 02:28:56,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 02:28:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:28:56,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342525581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:56,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:56,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 02:28:56,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456613670] [2024-11-28 02:28:56,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:56,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:28:56,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:56,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:28:56,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:28:56,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 86 [2024-11-28 02:28:56,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 149 transitions, 762 flow. Second operand has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:56,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:56,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 86 [2024-11-28 02:28:56,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:57,573 INFO L124 PetriNetUnfolderBase]: 3676/7900 cut-off events. [2024-11-28 02:28:57,573 INFO L125 PetriNetUnfolderBase]: For 6605/6966 co-relation queries the response was YES. [2024-11-28 02:28:57,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18970 conditions, 7900 events. 3676/7900 cut-off events. For 6605/6966 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 67883 event pairs, 992 based on Foata normal form. 196/7222 useless extension candidates. Maximal degree in co-relation 18936. Up to 2109 conditions per place. [2024-11-28 02:28:57,603 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 172 selfloop transitions, 35 changer transitions 0/239 dead transitions. [2024-11-28 02:28:57,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 239 transitions, 1493 flow [2024-11-28 02:28:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:28:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:28:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2024-11-28 02:28:57,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-11-28 02:28:57,606 INFO L175 Difference]: Start difference. First operand has 138 places, 149 transitions, 762 flow. Second operand 10 states and 538 transitions. [2024-11-28 02:28:57,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 239 transitions, 1493 flow [2024-11-28 02:28:57,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 239 transitions, 1473 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 02:28:57,629 INFO L231 Difference]: Finished difference. Result has 146 places, 151 transitions, 843 flow [2024-11-28 02:28:57,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=843, PETRI_PLACES=146, PETRI_TRANSITIONS=151} [2024-11-28 02:28:57,629 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 67 predicate places. [2024-11-28 02:28:57,629 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 151 transitions, 843 flow [2024-11-28 02:28:57,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:57,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:57,630 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:57,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:28:57,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:57,831 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:28:57,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1034064315, now seen corresponding path program 1 times [2024-11-28 02:28:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:57,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024827382] [2024-11-28 02:28:57,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:57,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:58,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024827382] [2024-11-28 02:28:58,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024827382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198989797] [2024-11-28 02:28:58,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:58,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:58,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:58,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:58,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:28:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:58,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:28:58,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:58,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:28:58,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:28:58,595 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:28:58,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:28:58,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 02:28:58,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:28:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:58,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:58,848 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_147| Int) (v_ArrVal_194 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_147|) 0)) (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_147| v_ArrVal_194) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2024-11-28 02:28:58,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:28:58,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-28 02:28:58,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:28:58,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-28 02:28:58,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-28 02:28:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 02:28:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198989797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:58,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:58,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2024-11-28 02:28:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909305586] [2024-11-28 02:28:58,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:58,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:28:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:58,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:28:58,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=4, NotChecked=34, Total=380 [2024-11-28 02:28:58,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-28 02:28:58,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 151 transitions, 843 flow. Second operand has 20 states, 20 states have (on average 33.6) internal successors, (672), 20 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:58,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:58,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-28 02:28:58,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:02,165 INFO L124 PetriNetUnfolderBase]: 11010/19581 cut-off events. [2024-11-28 02:29:02,165 INFO L125 PetriNetUnfolderBase]: For 27563/28935 co-relation queries the response was YES. [2024-11-28 02:29:02,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53143 conditions, 19581 events. 11010/19581 cut-off events. For 27563/28935 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 161454 event pairs, 2586 based on Foata normal form. 596/18264 useless extension candidates. Maximal degree in co-relation 53107. Up to 2858 conditions per place. [2024-11-28 02:29:02,270 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 438 selfloop transitions, 63 changer transitions 0/529 dead transitions. [2024-11-28 02:29:02,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 529 transitions, 3873 flow [2024-11-28 02:29:02,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:29:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 02:29:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1053 transitions. [2024-11-28 02:29:02,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5101744186046512 [2024-11-28 02:29:02,274 INFO L175 Difference]: Start difference. First operand has 146 places, 151 transitions, 843 flow. Second operand 24 states and 1053 transitions. [2024-11-28 02:29:02,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 529 transitions, 3873 flow [2024-11-28 02:29:02,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 529 transitions, 3703 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-28 02:29:02,395 INFO L231 Difference]: Finished difference. Result has 168 places, 185 transitions, 1212 flow [2024-11-28 02:29:02,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1212, PETRI_PLACES=168, PETRI_TRANSITIONS=185} [2024-11-28 02:29:02,395 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 89 predicate places. [2024-11-28 02:29:02,395 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 185 transitions, 1212 flow [2024-11-28 02:29:02,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 33.6) internal successors, (672), 20 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:02,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:02,396 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:02,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:29:02,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:02,596 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:02,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:02,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1001487225, now seen corresponding path program 1 times [2024-11-28 02:29:02,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:02,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076930500] [2024-11-28 02:29:02,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:02,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:29:02,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:02,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076930500] [2024-11-28 02:29:02,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076930500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:02,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253596872] [2024-11-28 02:29:02,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:02,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:02,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:02,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:02,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:29:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:02,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:29:02,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:02,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:03,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253596872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:03,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:03,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-28 02:29:03,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061995410] [2024-11-28 02:29:03,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:03,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:29:03,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:03,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:29:03,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:29:03,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:29:03,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 185 transitions, 1212 flow. Second operand has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:03,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:03,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:29:03,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:05,437 INFO L124 PetriNetUnfolderBase]: 4828/11305 cut-off events. [2024-11-28 02:29:05,437 INFO L125 PetriNetUnfolderBase]: For 16952/17603 co-relation queries the response was YES. [2024-11-28 02:29:05,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29705 conditions, 11305 events. 4828/11305 cut-off events. For 16952/17603 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 108452 event pairs, 623 based on Foata normal form. 288/10351 useless extension candidates. Maximal degree in co-relation 29664. Up to 2096 conditions per place. [2024-11-28 02:29:05,523 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 320 selfloop transitions, 57 changer transitions 14/430 dead transitions. [2024-11-28 02:29:05,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 430 transitions, 3301 flow [2024-11-28 02:29:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:29:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 02:29:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 894 transitions. [2024-11-28 02:29:05,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6114911080711354 [2024-11-28 02:29:05,525 INFO L175 Difference]: Start difference. First operand has 168 places, 185 transitions, 1212 flow. Second operand 17 states and 894 transitions. [2024-11-28 02:29:05,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 430 transitions, 3301 flow [2024-11-28 02:29:05,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 430 transitions, 3184 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-11-28 02:29:05,626 INFO L231 Difference]: Finished difference. Result has 181 places, 206 transitions, 1464 flow [2024-11-28 02:29:05,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1464, PETRI_PLACES=181, PETRI_TRANSITIONS=206} [2024-11-28 02:29:05,627 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 102 predicate places. [2024-11-28 02:29:05,627 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 206 transitions, 1464 flow [2024-11-28 02:29:05,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:05,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:05,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:05,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:29:05,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:05,831 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:05,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash -971890796, now seen corresponding path program 1 times [2024-11-28 02:29:05,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:05,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331799944] [2024-11-28 02:29:05,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:05,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:06,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:06,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331799944] [2024-11-28 02:29:06,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331799944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:06,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588735373] [2024-11-28 02:29:06,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:06,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:06,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:06,522 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:06,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:29:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:06,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:29:06,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:06,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:29:06,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:29:06,706 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:29:06,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:29:06,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:29:06,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 02:29:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:06,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:07,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:07,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-28 02:29:07,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:07,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-28 02:29:07,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 02:29:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588735373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:07,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:07,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2024-11-28 02:29:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045751446] [2024-11-28 02:29:07,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:07,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:29:07,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:07,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:29:07,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=392, Unknown=6, NotChecked=0, Total=462 [2024-11-28 02:29:07,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-28 02:29:07,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 206 transitions, 1464 flow. Second operand has 22 states, 22 states have (on average 25.227272727272727) internal successors, (555), 22 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:07,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:07,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-28 02:29:07,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:10,875 INFO L124 PetriNetUnfolderBase]: 8558/15603 cut-off events. [2024-11-28 02:29:10,875 INFO L125 PetriNetUnfolderBase]: For 24278/25572 co-relation queries the response was YES. [2024-11-28 02:29:10,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44547 conditions, 15603 events. 8558/15603 cut-off events. For 24278/25572 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 126379 event pairs, 1726 based on Foata normal form. 517/14981 useless extension candidates. Maximal degree in co-relation 44504. Up to 2894 conditions per place. [2024-11-28 02:29:11,003 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 589 selfloop transitions, 65 changer transitions 0/676 dead transitions. [2024-11-28 02:29:11,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 676 transitions, 5202 flow [2024-11-28 02:29:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:29:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-28 02:29:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1093 transitions. [2024-11-28 02:29:11,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4236434108527132 [2024-11-28 02:29:11,006 INFO L175 Difference]: Start difference. First operand has 181 places, 206 transitions, 1464 flow. Second operand 30 states and 1093 transitions. [2024-11-28 02:29:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 676 transitions, 5202 flow [2024-11-28 02:29:11,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 676 transitions, 5159 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-28 02:29:11,117 INFO L231 Difference]: Finished difference. Result has 208 places, 217 transitions, 1652 flow [2024-11-28 02:29:11,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1652, PETRI_PLACES=208, PETRI_TRANSITIONS=217} [2024-11-28 02:29:11,118 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 129 predicate places. [2024-11-28 02:29:11,118 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 217 transitions, 1652 flow [2024-11-28 02:29:11,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 25.227272727272727) internal successors, (555), 22 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:11,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:11,118 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:11,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:29:11,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:11,319 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:11,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash -63842790, now seen corresponding path program 1 times [2024-11-28 02:29:11,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:11,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665138434] [2024-11-28 02:29:11,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:11,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:11,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:11,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665138434] [2024-11-28 02:29:11,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665138434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:11,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253136731] [2024-11-28 02:29:11,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:11,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:11,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:11,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:11,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:29:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:12,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:29:12,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:12,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:29:12,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:29:12,096 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:29:12,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:29:12,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 02:29:12,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:29:12,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:12,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:12,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:12,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-28 02:29:12,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:12,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-28 02:29:12,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-28 02:29:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:12,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253136731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:12,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:12,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-11-28 02:29:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97888842] [2024-11-28 02:29:12,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:12,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:29:12,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:12,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:29:12,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=394, Unknown=6, NotChecked=0, Total=462 [2024-11-28 02:29:12,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-28 02:29:12,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 217 transitions, 1652 flow. Second operand has 22 states, 22 states have (on average 25.318181818181817) internal successors, (557), 22 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:12,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:12,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-28 02:29:12,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:15,693 INFO L124 PetriNetUnfolderBase]: 9244/16365 cut-off events. [2024-11-28 02:29:15,693 INFO L125 PetriNetUnfolderBase]: For 29455/30935 co-relation queries the response was YES. [2024-11-28 02:29:15,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50363 conditions, 16365 events. 9244/16365 cut-off events. For 29455/30935 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 130121 event pairs, 1960 based on Foata normal form. 871/16171 useless extension candidates. Maximal degree in co-relation 50315. Up to 3362 conditions per place. [2024-11-28 02:29:15,830 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 592 selfloop transitions, 71 changer transitions 42/730 dead transitions. [2024-11-28 02:29:15,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 730 transitions, 5753 flow [2024-11-28 02:29:15,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:29:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-28 02:29:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1162 transitions. [2024-11-28 02:29:15,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42223837209302323 [2024-11-28 02:29:15,832 INFO L175 Difference]: Start difference. First operand has 208 places, 217 transitions, 1652 flow. Second operand 32 states and 1162 transitions. [2024-11-28 02:29:15,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 730 transitions, 5753 flow [2024-11-28 02:29:15,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 730 transitions, 5647 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-11-28 02:29:15,955 INFO L231 Difference]: Finished difference. Result has 228 places, 230 transitions, 1794 flow [2024-11-28 02:29:15,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1794, PETRI_PLACES=228, PETRI_TRANSITIONS=230} [2024-11-28 02:29:15,956 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 149 predicate places. [2024-11-28 02:29:15,956 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 230 transitions, 1794 flow [2024-11-28 02:29:15,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 25.318181818181817) internal successors, (557), 22 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:15,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:15,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:15,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:29:16,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:29:16,157 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:16,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:16,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1991191758, now seen corresponding path program 1 times [2024-11-28 02:29:16,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:16,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831205032] [2024-11-28 02:29:16,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:16,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:16,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831205032] [2024-11-28 02:29:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831205032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389245796] [2024-11-28 02:29:16,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:16,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:16,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:16,685 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:16,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:29:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:16,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:29:16,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:16,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:29:16,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:29:16,855 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:29:16,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:29:16,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:29:16,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 02:29:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:16,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:17,095 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_154| Int) (v_ArrVal_268 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_154|) 0)) (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_154| v_ArrVal_268) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)))) is different from false [2024-11-28 02:29:17,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:17,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-28 02:29:17,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:17,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-28 02:29:17,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 02:29:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 02:29:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389245796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:17,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2024-11-28 02:29:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125057912] [2024-11-28 02:29:17,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:17,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:29:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:17,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:29:17,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=287, Unknown=5, NotChecked=34, Total=380 [2024-11-28 02:29:17,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-28 02:29:17,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 230 transitions, 1794 flow. Second operand has 20 states, 20 states have (on average 27.75) internal successors, (555), 20 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:17,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:17,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-28 02:29:17,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:19,853 INFO L124 PetriNetUnfolderBase]: 9536/17083 cut-off events. [2024-11-28 02:29:19,853 INFO L125 PetriNetUnfolderBase]: For 45012/46094 co-relation queries the response was YES. [2024-11-28 02:29:19,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54187 conditions, 17083 events. 9536/17083 cut-off events. For 45012/46094 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 136872 event pairs, 2874 based on Foata normal form. 384/16293 useless extension candidates. Maximal degree in co-relation 54134. Up to 3539 conditions per place. [2024-11-28 02:29:20,024 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 437 selfloop transitions, 61 changer transitions 0/531 dead transitions. [2024-11-28 02:29:20,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 531 transitions, 4613 flow [2024-11-28 02:29:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:29:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 02:29:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 892 transitions. [2024-11-28 02:29:20,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4321705426356589 [2024-11-28 02:29:20,026 INFO L175 Difference]: Start difference. First operand has 228 places, 230 transitions, 1794 flow. Second operand 24 states and 892 transitions. [2024-11-28 02:29:20,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 531 transitions, 4613 flow [2024-11-28 02:29:20,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 531 transitions, 4320 flow, removed 26 selfloop flow, removed 20 redundant places. [2024-11-28 02:29:20,159 INFO L231 Difference]: Finished difference. Result has 235 places, 236 transitions, 1843 flow [2024-11-28 02:29:20,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1843, PETRI_PLACES=235, PETRI_TRANSITIONS=236} [2024-11-28 02:29:20,160 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 156 predicate places. [2024-11-28 02:29:20,160 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 236 transitions, 1843 flow [2024-11-28 02:29:20,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 27.75) internal successors, (555), 20 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:20,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:20,160 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:20,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:29:20,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:20,360 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:20,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:20,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1031808582, now seen corresponding path program 1 times [2024-11-28 02:29:20,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:20,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800798622] [2024-11-28 02:29:20,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:20,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:29:20,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:20,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800798622] [2024-11-28 02:29:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800798622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:20,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:20,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:29:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091364759] [2024-11-28 02:29:20,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:20,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:29:20,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:20,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:29:20,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:20,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:29:20,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 236 transitions, 1843 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:20,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:20,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:29:20,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:21,853 INFO L124 PetriNetUnfolderBase]: 6275/13662 cut-off events. [2024-11-28 02:29:21,854 INFO L125 PetriNetUnfolderBase]: For 30248/30628 co-relation queries the response was YES. [2024-11-28 02:29:21,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42320 conditions, 13662 events. 6275/13662 cut-off events. For 30248/30628 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 127773 event pairs, 2748 based on Foata normal form. 404/13096 useless extension candidates. Maximal degree in co-relation 42265. Up to 5955 conditions per place. [2024-11-28 02:29:21,994 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 231 selfloop transitions, 14 changer transitions 15/304 dead transitions. [2024-11-28 02:29:21,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 304 transitions, 2838 flow [2024-11-28 02:29:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:29:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:29:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-11-28 02:29:21,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.688953488372093 [2024-11-28 02:29:21,995 INFO L175 Difference]: Start difference. First operand has 235 places, 236 transitions, 1843 flow. Second operand 4 states and 237 transitions. [2024-11-28 02:29:21,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 304 transitions, 2838 flow [2024-11-28 02:29:22,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 304 transitions, 2684 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-11-28 02:29:22,139 INFO L231 Difference]: Finished difference. Result has 216 places, 227 transitions, 1696 flow [2024-11-28 02:29:22,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1696, PETRI_PLACES=216, PETRI_TRANSITIONS=227} [2024-11-28 02:29:22,140 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 137 predicate places. [2024-11-28 02:29:22,140 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 227 transitions, 1696 flow [2024-11-28 02:29:22,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:22,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:22,140 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:22,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 02:29:22,140 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:22,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1567805744, now seen corresponding path program 1 times [2024-11-28 02:29:22,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:22,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120943666] [2024-11-28 02:29:22,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:29:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120943666] [2024-11-28 02:29:22,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120943666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:22,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791482513] [2024-11-28 02:29:22,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:22,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:22,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:22,206 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:22,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:29:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:22,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:29:22,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:22,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791482513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:22,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-28 02:29:22,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663410658] [2024-11-28 02:29:22,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:22,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:29:22,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:22,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:29:22,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:29:23,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:29:23,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 227 transitions, 1696 flow. Second operand has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:23,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:23,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:29:23,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:24,876 INFO L124 PetriNetUnfolderBase]: 4190/9841 cut-off events. [2024-11-28 02:29:24,876 INFO L125 PetriNetUnfolderBase]: For 22441/22941 co-relation queries the response was YES. [2024-11-28 02:29:24,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28863 conditions, 9841 events. 4190/9841 cut-off events. For 22441/22941 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 91274 event pairs, 132 based on Foata normal form. 208/9162 useless extension candidates. Maximal degree in co-relation 28812. Up to 2104 conditions per place. [2024-11-28 02:29:24,941 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 287 selfloop transitions, 55 changer transitions 44/429 dead transitions. [2024-11-28 02:29:24,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 429 transitions, 3713 flow [2024-11-28 02:29:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:29:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 02:29:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 884 transitions. [2024-11-28 02:29:24,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-11-28 02:29:24,943 INFO L175 Difference]: Start difference. First operand has 216 places, 227 transitions, 1696 flow. Second operand 17 states and 884 transitions. [2024-11-28 02:29:24,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 429 transitions, 3713 flow [2024-11-28 02:29:25,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 429 transitions, 3591 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-28 02:29:25,044 INFO L231 Difference]: Finished difference. Result has 222 places, 218 transitions, 1688 flow [2024-11-28 02:29:25,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1688, PETRI_PLACES=222, PETRI_TRANSITIONS=218} [2024-11-28 02:29:25,044 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 143 predicate places. [2024-11-28 02:29:25,044 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 218 transitions, 1688 flow [2024-11-28 02:29:25,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:25,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:25,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:25,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:29:25,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:25,245 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:25,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:25,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1597403198, now seen corresponding path program 1 times [2024-11-28 02:29:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:25,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877865061] [2024-11-28 02:29:25,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:25,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:29:25,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877865061] [2024-11-28 02:29:25,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877865061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:25,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:25,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:29:25,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391181271] [2024-11-28 02:29:25,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:25,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:29:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:25,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:29:25,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:25,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:29:25,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 218 transitions, 1688 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:25,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:25,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:29:25,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:26,497 INFO L124 PetriNetUnfolderBase]: 4720/10765 cut-off events. [2024-11-28 02:29:26,497 INFO L125 PetriNetUnfolderBase]: For 22632/22926 co-relation queries the response was YES. [2024-11-28 02:29:26,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31967 conditions, 10765 events. 4720/10765 cut-off events. For 22632/22926 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 99279 event pairs, 2214 based on Foata normal form. 248/10339 useless extension candidates. Maximal degree in co-relation 31917. Up to 4675 conditions per place. [2024-11-28 02:29:26,586 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 259 selfloop transitions, 9 changer transitions 0/305 dead transitions. [2024-11-28 02:29:26,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 305 transitions, 2797 flow [2024-11-28 02:29:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:29:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:29:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-11-28 02:29:26,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.688953488372093 [2024-11-28 02:29:26,587 INFO L175 Difference]: Start difference. First operand has 222 places, 218 transitions, 1688 flow. Second operand 4 states and 237 transitions. [2024-11-28 02:29:26,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 305 transitions, 2797 flow [2024-11-28 02:29:26,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 305 transitions, 2722 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-11-28 02:29:26,669 INFO L231 Difference]: Finished difference. Result has 210 places, 216 transitions, 1614 flow [2024-11-28 02:29:26,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1614, PETRI_PLACES=210, PETRI_TRANSITIONS=216} [2024-11-28 02:29:26,669 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 131 predicate places. [2024-11-28 02:29:26,669 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 216 transitions, 1614 flow [2024-11-28 02:29:26,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:26,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:26,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:26,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:29:26,670 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:26,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1597402173, now seen corresponding path program 1 times [2024-11-28 02:29:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:26,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596095117] [2024-11-28 02:29:26,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:26,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:26,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596095117] [2024-11-28 02:29:26,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596095117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:26,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253985890] [2024-11-28 02:29:26,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:26,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:26,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:26,904 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:26,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:29:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:27,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:29:27,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:27,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:29:27,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 02:29:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:27,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:27,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 02:29:27,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 02:29:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:27,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253985890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:27,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:27,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-28 02:29:27,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534857151] [2024-11-28 02:29:27,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:27,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:29:27,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:27,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:29:27,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:29:27,383 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-11-28 02:29:27,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 216 transitions, 1614 flow. Second operand has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:27,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:27,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-11-28 02:29:27,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:29,128 INFO L124 PetriNetUnfolderBase]: 6136/11478 cut-off events. [2024-11-28 02:29:29,129 INFO L125 PetriNetUnfolderBase]: For 25276/26012 co-relation queries the response was YES. [2024-11-28 02:29:29,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35736 conditions, 11478 events. 6136/11478 cut-off events. For 25276/26012 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 90460 event pairs, 1308 based on Foata normal form. 228/11095 useless extension candidates. Maximal degree in co-relation 35689. Up to 2796 conditions per place. [2024-11-28 02:29:29,219 INFO L140 encePairwiseOnDemand]: 69/86 looper letters, 467 selfloop transitions, 56 changer transitions 0/557 dead transitions. [2024-11-28 02:29:29,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 557 transitions, 4861 flow [2024-11-28 02:29:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:29:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:29:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 716 transitions. [2024-11-28 02:29:29,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5946843853820598 [2024-11-28 02:29:29,221 INFO L175 Difference]: Start difference. First operand has 210 places, 216 transitions, 1614 flow. Second operand 14 states and 716 transitions. [2024-11-28 02:29:29,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 557 transitions, 4861 flow [2024-11-28 02:29:29,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 557 transitions, 4846 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:29:29,292 INFO L231 Difference]: Finished difference. Result has 227 places, 221 transitions, 1789 flow [2024-11-28 02:29:29,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1789, PETRI_PLACES=227, PETRI_TRANSITIONS=221} [2024-11-28 02:29:29,293 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 148 predicate places. [2024-11-28 02:29:29,293 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 221 transitions, 1789 flow [2024-11-28 02:29:29,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:29,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:29,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:29,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:29:29,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 02:29:29,494 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:29,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2020139343, now seen corresponding path program 1 times [2024-11-28 02:29:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:29,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324372905] [2024-11-28 02:29:29,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:29,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324372905] [2024-11-28 02:29:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324372905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722218216] [2024-11-28 02:29:29,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:29,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:29,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:29,725 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:29,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:29:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:29,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:29:29,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:29,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:29:29,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:29:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:29,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:30,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 02:29:30,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 02:29:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:30,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722218216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:30,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:30,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-28 02:29:30,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588458967] [2024-11-28 02:29:30,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:30,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:29:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:30,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:29:30,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:29:30,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 86 [2024-11-28 02:29:30,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 221 transitions, 1789 flow. Second operand has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:30,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:30,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 86 [2024-11-28 02:29:30,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:32,096 INFO L124 PetriNetUnfolderBase]: 5902/11274 cut-off events. [2024-11-28 02:29:32,096 INFO L125 PetriNetUnfolderBase]: For 30273/30989 co-relation queries the response was YES. [2024-11-28 02:29:32,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37587 conditions, 11274 events. 5902/11274 cut-off events. For 30273/30989 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 90732 event pairs, 1476 based on Foata normal form. 574/11333 useless extension candidates. Maximal degree in co-relation 37533. Up to 3108 conditions per place. [2024-11-28 02:29:32,166 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 418 selfloop transitions, 58 changer transitions 87/601 dead transitions. [2024-11-28 02:29:32,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 601 transitions, 5404 flow [2024-11-28 02:29:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:29:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:29:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 777 transitions. [2024-11-28 02:29:32,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6023255813953489 [2024-11-28 02:29:32,168 INFO L175 Difference]: Start difference. First operand has 227 places, 221 transitions, 1789 flow. Second operand 15 states and 777 transitions. [2024-11-28 02:29:32,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 601 transitions, 5404 flow [2024-11-28 02:29:32,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 601 transitions, 5321 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-28 02:29:32,248 INFO L231 Difference]: Finished difference. Result has 239 places, 228 transitions, 1904 flow [2024-11-28 02:29:32,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1904, PETRI_PLACES=239, PETRI_TRANSITIONS=228} [2024-11-28 02:29:32,249 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 160 predicate places. [2024-11-28 02:29:32,249 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 228 transitions, 1904 flow [2024-11-28 02:29:32,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:32,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:32,250 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:32,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:29:32,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 02:29:32,450 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:32,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:32,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1312259635, now seen corresponding path program 1 times [2024-11-28 02:29:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:32,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151945178] [2024-11-28 02:29:32,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:32,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:29:32,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:32,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151945178] [2024-11-28 02:29:32,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151945178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:32,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315674948] [2024-11-28 02:29:32,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:32,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:32,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:32,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:29:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:32,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:29:32,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:29:32,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:29:32,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315674948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:32,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:32,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-28 02:29:32,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553229934] [2024-11-28 02:29:32,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:32,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:29:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:32,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:29:32,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:29:33,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:29:33,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 228 transitions, 1904 flow. Second operand has 19 states, 19 states have (on average 42.05263157894737) internal successors, (799), 19 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:33,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:33,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:29:33,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:35,798 INFO L124 PetriNetUnfolderBase]: 8404/18325 cut-off events. [2024-11-28 02:29:35,798 INFO L125 PetriNetUnfolderBase]: For 59755/60867 co-relation queries the response was YES. [2024-11-28 02:29:35,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62387 conditions, 18325 events. 8404/18325 cut-off events. For 59755/60867 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 176076 event pairs, 1283 based on Foata normal form. 638/18608 useless extension candidates. Maximal degree in co-relation 62329. Up to 3317 conditions per place. [2024-11-28 02:29:35,939 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 364 selfloop transitions, 94 changer transitions 48/553 dead transitions. [2024-11-28 02:29:35,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 553 transitions, 5266 flow [2024-11-28 02:29:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:29:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:29:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 777 transitions. [2024-11-28 02:29:35,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2024-11-28 02:29:35,941 INFO L175 Difference]: Start difference. First operand has 239 places, 228 transitions, 1904 flow. Second operand 14 states and 777 transitions. [2024-11-28 02:29:35,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 553 transitions, 5266 flow [2024-11-28 02:29:36,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 553 transitions, 4985 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-11-28 02:29:36,240 INFO L231 Difference]: Finished difference. Result has 247 places, 236 transitions, 2077 flow [2024-11-28 02:29:36,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2077, PETRI_PLACES=247, PETRI_TRANSITIONS=236} [2024-11-28 02:29:36,241 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 168 predicate places. [2024-11-28 02:29:36,241 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 236 transitions, 2077 flow [2024-11-28 02:29:36,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.05263157894737) internal successors, (799), 19 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:36,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:36,241 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:36,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:29:36,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:36,442 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:36,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1547459549, now seen corresponding path program 1 times [2024-11-28 02:29:36,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:36,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970046702] [2024-11-28 02:29:36,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:36,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:29:36,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970046702] [2024-11-28 02:29:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970046702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:36,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:36,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:29:36,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554498341] [2024-11-28 02:29:36,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:36,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:29:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:36,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:29:36,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:36,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:29:36,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 236 transitions, 2077 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:36,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:36,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:29:36,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:40,042 INFO L124 PetriNetUnfolderBase]: 10826/22354 cut-off events. [2024-11-28 02:29:40,042 INFO L125 PetriNetUnfolderBase]: For 64616/65430 co-relation queries the response was YES. [2024-11-28 02:29:40,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76932 conditions, 22354 events. 10826/22354 cut-off events. For 64616/65430 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 210901 event pairs, 4805 based on Foata normal form. 653/22528 useless extension candidates. Maximal degree in co-relation 76874. Up to 10024 conditions per place. [2024-11-28 02:29:40,186 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 227 selfloop transitions, 10 changer transitions 62/338 dead transitions. [2024-11-28 02:29:40,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 338 transitions, 3468 flow [2024-11-28 02:29:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:29:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:29:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2024-11-28 02:29:40,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6831395348837209 [2024-11-28 02:29:40,187 INFO L175 Difference]: Start difference. First operand has 247 places, 236 transitions, 2077 flow. Second operand 4 states and 235 transitions. [2024-11-28 02:29:40,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 338 transitions, 3468 flow [2024-11-28 02:29:40,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 338 transitions, 3427 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-28 02:29:40,532 INFO L231 Difference]: Finished difference. Result has 245 places, 204 transitions, 1743 flow [2024-11-28 02:29:40,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1743, PETRI_PLACES=245, PETRI_TRANSITIONS=204} [2024-11-28 02:29:40,533 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 166 predicate places. [2024-11-28 02:29:40,533 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 204 transitions, 1743 flow [2024-11-28 02:29:40,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:40,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:40,533 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:40,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 02:29:40,534 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:40,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2114189366, now seen corresponding path program 1 times [2024-11-28 02:29:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612193310] [2024-11-28 02:29:40,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:40,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:29:40,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:40,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612193310] [2024-11-28 02:29:40,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612193310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:40,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340856278] [2024-11-28 02:29:40,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:40,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:40,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:40,602 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:40,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:29:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:40,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:29:40,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:29:40,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:29:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340856278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:40,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:40,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-28 02:29:40,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528554641] [2024-11-28 02:29:40,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:40,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:29:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:40,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:29:40,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:29:41,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:29:41,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 204 transitions, 1743 flow. Second operand has 19 states, 19 states have (on average 42.26315789473684) internal successors, (803), 19 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:41,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:41,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:29:41,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:44,409 INFO L124 PetriNetUnfolderBase]: 8131/17976 cut-off events. [2024-11-28 02:29:44,409 INFO L125 PetriNetUnfolderBase]: For 57152/58676 co-relation queries the response was YES. [2024-11-28 02:29:44,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63180 conditions, 17976 events. 8131/17976 cut-off events. For 57152/58676 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 171728 event pairs, 1907 based on Foata normal form. 553/18211 useless extension candidates. Maximal degree in co-relation 63121. Up to 3925 conditions per place. [2024-11-28 02:29:44,555 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 224 selfloop transitions, 83 changer transitions 99/449 dead transitions. [2024-11-28 02:29:44,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 449 transitions, 4164 flow [2024-11-28 02:29:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:29:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:29:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 767 transitions. [2024-11-28 02:29:44,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6370431893687708 [2024-11-28 02:29:44,557 INFO L175 Difference]: Start difference. First operand has 245 places, 204 transitions, 1743 flow. Second operand 14 states and 767 transitions. [2024-11-28 02:29:44,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 449 transitions, 4164 flow [2024-11-28 02:29:45,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 449 transitions, 4068 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-11-28 02:29:45,081 INFO L231 Difference]: Finished difference. Result has 231 places, 202 transitions, 1839 flow [2024-11-28 02:29:45,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1839, PETRI_PLACES=231, PETRI_TRANSITIONS=202} [2024-11-28 02:29:45,081 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 152 predicate places. [2024-11-28 02:29:45,081 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 202 transitions, 1839 flow [2024-11-28 02:29:45,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.26315789473684) internal successors, (803), 19 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:45,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:45,082 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:45,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:29:45,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 02:29:45,282 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:45,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:45,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1997185324, now seen corresponding path program 1 times [2024-11-28 02:29:45,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:45,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736973158] [2024-11-28 02:29:45,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:45,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:45,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736973158] [2024-11-28 02:29:45,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736973158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742898213] [2024-11-28 02:29:45,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:45,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:45,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:45,923 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:45,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:29:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:46,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:29:46,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:46,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:29:46,186 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 19 treesize of output 7 [2024-11-28 02:29:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:29:46,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:46,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 02:29:46,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-28 02:29:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:29:46,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742898213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:46,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-28 02:29:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159370487] [2024-11-28 02:29:46,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:46,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:29:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:46,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:29:46,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:29:46,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-11-28 02:29:46,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 202 transitions, 1839 flow. Second operand has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:46,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:46,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-11-28 02:29:46,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:49,586 INFO L124 PetriNetUnfolderBase]: 7362/16065 cut-off events. [2024-11-28 02:29:49,586 INFO L125 PetriNetUnfolderBase]: For 46809/47740 co-relation queries the response was YES. [2024-11-28 02:29:49,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56140 conditions, 16065 events. 7362/16065 cut-off events. For 46809/47740 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 151931 event pairs, 1798 based on Foata normal form. 559/16514 useless extension candidates. Maximal degree in co-relation 56084. Up to 2850 conditions per place. [2024-11-28 02:29:49,887 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 372 selfloop transitions, 52 changer transitions 30/495 dead transitions. [2024-11-28 02:29:49,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 495 transitions, 4761 flow [2024-11-28 02:29:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:29:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 02:29:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 808 transitions. [2024-11-28 02:29:49,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814 [2024-11-28 02:29:49,889 INFO L175 Difference]: Start difference. First operand has 231 places, 202 transitions, 1839 flow. Second operand 16 states and 808 transitions. [2024-11-28 02:29:49,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 495 transitions, 4761 flow [2024-11-28 02:29:50,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 495 transitions, 4599 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-11-28 02:29:50,159 INFO L231 Difference]: Finished difference. Result has 233 places, 209 transitions, 1942 flow [2024-11-28 02:29:50,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1942, PETRI_PLACES=233, PETRI_TRANSITIONS=209} [2024-11-28 02:29:50,160 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 154 predicate places. [2024-11-28 02:29:50,160 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 209 transitions, 1942 flow [2024-11-28 02:29:50,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:50,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:50,160 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:50,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:29:50,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 02:29:50,361 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:50,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:50,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1783233867, now seen corresponding path program 1 times [2024-11-28 02:29:50,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:50,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697118126] [2024-11-28 02:29:50,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:50,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:50,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:50,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697118126] [2024-11-28 02:29:50,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697118126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:50,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837437165] [2024-11-28 02:29:50,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:50,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:50,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:50,897 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:50,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:29:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:51,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:29:51,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:51,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:29:51,200 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 21 treesize of output 9 [2024-11-28 02:29:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:29:51,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:51,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 02:29:51,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-28 02:29:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:29:51,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837437165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:51,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:51,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-28 02:29:51,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973875768] [2024-11-28 02:29:51,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:51,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:29:51,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:51,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:29:51,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:29:51,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 86 [2024-11-28 02:29:51,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 209 transitions, 1942 flow. Second operand has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:51,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:51,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 86 [2024-11-28 02:29:51,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:54,914 INFO L124 PetriNetUnfolderBase]: 8077/16934 cut-off events. [2024-11-28 02:29:54,914 INFO L125 PetriNetUnfolderBase]: For 57932/58895 co-relation queries the response was YES. [2024-11-28 02:29:55,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61337 conditions, 16934 events. 8077/16934 cut-off events. For 57932/58895 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 156695 event pairs, 2395 based on Foata normal form. 587/16850 useless extension candidates. Maximal degree in co-relation 61278. Up to 3531 conditions per place. [2024-11-28 02:29:55,041 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 357 selfloop transitions, 48 changer transitions 15/459 dead transitions. [2024-11-28 02:29:55,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 459 transitions, 4429 flow [2024-11-28 02:29:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:29:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:29:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 721 transitions. [2024-11-28 02:29:55,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5589147286821705 [2024-11-28 02:29:55,042 INFO L175 Difference]: Start difference. First operand has 233 places, 209 transitions, 1942 flow. Second operand 15 states and 721 transitions. [2024-11-28 02:29:55,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 459 transitions, 4429 flow [2024-11-28 02:29:55,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 459 transitions, 4358 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-28 02:29:55,305 INFO L231 Difference]: Finished difference. Result has 238 places, 209 transitions, 1980 flow [2024-11-28 02:29:55,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1980, PETRI_PLACES=238, PETRI_TRANSITIONS=209} [2024-11-28 02:29:55,306 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-11-28 02:29:55,306 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 209 transitions, 1980 flow [2024-11-28 02:29:55,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:55,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:55,307 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:55,534 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forcibly destroying the process [2024-11-28 02:29:55,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 02:29:55,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 02:29:55,539 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:29:55,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash 554324758, now seen corresponding path program 1 times [2024-11-28 02:29:55,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416844424] [2024-11-28 02:29:55,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:55,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:55,542 WARN L724 oredProcess$PipePump]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] The stream was forcibly closed: stdIn [2024-11-28 02:29:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416844424] [2024-11-28 02:29:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416844424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839644167] [2024-11-28 02:29:55,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:55,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:55,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:55,973 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:55,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:29:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:56,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 02:29:56,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:56,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:29:56,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:29:56,201 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:29:56,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:29:56,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 02:29:56,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 02:29:56,360 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 21 treesize of output 9 [2024-11-28 02:29:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:29:56,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:56,590 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_463 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_167| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_167|) 0)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_167| v_ArrVal_463) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) is different from false [2024-11-28 02:29:56,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:56,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-28 02:29:56,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:56,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2024-11-28 02:29:56,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:29:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-28 02:29:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839644167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:56,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:56,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-28 02:29:56,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757952197] [2024-11-28 02:29:56,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:56,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:29:56,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:56,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:29:56,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=822, Unknown=15, NotChecked=58, Total=992 [2024-11-28 02:29:56,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-28 02:29:56,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 209 transitions, 1980 flow. Second operand has 32 states, 32 states have (on average 28.375) internal successors, (908), 32 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:56,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:56,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-28 02:29:56,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:01,915 INFO L124 PetriNetUnfolderBase]: 11938/21269 cut-off events. [2024-11-28 02:30:01,915 INFO L125 PetriNetUnfolderBase]: For 73271/74892 co-relation queries the response was YES. [2024-11-28 02:30:02,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79067 conditions, 21269 events. 11938/21269 cut-off events. For 73271/74892 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 174752 event pairs, 2957 based on Foata normal form. 985/21431 useless extension candidates. Maximal degree in co-relation 79007. Up to 4439 conditions per place. [2024-11-28 02:30:02,095 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 540 selfloop transitions, 59 changer transitions 30/655 dead transitions. [2024-11-28 02:30:02,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 655 transitions, 6164 flow [2024-11-28 02:30:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:30:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:30:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 970 transitions. [2024-11-28 02:30:02,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-11-28 02:30:02,097 INFO L175 Difference]: Start difference. First operand has 238 places, 209 transitions, 1980 flow. Second operand 25 states and 970 transitions. [2024-11-28 02:30:02,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 655 transitions, 6164 flow [2024-11-28 02:30:02,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 655 transitions, 6066 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-28 02:30:02,418 INFO L231 Difference]: Finished difference. Result has 256 places, 215 transitions, 2083 flow [2024-11-28 02:30:02,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2083, PETRI_PLACES=256, PETRI_TRANSITIONS=215} [2024-11-28 02:30:02,419 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 177 predicate places. [2024-11-28 02:30:02,419 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 215 transitions, 2083 flow [2024-11-28 02:30:02,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 28.375) internal successors, (908), 32 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:02,419 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:02,419 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:02,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:02,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 02:30:02,620 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:30:02,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1325840579, now seen corresponding path program 1 times [2024-11-28 02:30:02,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:02,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273352160] [2024-11-28 02:30:02,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:02,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:30:03,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273352160] [2024-11-28 02:30:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273352160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662537035] [2024-11-28 02:30:03,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:03,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:03,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:03,108 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:03,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:30:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:03,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:30:03,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:03,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:30:03,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:30:03,322 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:30:03,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:30:03,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:30:03,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:30:03,498 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 19 treesize of output 7 [2024-11-28 02:30:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:30:03,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:03,627 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_491 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_491) c_~a1~0.base) (+ c_~a1~0.offset 4)) 9223372039002259456)) is different from false [2024-11-28 02:30:03,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:03,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-28 02:30:03,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:03,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-11-28 02:30:03,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:30:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-28 02:30:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662537035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:03,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:03,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-11-28 02:30:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357479054] [2024-11-28 02:30:03,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:03,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:30:03,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:03,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:30:03,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=772, Unknown=1, NotChecked=56, Total=930 [2024-11-28 02:30:03,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-28 02:30:03,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 215 transitions, 2083 flow. Second operand has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:03,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:03,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-28 02:30:03,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:08,273 INFO L124 PetriNetUnfolderBase]: 11542/20087 cut-off events. [2024-11-28 02:30:08,273 INFO L125 PetriNetUnfolderBase]: For 102186/105202 co-relation queries the response was YES. [2024-11-28 02:30:08,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79824 conditions, 20087 events. 11542/20087 cut-off events. For 102186/105202 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 159627 event pairs, 2104 based on Foata normal form. 1065/20406 useless extension candidates. Maximal degree in co-relation 79760. Up to 4351 conditions per place. [2024-11-28 02:30:08,471 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 460 selfloop transitions, 52 changer transitions 40/587 dead transitions. [2024-11-28 02:30:08,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 587 transitions, 6505 flow [2024-11-28 02:30:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:30:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 02:30:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 834 transitions. [2024-11-28 02:30:08,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-11-28 02:30:08,473 INFO L175 Difference]: Start difference. First operand has 256 places, 215 transitions, 2083 flow. Second operand 21 states and 834 transitions. [2024-11-28 02:30:08,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 587 transitions, 6505 flow [2024-11-28 02:30:08,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 587 transitions, 6208 flow, removed 30 selfloop flow, removed 16 redundant places. [2024-11-28 02:30:09,038 INFO L231 Difference]: Finished difference. Result has 263 places, 222 transitions, 2185 flow [2024-11-28 02:30:09,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2185, PETRI_PLACES=263, PETRI_TRANSITIONS=222} [2024-11-28 02:30:09,039 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 184 predicate places. [2024-11-28 02:30:09,039 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 222 transitions, 2185 flow [2024-11-28 02:30:09,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:09,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:09,040 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:09,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:09,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 02:30:09,240 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:30:09,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:09,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1848584076, now seen corresponding path program 1 times [2024-11-28 02:30:09,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:09,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309158957] [2024-11-28 02:30:09,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:09,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:30:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:09,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309158957] [2024-11-28 02:30:09,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309158957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:09,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253939912] [2024-11-28 02:30:09,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:09,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:09,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:09,647 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:09,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:30:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:09,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:30:09,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:09,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:30:09,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:30:09,865 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:30:09,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:30:09,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 02:30:09,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 02:30:10,012 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 21 treesize of output 9 [2024-11-28 02:30:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:30:10,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:10,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:10,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-28 02:30:10,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:10,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2024-11-28 02:30:10,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:30:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:30:10,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253939912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:10,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:10,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-11-28 02:30:10,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001517778] [2024-11-28 02:30:10,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:10,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:30:10,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:10,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:30:10,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=820, Unknown=7, NotChecked=0, Total=930 [2024-11-28 02:30:10,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-28 02:30:10,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 222 transitions, 2185 flow. Second operand has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:10,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:10,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-28 02:30:10,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:15,654 INFO L124 PetriNetUnfolderBase]: 11398/19858 cut-off events. [2024-11-28 02:30:15,654 INFO L125 PetriNetUnfolderBase]: For 97771/100605 co-relation queries the response was YES. [2024-11-28 02:30:15,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79862 conditions, 19858 events. 11398/19858 cut-off events. For 97771/100605 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 157601 event pairs, 2600 based on Foata normal form. 1051/20169 useless extension candidates. Maximal degree in co-relation 79795. Up to 5256 conditions per place. [2024-11-28 02:30:15,813 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 436 selfloop transitions, 48 changer transitions 20/539 dead transitions. [2024-11-28 02:30:15,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 539 transitions, 5852 flow [2024-11-28 02:30:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:30:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:30:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 779 transitions. [2024-11-28 02:30:15,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45290697674418606 [2024-11-28 02:30:15,814 INFO L175 Difference]: Start difference. First operand has 263 places, 222 transitions, 2185 flow. Second operand 20 states and 779 transitions. [2024-11-28 02:30:15,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 539 transitions, 5852 flow [2024-11-28 02:30:16,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 539 transitions, 5747 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-11-28 02:30:16,123 INFO L231 Difference]: Finished difference. Result has 267 places, 222 transitions, 2217 flow [2024-11-28 02:30:16,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2217, PETRI_PLACES=267, PETRI_TRANSITIONS=222} [2024-11-28 02:30:16,124 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 188 predicate places. [2024-11-28 02:30:16,124 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 222 transitions, 2217 flow [2024-11-28 02:30:16,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:16,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:16,124 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:16,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:30:16,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 02:30:16,325 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:30:16,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -913290187, now seen corresponding path program 2 times [2024-11-28 02:30:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:16,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45097895] [2024-11-28 02:30:16,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:16,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:16,334 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:30:16,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:30:16,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:16,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45097895] [2024-11-28 02:30:16,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45097895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:16,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835143425] [2024-11-28 02:30:16,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:16,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:16,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:16,362 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:16,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:30:16,465 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:30:16,465 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:16,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:30:16,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:30:16,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:30:16,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835143425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:16,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:16,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 02:30:16,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963276721] [2024-11-28 02:30:16,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:16,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:30:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:16,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:30:16,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:30:16,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-28 02:30:16,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 222 transitions, 2217 flow. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:16,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:16,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-28 02:30:16,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:18,950 INFO L124 PetriNetUnfolderBase]: 7294/16577 cut-off events. [2024-11-28 02:30:18,950 INFO L125 PetriNetUnfolderBase]: For 79093/79872 co-relation queries the response was YES. [2024-11-28 02:30:19,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64819 conditions, 16577 events. 7294/16577 cut-off events. For 79093/79872 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 162457 event pairs, 1789 based on Foata normal form. 467/16413 useless extension candidates. Maximal degree in co-relation 64752. Up to 8806 conditions per place. [2024-11-28 02:30:19,081 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 246 selfloop transitions, 9 changer transitions 0/305 dead transitions. [2024-11-28 02:30:19,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 305 transitions, 3430 flow [2024-11-28 02:30:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:30:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:30:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 295 transitions. [2024-11-28 02:30:19,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.686046511627907 [2024-11-28 02:30:19,082 INFO L175 Difference]: Start difference. First operand has 267 places, 222 transitions, 2217 flow. Second operand 5 states and 295 transitions. [2024-11-28 02:30:19,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 305 transitions, 3430 flow [2024-11-28 02:30:19,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 305 transitions, 3299 flow, removed 2 selfloop flow, removed 17 redundant places. [2024-11-28 02:30:19,438 INFO L231 Difference]: Finished difference. Result has 254 places, 222 transitions, 2142 flow [2024-11-28 02:30:19,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2142, PETRI_PLACES=254, PETRI_TRANSITIONS=222} [2024-11-28 02:30:19,438 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 175 predicate places. [2024-11-28 02:30:19,439 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 222 transitions, 2142 flow [2024-11-28 02:30:19,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:19,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:19,439 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:19,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:19,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 02:30:19,639 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:30:19,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash 4199128, now seen corresponding path program 1 times [2024-11-28 02:30:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:19,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83211612] [2024-11-28 02:30:19,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:19,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:30:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:20,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83211612] [2024-11-28 02:30:20,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83211612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:20,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153566262] [2024-11-28 02:30:20,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:20,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:20,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:20,280 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:20,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:30:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:20,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:30:20,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:20,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:30:20,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:30:20,629 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:30:20,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:30:20,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:30:20,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:30:20,915 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 19 treesize of output 7 [2024-11-28 02:30:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:30:20,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:21,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:21,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-28 02:30:21,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:21,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-11-28 02:30:21,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:30:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:30:21,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153566262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:21,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:21,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-28 02:30:21,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257535470] [2024-11-28 02:30:21,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:21,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 02:30:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:21,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 02:30:21,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=945, Unknown=8, NotChecked=0, Total=1056 [2024-11-28 02:30:21,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-28 02:30:21,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 222 transitions, 2142 flow. Second operand has 33 states, 33 states have (on average 28.363636363636363) internal successors, (936), 33 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:21,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:21,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-28 02:30:21,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:27,545 INFO L124 PetriNetUnfolderBase]: 12871/22766 cut-off events. [2024-11-28 02:30:27,546 INFO L125 PetriNetUnfolderBase]: For 103106/104912 co-relation queries the response was YES. [2024-11-28 02:30:27,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90815 conditions, 22766 events. 12871/22766 cut-off events. For 103106/104912 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 187342 event pairs, 3913 based on Foata normal form. 1144/23245 useless extension candidates. Maximal degree in co-relation 90749. Up to 5581 conditions per place. [2024-11-28 02:30:27,753 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 541 selfloop transitions, 56 changer transitions 144/770 dead transitions. [2024-11-28 02:30:27,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 770 transitions, 8070 flow [2024-11-28 02:30:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:30:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 02:30:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1006 transitions. [2024-11-28 02:30:27,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44991055456171736 [2024-11-28 02:30:27,756 INFO L175 Difference]: Start difference. First operand has 254 places, 222 transitions, 2142 flow. Second operand 26 states and 1006 transitions. [2024-11-28 02:30:27,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 770 transitions, 8070 flow [2024-11-28 02:30:28,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 770 transitions, 8057 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:30:28,162 INFO L231 Difference]: Finished difference. Result has 280 places, 226 transitions, 2293 flow [2024-11-28 02:30:28,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2293, PETRI_PLACES=280, PETRI_TRANSITIONS=226} [2024-11-28 02:30:28,162 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 201 predicate places. [2024-11-28 02:30:28,162 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 226 transitions, 2293 flow [2024-11-28 02:30:28,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 28.363636363636363) internal successors, (936), 33 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:28,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:28,163 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:28,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:30:28,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 02:30:28,363 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:30:28,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1752807886, now seen corresponding path program 2 times [2024-11-28 02:30:28,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:28,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15139602] [2024-11-28 02:30:28,364 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:28,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:28,381 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:30:28,382 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:30:28,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:28,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15139602] [2024-11-28 02:30:28,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15139602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:28,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198729075] [2024-11-28 02:30:28,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:28,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:28,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:28,626 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:28,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:30:28,759 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:30:28,759 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:28,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:30:28,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:30:28,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:30:29,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198729075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:29,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:29,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-28 02:30:29,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626180631] [2024-11-28 02:30:29,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:29,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 02:30:29,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:29,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 02:30:29,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:30:29,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:30:29,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 226 transitions, 2293 flow. Second operand has 30 states, 30 states have (on average 41.53333333333333) internal successors, (1246), 30 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:29,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:29,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:30:29,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:34,952 INFO L124 PetriNetUnfolderBase]: 12558/27759 cut-off events. [2024-11-28 02:30:34,952 INFO L125 PetriNetUnfolderBase]: For 144739/146484 co-relation queries the response was YES. [2024-11-28 02:30:35,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111994 conditions, 27759 events. 12558/27759 cut-off events. For 144739/146484 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 287144 event pairs, 5692 based on Foata normal form. 933/28071 useless extension candidates. Maximal degree in co-relation 111923. Up to 11297 conditions per place. [2024-11-28 02:30:35,173 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 323 selfloop transitions, 57 changer transitions 108/539 dead transitions. [2024-11-28 02:30:35,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 539 transitions, 6192 flow [2024-11-28 02:30:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:30:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 02:30:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 945 transitions. [2024-11-28 02:30:35,175 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5783353733170135 [2024-11-28 02:30:35,175 INFO L175 Difference]: Start difference. First operand has 280 places, 226 transitions, 2293 flow. Second operand 19 states and 945 transitions. [2024-11-28 02:30:35,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 539 transitions, 6192 flow [2024-11-28 02:30:35,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 539 transitions, 6020 flow, removed 6 selfloop flow, removed 21 redundant places. [2024-11-28 02:30:35,945 INFO L231 Difference]: Finished difference. Result has 287 places, 255 transitions, 2815 flow [2024-11-28 02:30:35,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2815, PETRI_PLACES=287, PETRI_TRANSITIONS=255} [2024-11-28 02:30:35,946 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 208 predicate places. [2024-11-28 02:30:35,946 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 255 transitions, 2815 flow [2024-11-28 02:30:35,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 41.53333333333333) internal successors, (1246), 30 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:35,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:35,947 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:35,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 02:30:36,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 02:30:36,148 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:30:36,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:36,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1471531327, now seen corresponding path program 1 times [2024-11-28 02:30:36,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:36,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242469481] [2024-11-28 02:30:36,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242469481] [2024-11-28 02:30:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242469481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038914124] [2024-11-28 02:30:36,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:36,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:36,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:36,554 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:36,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:30:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:36,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:30:36,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:36,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:30:36,923 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 21 treesize of output 9 [2024-11-28 02:30:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:30:36,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:37,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 02:30:37,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-28 02:30:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:30:37,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038914124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:37,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:37,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-28 02:30:37,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398886849] [2024-11-28 02:30:37,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:37,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:30:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:37,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:30:37,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:30:37,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-28 02:30:37,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 255 transitions, 2815 flow. Second operand has 26 states, 26 states have (on average 33.11538461538461) internal successors, (861), 26 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:37,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:37,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-28 02:30:37,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:44,566 INFO L124 PetriNetUnfolderBase]: 18918/34801 cut-off events. [2024-11-28 02:30:44,566 INFO L125 PetriNetUnfolderBase]: For 185117/188037 co-relation queries the response was YES. [2024-11-28 02:30:44,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140992 conditions, 34801 events. 18918/34801 cut-off events. For 185117/188037 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 314859 event pairs, 3813 based on Foata normal form. 1396/35653 useless extension candidates. Maximal degree in co-relation 140912. Up to 7729 conditions per place. [2024-11-28 02:30:44,912 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 699 selfloop transitions, 64 changer transitions 62/864 dead transitions. [2024-11-28 02:30:44,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 864 transitions, 10549 flow [2024-11-28 02:30:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:30:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:30:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 898 transitions. [2024-11-28 02:30:44,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.522093023255814 [2024-11-28 02:30:44,914 INFO L175 Difference]: Start difference. First operand has 287 places, 255 transitions, 2815 flow. Second operand 20 states and 898 transitions. [2024-11-28 02:30:44,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 864 transitions, 10549 flow [2024-11-28 02:30:46,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 864 transitions, 10533 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-28 02:30:46,266 INFO L231 Difference]: Finished difference. Result has 305 places, 261 transitions, 3006 flow [2024-11-28 02:30:46,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3006, PETRI_PLACES=305, PETRI_TRANSITIONS=261} [2024-11-28 02:30:46,267 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 226 predicate places. [2024-11-28 02:30:46,267 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 261 transitions, 3006 flow [2024-11-28 02:30:46,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 33.11538461538461) internal successors, (861), 26 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:46,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:46,267 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:46,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:46,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-28 02:30:46,468 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:30:46,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1750309708, now seen corresponding path program 2 times [2024-11-28 02:30:46,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:46,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549711697] [2024-11-28 02:30:46,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:46,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:46,480 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:30:46,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:30:46,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549711697] [2024-11-28 02:30:46,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549711697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169690746] [2024-11-28 02:30:46,509 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:46,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:46,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:46,511 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:46,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 02:30:46,620 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:30:46,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:46,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:30:46,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:30:46,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:30:46,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169690746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:46,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:46,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 02:30:46,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475365476] [2024-11-28 02:30:46,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:46,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:30:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:46,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:30:46,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:30:46,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:30:46,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 261 transitions, 3006 flow. Second operand has 6 states, 6 states have (on average 45.666666666666664) internal successors, (274), 6 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:46,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:46,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:30:46,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:51,993 INFO L124 PetriNetUnfolderBase]: 13288/29705 cut-off events. [2024-11-28 02:30:51,993 INFO L125 PetriNetUnfolderBase]: For 170396/172254 co-relation queries the response was YES. [2024-11-28 02:30:52,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123143 conditions, 29705 events. 13288/29705 cut-off events. For 170396/172254 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 312549 event pairs, 1662 based on Foata normal form. 843/30012 useless extension candidates. Maximal degree in co-relation 123057. Up to 16205 conditions per place. [2024-11-28 02:30:52,295 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 297 selfloop transitions, 9 changer transitions 0/361 dead transitions. [2024-11-28 02:30:52,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 361 transitions, 4616 flow [2024-11-28 02:30:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:30:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:30:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 272 transitions. [2024-11-28 02:30:52,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2024-11-28 02:30:52,297 INFO L175 Difference]: Start difference. First operand has 305 places, 261 transitions, 3006 flow. Second operand 5 states and 272 transitions. [2024-11-28 02:30:52,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 361 transitions, 4616 flow [2024-11-28 02:30:53,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 361 transitions, 4507 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-28 02:30:53,868 INFO L231 Difference]: Finished difference. Result has 296 places, 261 transitions, 2919 flow [2024-11-28 02:30:53,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2919, PETRI_PLACES=296, PETRI_TRANSITIONS=261} [2024-11-28 02:30:53,868 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 217 predicate places. [2024-11-28 02:30:53,868 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 261 transitions, 2919 flow [2024-11-28 02:30:53,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.666666666666664) internal successors, (274), 6 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:53,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:53,869 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:53,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 02:30:54,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-28 02:30:54,069 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:30:54,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1627168273, now seen corresponding path program 1 times [2024-11-28 02:30:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393161868] [2024-11-28 02:30:54,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:54,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393161868] [2024-11-28 02:30:54,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393161868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683959774] [2024-11-28 02:30:54,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:54,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:54,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:54,666 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:54,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 02:30:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:54,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:30:54,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:54,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:30:54,978 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 19 treesize of output 7 [2024-11-28 02:30:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:30:55,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:55,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 02:30:55,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-28 02:30:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:30:55,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683959774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:55,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:55,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-28 02:30:55,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988723294] [2024-11-28 02:30:55,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:55,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:30:55,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:55,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:30:55,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:30:55,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-28 02:30:55,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 261 transitions, 2919 flow. Second operand has 27 states, 27 states have (on average 34.03703703703704) internal successors, (919), 27 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:55,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:55,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-28 02:30:55,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:02,684 INFO L124 PetriNetUnfolderBase]: 18058/34167 cut-off events. [2024-11-28 02:31:02,684 INFO L125 PetriNetUnfolderBase]: For 204588/207361 co-relation queries the response was YES. [2024-11-28 02:31:03,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143850 conditions, 34167 events. 18058/34167 cut-off events. For 204588/207361 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 317251 event pairs, 4530 based on Foata normal form. 1355/35453 useless extension candidates. Maximal degree in co-relation 143764. Up to 8854 conditions per place. [2024-11-28 02:31:03,422 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 553 selfloop transitions, 61 changer transitions 248/907 dead transitions. [2024-11-28 02:31:03,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 907 transitions, 11163 flow [2024-11-28 02:31:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:31:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 02:31:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 956 transitions. [2024-11-28 02:31:03,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5293466223698782 [2024-11-28 02:31:03,424 INFO L175 Difference]: Start difference. First operand has 296 places, 261 transitions, 2919 flow. Second operand 21 states and 956 transitions. [2024-11-28 02:31:03,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 907 transitions, 11163 flow [2024-11-28 02:31:04,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 907 transitions, 11144 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 02:31:04,543 INFO L231 Difference]: Finished difference. Result has 316 places, 265 transitions, 3074 flow [2024-11-28 02:31:04,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3074, PETRI_PLACES=316, PETRI_TRANSITIONS=265} [2024-11-28 02:31:04,543 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 237 predicate places. [2024-11-28 02:31:04,544 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 265 transitions, 3074 flow [2024-11-28 02:31:04,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 34.03703703703704) internal successors, (919), 27 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:04,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:04,544 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:04,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 02:31:04,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:04,744 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:31:04,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1574941257, now seen corresponding path program 2 times [2024-11-28 02:31:04,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:04,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460826718] [2024-11-28 02:31:04,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:04,757 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:04,757 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:31:04,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:04,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460826718] [2024-11-28 02:31:04,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460826718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:04,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711038423] [2024-11-28 02:31:04,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:04,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:04,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:04,921 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:04,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 02:31:05,041 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:05,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:05,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:31:05,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:31:05,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:31:05,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711038423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:05,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:05,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-28 02:31:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872595687] [2024-11-28 02:31:05,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:05,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 02:31:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:05,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 02:31:05,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:31:05,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:31:05,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 265 transitions, 3074 flow. Second operand has 30 states, 30 states have (on average 41.6) internal successors, (1248), 30 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:05,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:05,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:31:05,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:12,012 INFO L124 PetriNetUnfolderBase]: 11746/26092 cut-off events. [2024-11-28 02:31:12,013 INFO L125 PetriNetUnfolderBase]: For 160820/162030 co-relation queries the response was YES. [2024-11-28 02:31:12,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112181 conditions, 26092 events. 11746/26092 cut-off events. For 160820/162030 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 266344 event pairs, 6300 based on Foata normal form. 603/26568 useless extension candidates. Maximal degree in co-relation 112091. Up to 12103 conditions per place. [2024-11-28 02:31:12,268 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 154 selfloop transitions, 52 changer transitions 238/500 dead transitions. [2024-11-28 02:31:12,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 500 transitions, 6331 flow [2024-11-28 02:31:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:31:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 02:31:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 938 transitions. [2024-11-28 02:31:12,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740514075887393 [2024-11-28 02:31:12,270 INFO L175 Difference]: Start difference. First operand has 316 places, 265 transitions, 3074 flow. Second operand 19 states and 938 transitions. [2024-11-28 02:31:12,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 500 transitions, 6331 flow [2024-11-28 02:31:13,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 500 transitions, 6157 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-11-28 02:31:13,163 INFO L231 Difference]: Finished difference. Result has 324 places, 260 transitions, 2964 flow [2024-11-28 02:31:13,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2964, PETRI_PLACES=324, PETRI_TRANSITIONS=260} [2024-11-28 02:31:13,163 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 245 predicate places. [2024-11-28 02:31:13,164 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 260 transitions, 2964 flow [2024-11-28 02:31:13,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 41.6) internal successors, (1248), 30 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:13,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:13,164 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:13,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 02:31:13,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:13,369 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-28 02:31:13,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -936837742, now seen corresponding path program 3 times [2024-11-28 02:31:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:13,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081393696] [2024-11-28 02:31:13,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:13,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:13,390 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:31:13,390 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:31:13,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:13,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081393696] [2024-11-28 02:31:13,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081393696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:13,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756448584] [2024-11-28 02:31:13,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:13,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:13,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:13,547 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:13,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd64eb4-3d95-4aff-9390-338992d59bf4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 02:31:13,668 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:31:13,668 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:13,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:31:13,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:31:13,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:31:14,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756448584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:14,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2024-11-28 02:31:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204138007] [2024-11-28 02:31:14,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:14,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 02:31:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:14,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 02:31:14,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:31:14,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-28 02:31:14,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 260 transitions, 2964 flow. Second operand has 30 states, 30 states have (on average 41.53333333333333) internal successors, (1246), 30 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:14,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:14,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-28 02:31:14,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand