./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --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_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/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_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/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_655fb92e-fb48-46e3-817b-7772c21319dd/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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:36,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:36,393 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:07:36,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:36,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:36,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:36,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:36,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:36,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:36,437 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:36,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:36,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:36,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:36,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:36,439 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:36,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:36,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:07:36,440 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:36,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:36,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:36,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:36,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:07:36,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:36,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:07:36,441 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:07:36,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:07:36,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:36,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:07:36,442 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:36,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:36,442 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:36,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:36,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:36,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:36,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:36,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:36,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:36,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:36,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:36,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:36,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:36,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:36,445 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_655fb92e-fb48-46e3-817b-7772c21319dd/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 -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2024-11-28 02:07:36,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:36,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:36,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:36,762 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:36,762 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:36,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/stack_longest-2.i [2024-11-28 02:07:39,872 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/data/52c253bc8/9496b3b135104a1f91af1311bb702227/FLAG475bc80f2 [2024-11-28 02:07:40,204 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:40,209 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/sv-benchmarks/c/pthread/stack_longest-2.i [2024-11-28 02:07:40,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/data/52c253bc8/9496b3b135104a1f91af1311bb702227/FLAG475bc80f2 [2024-11-28 02:07:40,254 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/data/52c253bc8/9496b3b135104a1f91af1311bb702227 [2024-11-28 02:07:40,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:40,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:40,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:40,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:40,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:40,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:40" (1/1) ... [2024-11-28 02:07:40,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed38602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:40, skipping insertion in model container [2024-11-28 02:07:40,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:40" (1/1) ... [2024-11-28 02:07:40,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:40,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:40,785 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:40,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:41,004 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:41,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41 WrapperNode [2024-11-28 02:07:41,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:41,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:41,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:41,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:41,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,117 INFO L138 Inliner]: procedures = 277, calls = 831, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 955 [2024-11-28 02:07:41,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:41,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:41,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:41,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:41,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,196 INFO L175 MemorySlicer]: Split 809 memory accesses to 3 slices as follows [2, 802, 5]. 99 percent of accesses are in the largest equivalence class. The 807 initializations are split as follows [2, 800, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-11-28 02:07:41,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,229 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:41,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:41,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:41,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:41,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (1/1) ... [2024-11-28 02:07:41,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:41,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:41,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:41,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 02:07:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 02:07:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 02:07:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 02:07:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:07:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:07:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:07:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:07:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:41,354 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 02:07:41,484 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:41,485 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:43,288 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:07:43,289 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:59,358 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:59,363 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:07:59,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:59 BoogieIcfgContainer [2024-11-28 02:07:59,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:59,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:59,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:59,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:59,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:40" (1/3) ... [2024-11-28 02:07:59,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca38ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:59, skipping insertion in model container [2024-11-28 02:07:59,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:41" (2/3) ... [2024-11-28 02:07:59,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca38ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:59, skipping insertion in model container [2024-11-28 02:07:59,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:59" (3/3) ... [2024-11-28 02:07:59,383 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2024-11-28 02:07:59,403 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:59,405 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longest-2.i that has 3 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-28 02:07:59,406 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:07:59,537 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:07:59,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-28 02:07:59,693 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-28 02:07:59,698 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:07:59,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 123 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-28 02:07:59,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-28 02:07:59,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-28 02:07:59,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:59,744 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;@792d5485, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:59,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-28 02:07:59,806 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:59,806 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-28 02:07:59,807 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:07:59,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:59,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:59,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:07:59,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash 268891961, now seen corresponding path program 1 times [2024-11-28 02:07:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:59,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180531662] [2024-11-28 02:07:59,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:59,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:00,992 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 02:08:00,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:00,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180531662] [2024-11-28 02:08:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180531662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:00,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:08:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654585108] [2024-11-28 02:08:00,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:01,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:08:01,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:01,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:08:01,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:08:01,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 02:08:01,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 02:08:01,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:01,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 02:08:01,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:01,755 INFO L124 PetriNetUnfolderBase]: 730/1442 cut-off events. [2024-11-28 02:08:01,755 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-28 02:08:01,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1442 events. 730/1442 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7617 event pairs, 224 based on Foata normal form. 40/1333 useless extension candidates. Maximal degree in co-relation 2569. Up to 692 conditions per place. [2024-11-28 02:08:01,781 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-28 02:08:01,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 298 flow [2024-11-28 02:08:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:08:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-28 02:08:01,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-28 02:08:01,805 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 132 transitions. [2024-11-28 02:08:01,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 298 flow [2024-11-28 02:08:01,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:08:01,821 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 128 flow [2024-11-28 02:08:01,824 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-11-28 02:08:01,830 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-28 02:08:01,830 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 128 flow [2024-11-28 02:08:01,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 02:08:01,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:01,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:01,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:08:01,831 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:01,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2127006073, now seen corresponding path program 1 times [2024-11-28 02:08:01,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:01,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580946177] [2024-11-28 02:08:01,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:01,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:02,341 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 02:08:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580946177] [2024-11-28 02:08:02,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580946177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:02,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:02,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885917205] [2024-11-28 02:08:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:02,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:08:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:02,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:08:02,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:08:02,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 02:08:02,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 02:08:02,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:02,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 02:08:02,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:03,089 INFO L124 PetriNetUnfolderBase]: 1180/2391 cut-off events. [2024-11-28 02:08:03,089 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-11-28 02:08:03,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 2391 events. 1180/2391 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13808 event pairs, 613 based on Foata normal form. 74/2301 useless extension candidates. Maximal degree in co-relation 4166. Up to 1299 conditions per place. [2024-11-28 02:08:03,116 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-28 02:08:03,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 399 flow [2024-11-28 02:08:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:08:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-28 02:08:03,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-28 02:08:03,119 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 128 flow. Second operand 4 states and 132 transitions. [2024-11-28 02:08:03,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 399 flow [2024-11-28 02:08:03,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:08:03,125 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 152 flow [2024-11-28 02:08:03,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-11-28 02:08:03,127 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-11-28 02:08:03,127 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 152 flow [2024-11-28 02:08:03,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 02:08:03,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:03,130 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:03,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:08:03,130 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:03,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1468103358, now seen corresponding path program 1 times [2024-11-28 02:08:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163312755] [2024-11-28 02:08:03,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:03,614 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 02:08:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163312755] [2024-11-28 02:08:03,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163312755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:03,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:03,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673399605] [2024-11-28 02:08:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:03,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:08:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:03,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:08:03,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:08:03,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 02:08:03,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 02:08:03,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:03,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 02:08:03,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:04,477 INFO L124 PetriNetUnfolderBase]: 1703/3326 cut-off events. [2024-11-28 02:08:04,478 INFO L125 PetriNetUnfolderBase]: For 993/1035 co-relation queries the response was YES. [2024-11-28 02:08:04,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7360 conditions, 3326 events. 1703/3326 cut-off events. For 993/1035 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21199 event pairs, 837 based on Foata normal form. 82/3289 useless extension candidates. Maximal degree in co-relation 5256. Up to 1936 conditions per place. [2024-11-28 02:08:04,513 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-11-28 02:08:04,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 439 flow [2024-11-28 02:08:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:08:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-28 02:08:04,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-11-28 02:08:04,518 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 152 flow. Second operand 4 states and 133 transitions. [2024-11-28 02:08:04,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 439 flow [2024-11-28 02:08:04,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:08:04,525 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-11-28 02:08:04,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-28 02:08:04,529 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-28 02:08:04,529 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-11-28 02:08:04,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 02:08:04,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:04,530 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 02:08:04,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:08:04,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:04,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1598538231, now seen corresponding path program 1 times [2024-11-28 02:08:04,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:04,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765016617] [2024-11-28 02:08:04,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:05,289 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 02:08:05,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:05,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765016617] [2024-11-28 02:08:05,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765016617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:05,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:05,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:05,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442231845] [2024-11-28 02:08:05,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:05,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:05,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:05,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:05,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:05,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 02:08:05,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 02:08:05,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:05,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 02:08:05,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:05,678 INFO L124 PetriNetUnfolderBase]: 898/2004 cut-off events. [2024-11-28 02:08:05,679 INFO L125 PetriNetUnfolderBase]: For 975/1071 co-relation queries the response was YES. [2024-11-28 02:08:05,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2004 events. 898/2004 cut-off events. For 975/1071 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11990 event pairs, 285 based on Foata normal form. 76/2031 useless extension candidates. Maximal degree in co-relation 3693. Up to 946 conditions per place. [2024-11-28 02:08:05,696 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-28 02:08:05,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 334 flow [2024-11-28 02:08:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:08:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-28 02:08:05,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:08:05,699 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 96 transitions. [2024-11-28 02:08:05,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 334 flow [2024-11-28 02:08:05,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:08:05,710 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 173 flow [2024-11-28 02:08:05,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-28 02:08:05,711 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-28 02:08:05,711 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 173 flow [2024-11-28 02:08:05,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 02:08:05,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:05,712 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:05,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:08:05,712 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:05,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 818367858, now seen corresponding path program 1 times [2024-11-28 02:08:05,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:05,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615697660] [2024-11-28 02:08:05,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:05,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:06,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615697660] [2024-11-28 02:08:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615697660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431441609] [2024-11-28 02:08:06,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:06,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:06,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:06,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:08:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:06,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 1763 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:08:06,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:06,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:08:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431441609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:06,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:08:06,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:08:06,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458356680] [2024-11-28 02:08:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:06,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:08:06,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:06,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:08:06,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:08:06,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:06,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 02:08:06,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:06,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:06,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:07,314 INFO L124 PetriNetUnfolderBase]: 931/2021 cut-off events. [2024-11-28 02:08:07,315 INFO L125 PetriNetUnfolderBase]: For 1020/1126 co-relation queries the response was YES. [2024-11-28 02:08:07,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4989 conditions, 2021 events. 931/2021 cut-off events. For 1020/1126 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11534 event pairs, 189 based on Foata normal form. 70/2038 useless extension candidates. Maximal degree in co-relation 2706. Up to 735 conditions per place. [2024-11-28 02:08:07,333 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-11-28 02:08:07,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 587 flow [2024-11-28 02:08:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:08:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:08:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-28 02:08:07,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-28 02:08:07,335 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 173 flow. Second operand 7 states and 188 transitions. [2024-11-28 02:08:07,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 587 flow [2024-11-28 02:08:07,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:08:07,341 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 229 flow [2024-11-28 02:08:07,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-28 02:08:07,342 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-11-28 02:08:07,342 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 229 flow [2024-11-28 02:08:07,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 02:08:07,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:07,343 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 02:08:07,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:08:07,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:07,548 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:07,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 361058970, now seen corresponding path program 1 times [2024-11-28 02:08:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157224395] [2024-11-28 02:08:07,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:07,781 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 02:08:07,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157224395] [2024-11-28 02:08:07,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157224395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:07,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861460003] [2024-11-28 02:08:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:07,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:08:07,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:07,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:08:07,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:08:07,793 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:07,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:07,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:07,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:07,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:08,301 INFO L124 PetriNetUnfolderBase]: 1173/2610 cut-off events. [2024-11-28 02:08:08,301 INFO L125 PetriNetUnfolderBase]: For 2091/2209 co-relation queries the response was YES. [2024-11-28 02:08:08,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6748 conditions, 2610 events. 1173/2610 cut-off events. For 2091/2209 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16507 event pairs, 646 based on Foata normal form. 26/2633 useless extension candidates. Maximal degree in co-relation 5215. Up to 1363 conditions per place. [2024-11-28 02:08:08,326 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 63 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-11-28 02:08:08,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 494 flow [2024-11-28 02:08:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:08:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-28 02:08:08,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-11-28 02:08:08,330 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 229 flow. Second operand 4 states and 115 transitions. [2024-11-28 02:08:08,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 494 flow [2024-11-28 02:08:08,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 02:08:08,343 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 271 flow [2024-11-28 02:08:08,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-11-28 02:08:08,344 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-11-28 02:08:08,345 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 271 flow [2024-11-28 02:08:08,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:08,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:08,346 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:08,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:08:08,346 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:08,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1627101809, now seen corresponding path program 1 times [2024-11-28 02:08:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:08,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321755388] [2024-11-28 02:08:08,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:08,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321755388] [2024-11-28 02:08:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321755388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:08,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702689104] [2024-11-28 02:08:08,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:08,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:08,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:08:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:09,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:08:09,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:09,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:08:09,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702689104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:09,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:08:09,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 02:08:09,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617790476] [2024-11-28 02:08:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:09,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:08:09,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:09,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:08:09,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:08:09,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:09,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 02:08:09,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:09,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:09,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:09,801 INFO L124 PetriNetUnfolderBase]: 1483/2948 cut-off events. [2024-11-28 02:08:09,801 INFO L125 PetriNetUnfolderBase]: For 3260/3346 co-relation queries the response was YES. [2024-11-28 02:08:09,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8046 conditions, 2948 events. 1483/2948 cut-off events. For 3260/3346 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17423 event pairs, 245 based on Foata normal form. 79/2946 useless extension candidates. Maximal degree in co-relation 6189. Up to 1306 conditions per place. [2024-11-28 02:08:09,828 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 78 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-11-28 02:08:09,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 653 flow [2024-11-28 02:08:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:08:09,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-28 02:08:09,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 02:08:09,830 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 271 flow. Second operand 4 states and 116 transitions. [2024-11-28 02:08:09,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 653 flow [2024-11-28 02:08:09,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:08:09,842 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 275 flow [2024-11-28 02:08:09,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-28 02:08:09,844 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-28 02:08:09,845 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 275 flow [2024-11-28 02:08:09,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 02:08:09,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:09,846 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:09,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:10,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:08:10,047 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:10,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -400398112, now seen corresponding path program 1 times [2024-11-28 02:08:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:10,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175415893] [2024-11-28 02:08:10,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:10,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:10,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175415893] [2024-11-28 02:08:10,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175415893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:10,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591242112] [2024-11-28 02:08:10,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:10,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:10,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:10,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:10,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:08:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:10,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:08:10,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:10,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:10,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591242112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:10,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:10,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 02:08:10,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623312782] [2024-11-28 02:08:10,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:10,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:08:10,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:10,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:08:10,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:08:10,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:10,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 02:08:10,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:10,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:10,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:12,297 INFO L124 PetriNetUnfolderBase]: 2547/5453 cut-off events. [2024-11-28 02:08:12,297 INFO L125 PetriNetUnfolderBase]: For 8862/9108 co-relation queries the response was YES. [2024-11-28 02:08:12,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15524 conditions, 5453 events. 2547/5453 cut-off events. For 8862/9108 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35122 event pairs, 407 based on Foata normal form. 151/5603 useless extension candidates. Maximal degree in co-relation 8199. Up to 1167 conditions per place. [2024-11-28 02:08:12,355 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 191 selfloop transitions, 33 changer transitions 0/235 dead transitions. [2024-11-28 02:08:12,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 235 transitions, 1624 flow [2024-11-28 02:08:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:08:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 02:08:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 426 transitions. [2024-11-28 02:08:12,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-11-28 02:08:12,358 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 275 flow. Second operand 16 states and 426 transitions. [2024-11-28 02:08:12,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 235 transitions, 1624 flow [2024-11-28 02:08:12,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 235 transitions, 1502 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 02:08:12,377 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 594 flow [2024-11-28 02:08:12,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=594, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2024-11-28 02:08:12,377 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-11-28 02:08:12,378 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 594 flow [2024-11-28 02:08:12,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 02:08:12,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:12,378 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 02:08:12,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:08:12,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:12,582 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:12,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash -713567869, now seen corresponding path program 1 times [2024-11-28 02:08:12,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:12,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663789556] [2024-11-28 02:08:12,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:12,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:12,885 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 02:08:12,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663789556] [2024-11-28 02:08:12,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663789556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:12,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:12,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:08:12,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753489470] [2024-11-28 02:08:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:12,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:08:12,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:12,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:08:12,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:08:12,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:08:12,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 02:08:12,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:12,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:08:12,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:13,970 INFO L124 PetriNetUnfolderBase]: 2796/5814 cut-off events. [2024-11-28 02:08:13,970 INFO L125 PetriNetUnfolderBase]: For 9962/10299 co-relation queries the response was YES. [2024-11-28 02:08:14,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16746 conditions, 5814 events. 2796/5814 cut-off events. For 9962/10299 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 37189 event pairs, 564 based on Foata normal form. 39/5852 useless extension candidates. Maximal degree in co-relation 13956. Up to 3403 conditions per place. [2024-11-28 02:08:14,030 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 119 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2024-11-28 02:08:14,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1117 flow [2024-11-28 02:08:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:08:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:08:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-11-28 02:08:14,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-11-28 02:08:14,032 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 594 flow. Second operand 6 states and 163 transitions. [2024-11-28 02:08:14,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1117 flow [2024-11-28 02:08:14,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1075 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-11-28 02:08:14,053 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 653 flow [2024-11-28 02:08:14,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-28 02:08:14,054 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-11-28 02:08:14,054 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 653 flow [2024-11-28 02:08:14,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 02:08:14,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:14,054 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:14,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:08:14,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:14,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:14,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1099453564, now seen corresponding path program 1 times [2024-11-28 02:08:14,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:14,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982551091] [2024-11-28 02:08:14,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:08:14,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:14,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982551091] [2024-11-28 02:08:14,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982551091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:14,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:14,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:14,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186173990] [2024-11-28 02:08:14,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:14,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:08:14,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:14,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:08:14,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:08:14,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:14,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 02:08:14,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:14,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:14,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:15,375 INFO L124 PetriNetUnfolderBase]: 3062/6447 cut-off events. [2024-11-28 02:08:15,375 INFO L125 PetriNetUnfolderBase]: For 11343/11481 co-relation queries the response was YES. [2024-11-28 02:08:15,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 6447 events. 3062/6447 cut-off events. For 11343/11481 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 42679 event pairs, 581 based on Foata normal form. 0/6446 useless extension candidates. Maximal degree in co-relation 15404. Up to 2690 conditions per place. [2024-11-28 02:08:15,442 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2024-11-28 02:08:15,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1615 flow [2024-11-28 02:08:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:08:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-28 02:08:15,444 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 02:08:15,444 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 653 flow. Second operand 4 states and 116 transitions. [2024-11-28 02:08:15,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1615 flow [2024-11-28 02:08:15,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:08:15,476 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 665 flow [2024-11-28 02:08:15,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-11-28 02:08:15,478 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-28 02:08:15,479 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 665 flow [2024-11-28 02:08:15,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 02:08:15,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:15,479 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:15,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:08:15,479 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:15,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash -791994331, now seen corresponding path program 1 times [2024-11-28 02:08:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:15,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015784303] [2024-11-28 02:08:15,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:15,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:15,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:15,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015784303] [2024-11-28 02:08:15,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015784303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:15,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547421179] [2024-11-28 02:08:15,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:15,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:15,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:15,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:15,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:08:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:16,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:08:16,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:16,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:08:16,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547421179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:16,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:08:16,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 02:08:16,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369859032] [2024-11-28 02:08:16,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:16,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:08:16,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:16,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:08:16,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:08:16,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:16,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 665 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 02:08:16,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:16,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:16,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:17,068 INFO L124 PetriNetUnfolderBase]: 3167/6171 cut-off events. [2024-11-28 02:08:17,069 INFO L125 PetriNetUnfolderBase]: For 14520/14532 co-relation queries the response was YES. [2024-11-28 02:08:17,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19486 conditions, 6171 events. 3167/6171 cut-off events. For 14520/14532 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 38616 event pairs, 544 based on Foata normal form. 178/6171 useless extension candidates. Maximal degree in co-relation 18624. Up to 3741 conditions per place. [2024-11-28 02:08:17,115 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 96 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-11-28 02:08:17,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1087 flow [2024-11-28 02:08:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:08:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-28 02:08:17,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-28 02:08:17,116 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 665 flow. Second operand 4 states and 112 transitions. [2024-11-28 02:08:17,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1087 flow [2024-11-28 02:08:17,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 123 transitions, 1065 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:08:17,148 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 663 flow [2024-11-28 02:08:17,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=663, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-28 02:08:17,149 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-28 02:08:17,149 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 663 flow [2024-11-28 02:08:17,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 02:08:17,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:17,149 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:08:17,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:17,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:08:17,350 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:17,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:17,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1217981586, now seen corresponding path program 1 times [2024-11-28 02:08:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:17,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955614916] [2024-11-28 02:08:17,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:08:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955614916] [2024-11-28 02:08:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955614916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:17,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:17,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440473443] [2024-11-28 02:08:17,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:17,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:08:17,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:17,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:08:17,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:08:17,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:17,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:17,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:17,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:17,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:18,357 INFO L124 PetriNetUnfolderBase]: 2926/5856 cut-off events. [2024-11-28 02:08:18,358 INFO L125 PetriNetUnfolderBase]: For 12847/12872 co-relation queries the response was YES. [2024-11-28 02:08:18,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18210 conditions, 5856 events. 2926/5856 cut-off events. For 12847/12872 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 36402 event pairs, 615 based on Foata normal form. 178/6034 useless extension candidates. Maximal degree in co-relation 15487. Up to 2981 conditions per place. [2024-11-28 02:08:18,419 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2024-11-28 02:08:18,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 1215 flow [2024-11-28 02:08:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:08:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:08:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-28 02:08:18,422 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 02:08:18,422 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 663 flow. Second operand 4 states and 116 transitions. [2024-11-28 02:08:18,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 1215 flow [2024-11-28 02:08:18,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 1205 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:08:18,455 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 669 flow [2024-11-28 02:08:18,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=669, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-28 02:08:18,457 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-28 02:08:18,458 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 669 flow [2024-11-28 02:08:18,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:18,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:18,458 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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 02:08:18,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:08:18,459 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:18,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1922369501, now seen corresponding path program 1 times [2024-11-28 02:08:18,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:18,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198220164] [2024-11-28 02:08:18,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:18,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:18,733 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 02:08:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198220164] [2024-11-28 02:08:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198220164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:18,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:18,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:08:18,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407275327] [2024-11-28 02:08:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:18,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:08:18,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:18,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:08:18,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:08:18,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:08:18,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:18,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:18,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:08:18,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:19,558 INFO L124 PetriNetUnfolderBase]: 2862/5769 cut-off events. [2024-11-28 02:08:19,558 INFO L125 PetriNetUnfolderBase]: For 14681/14681 co-relation queries the response was YES. [2024-11-28 02:08:19,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18447 conditions, 5769 events. 2862/5769 cut-off events. For 14681/14681 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36296 event pairs, 455 based on Foata normal form. 104/5872 useless extension candidates. Maximal degree in co-relation 15455. Up to 3054 conditions per place. [2024-11-28 02:08:19,595 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2024-11-28 02:08:19,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1104 flow [2024-11-28 02:08:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:08:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:08:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-28 02:08:19,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-28 02:08:19,596 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 669 flow. Second operand 7 states and 162 transitions. [2024-11-28 02:08:19,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1104 flow [2024-11-28 02:08:19,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 129 transitions, 1080 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 02:08:19,630 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 752 flow [2024-11-28 02:08:19,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-11-28 02:08:19,631 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-11-28 02:08:19,631 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 752 flow [2024-11-28 02:08:19,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:19,631 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:19,631 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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 02:08:19,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:08:19,631 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:19,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1515104663, now seen corresponding path program 1 times [2024-11-28 02:08:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:19,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753965384] [2024-11-28 02:08:19,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:19,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:20,154 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 02:08:20,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:20,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753965384] [2024-11-28 02:08:20,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753965384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:20,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:20,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:08:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055962049] [2024-11-28 02:08:20,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:20,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:08:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:20,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:08:20,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:08:20,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:08:20,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 02:08:20,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:20,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:08:20,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:21,146 INFO L124 PetriNetUnfolderBase]: 3126/6321 cut-off events. [2024-11-28 02:08:21,146 INFO L125 PetriNetUnfolderBase]: For 19709/19709 co-relation queries the response was YES. [2024-11-28 02:08:21,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20406 conditions, 6321 events. 3126/6321 cut-off events. For 19709/19709 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 40321 event pairs, 622 based on Foata normal form. 76/6396 useless extension candidates. Maximal degree in co-relation 17378. Up to 3339 conditions per place. [2024-11-28 02:08:21,181 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 132 selfloop transitions, 17 changer transitions 6/164 dead transitions. [2024-11-28 02:08:21,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 164 transitions, 1455 flow [2024-11-28 02:08:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:08:21,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:08:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-11-28 02:08:21,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-11-28 02:08:21,183 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 752 flow. Second operand 8 states and 207 transitions. [2024-11-28 02:08:21,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 164 transitions, 1455 flow [2024-11-28 02:08:21,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1435 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-28 02:08:21,220 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 873 flow [2024-11-28 02:08:21,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=873, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2024-11-28 02:08:21,221 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2024-11-28 02:08:21,221 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 873 flow [2024-11-28 02:08:21,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 02:08:21,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:21,222 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:21,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:08:21,222 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:21,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:21,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2077080652, now seen corresponding path program 1 times [2024-11-28 02:08:21,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:21,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430642280] [2024-11-28 02:08:21,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:21,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:21,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:21,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430642280] [2024-11-28 02:08:21,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430642280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:21,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520481020] [2024-11-28 02:08:21,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:21,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:21,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:21,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:21,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:08:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:21,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:08:21,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:22,018 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 02:08:22,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:22,137 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 02:08:22,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520481020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:22,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:22,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 02:08:22,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785953878] [2024-11-28 02:08:22,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:22,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:08:22,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:22,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:08:22,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:08:22,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:08:22,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 873 flow. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 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 02:08:22,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:22,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:08:22,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:23,477 INFO L124 PetriNetUnfolderBase]: 3465/7040 cut-off events. [2024-11-28 02:08:23,477 INFO L125 PetriNetUnfolderBase]: For 25302/25302 co-relation queries the response was YES. [2024-11-28 02:08:23,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23122 conditions, 7040 events. 3465/7040 cut-off events. For 25302/25302 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 46470 event pairs, 609 based on Foata normal form. 176/7215 useless extension candidates. Maximal degree in co-relation 20230. Up to 1682 conditions per place. [2024-11-28 02:08:23,524 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 174 selfloop transitions, 58 changer transitions 18/259 dead transitions. [2024-11-28 02:08:23,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 259 transitions, 2200 flow [2024-11-28 02:08:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:08:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:08:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 426 transitions. [2024-11-28 02:08:23,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-11-28 02:08:23,527 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 873 flow. Second operand 18 states and 426 transitions. [2024-11-28 02:08:23,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 259 transitions, 2200 flow [2024-11-28 02:08:23,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 259 transitions, 2178 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-28 02:08:23,573 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 1115 flow [2024-11-28 02:08:23,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1115, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2024-11-28 02:08:23,573 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2024-11-28 02:08:23,574 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 1115 flow [2024-11-28 02:08:23,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 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 02:08:23,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:23,574 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-28 02:08:23,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:08:23,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:08:23,778 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:23,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1497592633, now seen corresponding path program 2 times [2024-11-28 02:08:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:23,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726938616] [2024-11-28 02:08:23,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:08:23,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:23,870 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:08:23,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:24,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726938616] [2024-11-28 02:08:24,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726938616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662003332] [2024-11-28 02:08:24,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:08:24,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:24,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:24,512 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:24,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:08:24,970 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:08:24,970 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:24,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:08:24,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:25,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:25,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662003332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:25,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:25,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-28 02:08:25,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602606598] [2024-11-28 02:08:25,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:25,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:08:25,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:25,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:08:25,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:08:25,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:25,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 1115 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 02:08:25,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:25,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:25,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:27,223 INFO L124 PetriNetUnfolderBase]: 5099/10510 cut-off events. [2024-11-28 02:08:27,223 INFO L125 PetriNetUnfolderBase]: For 45598/45598 co-relation queries the response was YES. [2024-11-28 02:08:27,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36071 conditions, 10510 events. 5099/10510 cut-off events. For 45598/45598 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 64313 event pairs, 929 based on Foata normal form. 208/10717 useless extension candidates. Maximal degree in co-relation 29043. Up to 2336 conditions per place. [2024-11-28 02:08:27,289 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 349 selfloop transitions, 73 changer transitions 0/431 dead transitions. [2024-11-28 02:08:27,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 431 transitions, 4018 flow [2024-11-28 02:08:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:08:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 02:08:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 672 transitions. [2024-11-28 02:08:27,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-28 02:08:27,293 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 1115 flow. Second operand 24 states and 672 transitions. [2024-11-28 02:08:27,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 431 transitions, 4018 flow [2024-11-28 02:08:27,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 431 transitions, 3818 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-11-28 02:08:27,351 INFO L231 Difference]: Finished difference. Result has 138 places, 140 transitions, 1835 flow [2024-11-28 02:08:27,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1835, PETRI_PLACES=138, PETRI_TRANSITIONS=140} [2024-11-28 02:08:27,352 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 92 predicate places. [2024-11-28 02:08:27,352 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 140 transitions, 1835 flow [2024-11-28 02:08:27,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 02:08:27,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:27,352 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:27,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:08:27,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:08:27,553 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:27,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash -782922941, now seen corresponding path program 2 times [2024-11-28 02:08:27,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:27,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365777142] [2024-11-28 02:08:27,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:08:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:27,650 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:08:27,650 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:28,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:28,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365777142] [2024-11-28 02:08:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365777142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:28,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787427778] [2024-11-28 02:08:28,416 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:08:28,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:28,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:28,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:28,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:08:29,152 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:08:29,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:29,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:08:29,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:29,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:29,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787427778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:29,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:29,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-28 02:08:29,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032502711] [2024-11-28 02:08:29,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:29,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:08:29,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:29,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:08:29,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:08:29,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:08:29,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 1835 flow. Second operand has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 02:08:29,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:29,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:08:29,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:31,449 INFO L124 PetriNetUnfolderBase]: 6158/12603 cut-off events. [2024-11-28 02:08:31,449 INFO L125 PetriNetUnfolderBase]: For 62164/62164 co-relation queries the response was YES. [2024-11-28 02:08:31,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43580 conditions, 12603 events. 6158/12603 cut-off events. For 62164/62164 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 80627 event pairs, 735 based on Foata normal form. 72/12674 useless extension candidates. Maximal degree in co-relation 40541. Up to 3367 conditions per place. [2024-11-28 02:08:31,587 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 259 selfloop transitions, 96 changer transitions 0/364 dead transitions. [2024-11-28 02:08:31,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 364 transitions, 3851 flow [2024-11-28 02:08:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:08:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:08:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 479 transitions. [2024-11-28 02:08:31,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49895833333333334 [2024-11-28 02:08:31,590 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 1835 flow. Second operand 20 states and 479 transitions. [2024-11-28 02:08:31,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 364 transitions, 3851 flow [2024-11-28 02:08:31,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 364 transitions, 3705 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-11-28 02:08:31,692 INFO L231 Difference]: Finished difference. Result has 155 places, 169 transitions, 2454 flow [2024-11-28 02:08:31,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2454, PETRI_PLACES=155, PETRI_TRANSITIONS=169} [2024-11-28 02:08:31,693 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 109 predicate places. [2024-11-28 02:08:31,693 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 169 transitions, 2454 flow [2024-11-28 02:08:31,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 02:08:31,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:31,693 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:31,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:31,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:08:31,894 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:31,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1179711599, now seen corresponding path program 3 times [2024-11-28 02:08:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605352827] [2024-11-28 02:08:31,894 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:08:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:32,556 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:08:32,556 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:33,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605352827] [2024-11-28 02:08:33,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605352827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135067320] [2024-11-28 02:08:33,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:08:33,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:33,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:33,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:33,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:08:34,968 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:08:34,969 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:34,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 2063 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:08:34,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:35,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135067320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:35,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:35,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-28 02:08:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236198332] [2024-11-28 02:08:35,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:35,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:08:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:35,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:08:35,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:08:35,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:08:35,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 169 transitions, 2454 flow. Second operand has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 02:08:35,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:35,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:08:35,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:38,262 INFO L124 PetriNetUnfolderBase]: 7794/15859 cut-off events. [2024-11-28 02:08:38,262 INFO L125 PetriNetUnfolderBase]: For 97346/97346 co-relation queries the response was YES. [2024-11-28 02:08:38,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56397 conditions, 15859 events. 7794/15859 cut-off events. For 97346/97346 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 107118 event pairs, 785 based on Foata normal form. 120/15978 useless extension candidates. Maximal degree in co-relation 53282. Up to 2703 conditions per place. [2024-11-28 02:08:38,441 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 356 selfloop transitions, 167 changer transitions 0/532 dead transitions. [2024-11-28 02:08:38,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 532 transitions, 5711 flow [2024-11-28 02:08:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 02:08:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-28 02:08:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 742 transitions. [2024-11-28 02:08:38,444 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4986559139784946 [2024-11-28 02:08:38,444 INFO L175 Difference]: Start difference. First operand has 155 places, 169 transitions, 2454 flow. Second operand 31 states and 742 transitions. [2024-11-28 02:08:38,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 532 transitions, 5711 flow [2024-11-28 02:08:38,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 532 transitions, 5605 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-11-28 02:08:38,627 INFO L231 Difference]: Finished difference. Result has 184 places, 222 transitions, 3646 flow [2024-11-28 02:08:38,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3646, PETRI_PLACES=184, PETRI_TRANSITIONS=222} [2024-11-28 02:08:38,627 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 138 predicate places. [2024-11-28 02:08:38,628 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 222 transitions, 3646 flow [2024-11-28 02:08:38,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 02:08:38,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:38,628 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:38,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:38,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:08:38,829 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:38,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1566334774, now seen corresponding path program 1 times [2024-11-28 02:08:38,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:38,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891274857] [2024-11-28 02:08:38,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:38,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:08:39,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:39,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891274857] [2024-11-28 02:08:39,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891274857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:39,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952753858] [2024-11-28 02:08:39,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:39,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:39,503 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:39,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:08:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:39,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:08:39,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:08:40,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:08:40,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952753858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:40,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:40,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-28 02:08:40,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428392801] [2024-11-28 02:08:40,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:40,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:08:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:40,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:08:40,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:08:40,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:08:40,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 222 transitions, 3646 flow. Second operand has 26 states, 26 states have (on average 17.46153846153846) internal successors, (454), 26 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 02:08:40,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:40,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:08:40,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:45,355 INFO L124 PetriNetUnfolderBase]: 11256/22947 cut-off events. [2024-11-28 02:08:45,355 INFO L125 PetriNetUnfolderBase]: For 177176/177176 co-relation queries the response was YES. [2024-11-28 02:08:45,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84609 conditions, 22947 events. 11256/22947 cut-off events. For 177176/177176 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 169148 event pairs, 1201 based on Foata normal form. 220/23166 useless extension candidates. Maximal degree in co-relation 81598. Up to 3933 conditions per place. [2024-11-28 02:08:45,587 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 343 selfloop transitions, 277 changer transitions 0/629 dead transitions. [2024-11-28 02:08:45,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 629 transitions, 8284 flow [2024-11-28 02:08:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:08:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-28 02:08:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 738 transitions. [2024-11-28 02:08:45,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2024-11-28 02:08:45,589 INFO L175 Difference]: Start difference. First operand has 184 places, 222 transitions, 3646 flow. Second operand 32 states and 738 transitions. [2024-11-28 02:08:45,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 629 transitions, 8284 flow [2024-11-28 02:08:45,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 629 transitions, 8030 flow, removed 87 selfloop flow, removed 10 redundant places. [2024-11-28 02:08:45,924 INFO L231 Difference]: Finished difference. Result has 212 places, 337 transitions, 6221 flow [2024-11-28 02:08:45,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6221, PETRI_PLACES=212, PETRI_TRANSITIONS=337} [2024-11-28 02:08:45,924 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 166 predicate places. [2024-11-28 02:08:45,924 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 337 transitions, 6221 flow [2024-11-28 02:08:45,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.46153846153846) internal successors, (454), 26 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 02:08:45,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:08:45,925 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2024-11-28 02:08:45,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:46,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:46,125 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:08:46,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash -403609575, now seen corresponding path program 3 times [2024-11-28 02:08:46,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:46,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565013498] [2024-11-28 02:08:46,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:08:46,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:46,617 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:08:46,617 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:48,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565013498] [2024-11-28 02:08:48,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565013498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:48,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687370505] [2024-11-28 02:08:48,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:08:48,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:48,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:48,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:48,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:08:50,960 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:08:50,960 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:08:50,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 2286 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:08:50,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:51,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:51,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687370505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:08:51,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:08:51,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2024-11-28 02:08:51,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832249610] [2024-11-28 02:08:51,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:51,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 02:08:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:51,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 02:08:51,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 02:08:51,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 02:08:51,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 337 transitions, 6221 flow. Second operand has 48 states, 48 states have (on average 18.770833333333332) internal successors, (901), 48 states have internal predecessors, (901), 0 states have call successors, (0), 0 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 02:08:51,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:08:51,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 02:08:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:08:59,919 INFO L124 PetriNetUnfolderBase]: 15536/31943 cut-off events. [2024-11-28 02:08:59,919 INFO L125 PetriNetUnfolderBase]: For 280382/280382 co-relation queries the response was YES. [2024-11-28 02:09:00,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118603 conditions, 31943 events. 15536/31943 cut-off events. For 280382/280382 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 222109 event pairs, 4023 based on Foata normal form. 468/32410 useless extension candidates. Maximal degree in co-relation 89070. Up to 11871 conditions per place. [2024-11-28 02:09:00,319 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 840 selfloop transitions, 188 changer transitions 0/1037 dead transitions. [2024-11-28 02:09:00,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1037 transitions, 12625 flow [2024-11-28 02:09:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:09:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-28 02:09:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1360 transitions. [2024-11-28 02:09:00,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-28 02:09:00,322 INFO L175 Difference]: Start difference. First operand has 212 places, 337 transitions, 6221 flow. Second operand 48 states and 1360 transitions. [2024-11-28 02:09:00,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1037 transitions, 12625 flow [2024-11-28 02:09:01,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 1037 transitions, 12421 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-11-28 02:09:01,085 INFO L231 Difference]: Finished difference. Result has 261 places, 413 transitions, 7931 flow [2024-11-28 02:09:01,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5852, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7931, PETRI_PLACES=261, PETRI_TRANSITIONS=413} [2024-11-28 02:09:01,085 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 215 predicate places. [2024-11-28 02:09:01,085 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 413 transitions, 7931 flow [2024-11-28 02:09:01,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 18.770833333333332) internal successors, (901), 48 states have internal predecessors, (901), 0 states have call successors, (0), 0 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 02:09:01,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:09:01,086 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:01,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:01,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:01,286 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:09:01,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash -644411521, now seen corresponding path program 4 times [2024-11-28 02:09:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:01,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834904057] [2024-11-28 02:09:01,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:09:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:01,373 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:09:01,373 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834904057] [2024-11-28 02:09:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834904057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617083897] [2024-11-28 02:09:02,490 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:09:02,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:02,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:02,493 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:02,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:09:02,983 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:09:02,983 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:02,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:09:02,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:03,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:03,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617083897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:03,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:03,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 40 [2024-11-28 02:09:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119945745] [2024-11-28 02:09:03,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:03,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 02:09:03,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:03,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 02:09:03,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1298, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 02:09:03,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:09:03,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 413 transitions, 7931 flow. Second operand has 42 states, 42 states have (on average 17.047619047619047) internal successors, (716), 42 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 02:09:03,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:09:03,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:09:03,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:09:17,617 INFO L124 PetriNetUnfolderBase]: 20947/42724 cut-off events. [2024-11-28 02:09:17,617 INFO L125 PetriNetUnfolderBase]: For 428780/428780 co-relation queries the response was YES. [2024-11-28 02:09:18,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160627 conditions, 42724 events. 20947/42724 cut-off events. For 428780/428780 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 312441 event pairs, 2343 based on Foata normal form. 228/42951 useless extension candidates. Maximal degree in co-relation 157052. Up to 7338 conditions per place. [2024-11-28 02:09:18,135 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 654 selfloop transitions, 469 changer transitions 0/1132 dead transitions. [2024-11-28 02:09:18,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1132 transitions, 15850 flow [2024-11-28 02:09:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 02:09:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-28 02:09:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 1248 transitions. [2024-11-28 02:09:18,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 02:09:18,140 INFO L175 Difference]: Start difference. First operand has 261 places, 413 transitions, 7931 flow. Second operand 52 states and 1248 transitions. [2024-11-28 02:09:18,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 1132 transitions, 15850 flow [2024-11-28 02:09:19,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 1132 transitions, 15313 flow, removed 115 selfloop flow, removed 17 redundant places. [2024-11-28 02:09:19,406 INFO L231 Difference]: Finished difference. Result has 318 places, 576 transitions, 12132 flow [2024-11-28 02:09:19,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7403, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=12132, PETRI_PLACES=318, PETRI_TRANSITIONS=576} [2024-11-28 02:09:19,407 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 272 predicate places. [2024-11-28 02:09:19,407 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 576 transitions, 12132 flow [2024-11-28 02:09:19,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 17.047619047619047) internal successors, (716), 42 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 02:09:19,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:09:19,408 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:19,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:19,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:09:19,608 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:09:19,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash -742360763, now seen corresponding path program 2 times [2024-11-28 02:09:19,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:19,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453419852] [2024-11-28 02:09:19,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:19,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:19,951 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:19,951 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 167 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:09:21,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453419852] [2024-11-28 02:09:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453419852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90389766] [2024-11-28 02:09:21,230 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:21,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:21,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:21,233 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:21,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:09:21,766 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:21,767 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:21,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:09:21,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 167 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:09:21,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 167 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:09:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90389766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:22,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:22,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2024-11-28 02:09:22,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636788313] [2024-11-28 02:09:22,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:22,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 02:09:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:22,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 02:09:22,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:09:22,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:09:22,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 576 transitions, 12132 flow. Second operand has 36 states, 36 states have (on average 17.27777777777778) internal successors, (622), 36 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 02:09:22,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:09:22,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:09:22,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:09:42,539 INFO L124 PetriNetUnfolderBase]: 27341/55820 cut-off events. [2024-11-28 02:09:42,539 INFO L125 PetriNetUnfolderBase]: For 649068/649068 co-relation queries the response was YES. [2024-11-28 02:09:43,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217824 conditions, 55820 events. 27341/55820 cut-off events. For 649068/649068 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 436391 event pairs, 2999 based on Foata normal form. 284/56103 useless extension candidates. Maximal degree in co-relation 214192. Up to 9620 conditions per place. [2024-11-28 02:09:43,392 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 576 selfloop transitions, 652 changer transitions 0/1237 dead transitions. [2024-11-28 02:09:43,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1237 transitions, 21363 flow [2024-11-28 02:09:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 02:09:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-28 02:09:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1043 transitions. [2024-11-28 02:09:43,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49384469696969696 [2024-11-28 02:09:43,395 INFO L175 Difference]: Start difference. First operand has 318 places, 576 transitions, 12132 flow. Second operand 44 states and 1043 transitions. [2024-11-28 02:09:43,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1237 transitions, 21363 flow [2024-11-28 02:09:46,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1237 transitions, 20943 flow, removed 184 selfloop flow, removed 7 redundant places. [2024-11-28 02:09:46,472 INFO L231 Difference]: Finished difference. Result has 371 places, 795 transitions, 18508 flow [2024-11-28 02:09:46,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11692, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=18508, PETRI_PLACES=371, PETRI_TRANSITIONS=795} [2024-11-28 02:09:46,473 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 325 predicate places. [2024-11-28 02:09:46,473 INFO L471 AbstractCegarLoop]: Abstraction has has 371 places, 795 transitions, 18508 flow [2024-11-28 02:09:46,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 17.27777777777778) internal successors, (622), 36 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 02:09:46,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:09:46,474 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:46,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:46,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:46,674 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:09:46,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash -232235740, now seen corresponding path program 3 times [2024-11-28 02:09:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:46,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322851835] [2024-11-28 02:09:46,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:09:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:47,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:09:47,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 1 proven. 245 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:09:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322851835] [2024-11-28 02:09:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322851835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717687567] [2024-11-28 02:09:49,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:09:49,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:49,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:49,068 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:49,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655fb92e-fb48-46e3-817b-7772c21319dd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:09:51,690 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:09:51,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:51,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:09:51,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 1 proven. 241 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:09:51,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 1 proven. 241 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:09:52,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717687567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:52,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:52,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 32 [2024-11-28 02:09:52,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580831645] [2024-11-28 02:09:52,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:52,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 02:09:52,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:52,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 02:09:52,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:09:52,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 02:09:52,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 795 transitions, 18508 flow. Second operand has 34 states, 34 states have (on average 17.529411764705884) internal successors, (596), 34 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 02:09:52,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:09:52,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 02:09:52,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand