./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/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_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/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_c36259ec-120d-4de5-94a2-f09de6eb31a2/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 dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:59:04,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:59:04,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:59:04,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:59:04,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:59:04,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:59:04,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:59:04,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:59:04,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:59:04,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:59:04,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:59:04,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:59:04,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:59:04,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:59:04,552 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:59:04,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:59:04,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:59:04,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:59:04,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:59:04,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:59:04,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:59:04,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:59:04,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:59:04,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:59:04,555 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:59:04,555 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:59:04,555 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:59:04,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:59:04,555 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:59:04,556 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:59:04,556 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:59:04,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:59:04,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:59:04,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:59:04,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:04,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:59:04,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:59:04,557 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:59:04,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:59:04,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:04,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:59:04,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:59:04,557 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:59:04,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:59:04,558 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:59:04,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:59:04,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:59:04,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:59:04,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:59:04,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:59:04,558 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_c36259ec-120d-4de5-94a2-f09de6eb31a2/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 -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2024-11-28 02:59:04,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:59:04,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:59:04,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:59:04,886 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:59:04,886 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:59:04,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-11-28 02:59:07,866 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/data/069740c7e/5b31dfce0e544351820e5dd6bfbbd476/FLAGb458b781c [2024-11-28 02:59:08,170 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:59:08,173 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-11-28 02:59:08,185 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/data/069740c7e/5b31dfce0e544351820e5dd6bfbbd476/FLAGb458b781c [2024-11-28 02:59:08,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/data/069740c7e/5b31dfce0e544351820e5dd6bfbbd476 [2024-11-28 02:59:08,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:59:08,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:59:08,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:59:08,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:59:08,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:59:08,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1111a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08, skipping insertion in model container [2024-11-28 02:59:08,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:59:08,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:59:08,469 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:59:08,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:59:08,510 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:59:08,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08 WrapperNode [2024-11-28 02:59:08,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:59:08,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:59:08,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:59:08,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:59:08,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,550 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-11-28 02:59:08,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:59:08,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:59:08,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:59:08,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:59:08,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,590 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:59:08,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,594 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:59:08,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:59:08,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:59:08,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:59:08,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (1/1) ... [2024-11-28 02:59:08,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:08,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:08,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:59:08,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:59:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:59:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:59:08,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:59:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:59:08,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:59:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:59:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:59:08,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:59:08,669 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 02:59:08,746 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:59:08,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:59:08,946 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:59:08,946 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:59:09,066 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:59:09,067 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:59:09,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:09 BoogieIcfgContainer [2024-11-28 02:59:09,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:59:09,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:59:09,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:59:09,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:59:09,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:08" (1/3) ... [2024-11-28 02:59:09,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7feb7dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:09, skipping insertion in model container [2024-11-28 02:59:09,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:08" (2/3) ... [2024-11-28 02:59:09,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7feb7dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:09, skipping insertion in model container [2024-11-28 02:59:09,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:09" (3/3) ... [2024-11-28 02:59:09,079 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-11-28 02:59:09,096 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:59:09,098 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy11.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-28 02:59:09,098 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:59:09,170 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:59:09,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-28 02:59:09,273 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-28 02:59:09,278 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:59:09,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-28 02:59:09,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-28 02:59:09,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-28 02:59:09,294 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:59:09,312 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;@3b23ac4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:59:09,312 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-28 02:59:09,324 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:59:09,326 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 02:59:09,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:59:09,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:09,327 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:59:09,328 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:09,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash 240460069, now seen corresponding path program 1 times [2024-11-28 02:59:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294665584] [2024-11-28 02:59:09,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:09,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:09,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:09,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294665584] [2024-11-28 02:59:09,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294665584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:09,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:09,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431281470] [2024-11-28 02:59:09,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:09,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:09,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:09,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:09,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:09,713 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 02:59:09,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 02:59:09,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:09,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 02:59:09,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:10,026 INFO L124 PetriNetUnfolderBase]: 243/438 cut-off events. [2024-11-28 02:59:10,027 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 02:59:10,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 438 events. 243/438 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2047 event pairs, 7 based on Foata normal form. 18/325 useless extension candidates. Maximal degree in co-relation 834. Up to 298 conditions per place. [2024-11-28 02:59:10,033 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 41 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-11-28 02:59:10,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 203 flow [2024-11-28 02:59:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-28 02:59:10,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-28 02:59:10,050 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 5 states and 76 transitions. [2024-11-28 02:59:10,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 203 flow [2024-11-28 02:59:10,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:59:10,060 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 66 flow [2024-11-28 02:59:10,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-11-28 02:59:10,067 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2024-11-28 02:59:10,067 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 66 flow [2024-11-28 02:59:10,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 02:59:10,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:10,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:59:10,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:59:10,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:10,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash 240460102, now seen corresponding path program 1 times [2024-11-28 02:59:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:10,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013426157] [2024-11-28 02:59:10,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:10,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:10,175 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 02:59:10,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:10,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013426157] [2024-11-28 02:59:10,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013426157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:10,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:10,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:59:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547298067] [2024-11-28 02:59:10,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:10,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:10,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:10,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:10,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:10,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:10,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 02:59:10,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:10,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:10,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:10,357 INFO L124 PetriNetUnfolderBase]: 195/356 cut-off events. [2024-11-28 02:59:10,358 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-28 02:59:10,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 356 events. 195/356 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1480 event pairs, 49 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 470. Up to 163 conditions per place. [2024-11-28 02:59:10,366 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 41 selfloop transitions, 5 changer transitions 2/53 dead transitions. [2024-11-28 02:59:10,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 224 flow [2024-11-28 02:59:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:59:10,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-28 02:59:10,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-11-28 02:59:10,372 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 66 flow. Second operand 4 states and 81 transitions. [2024-11-28 02:59:10,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 224 flow [2024-11-28 02:59:10,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:59:10,375 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 82 flow [2024-11-28 02:59:10,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-11-28 02:59:10,379 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-11-28 02:59:10,379 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 82 flow [2024-11-28 02:59:10,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 02:59:10,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:10,380 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:59:10,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:59:10,381 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:10,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:10,382 INFO L85 PathProgramCache]: Analyzing trace with hash 240460103, now seen corresponding path program 1 times [2024-11-28 02:59:10,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:10,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720361582] [2024-11-28 02:59:10,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:10,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:10,485 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 02:59:10,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:10,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720361582] [2024-11-28 02:59:10,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720361582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:10,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:10,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:59:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405495138] [2024-11-28 02:59:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:10,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:10,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:10,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:10,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:10,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:10,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 02:59:10,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:10,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:10,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:10,685 INFO L124 PetriNetUnfolderBase]: 239/436 cut-off events. [2024-11-28 02:59:10,685 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-28 02:59:10,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 436 events. 239/436 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1937 event pairs, 63 based on Foata normal form. 14/406 useless extension candidates. Maximal degree in co-relation 598. Up to 157 conditions per place. [2024-11-28 02:59:10,692 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 41 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-11-28 02:59:10,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 255 flow [2024-11-28 02:59:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:59:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-28 02:59:10,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-11-28 02:59:10,695 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 82 flow. Second operand 4 states and 82 transitions. [2024-11-28 02:59:10,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 255 flow [2024-11-28 02:59:10,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:10,699 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 137 flow [2024-11-28 02:59:10,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2024-11-28 02:59:10,702 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-11-28 02:59:10,702 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 137 flow [2024-11-28 02:59:10,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 02:59:10,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:10,703 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:59:10,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:59:10,703 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:10,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1135672187, now seen corresponding path program 1 times [2024-11-28 02:59:10,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945768817] [2024-11-28 02:59:10,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:10,833 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 02:59:10,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945768817] [2024-11-28 02:59:10,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945768817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:10,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:10,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:59:10,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320227180] [2024-11-28 02:59:10,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:10,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:59:10,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:10,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:59:10,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:59:10,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 02:59:10,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 02:59:10,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:10,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 02:59:10,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:10,987 INFO L124 PetriNetUnfolderBase]: 239/456 cut-off events. [2024-11-28 02:59:10,987 INFO L125 PetriNetUnfolderBase]: For 335/335 co-relation queries the response was YES. [2024-11-28 02:59:10,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 456 events. 239/456 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2080 event pairs, 150 based on Foata normal form. 18/422 useless extension candidates. Maximal degree in co-relation 533. Up to 339 conditions per place. [2024-11-28 02:59:10,993 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-28 02:59:10,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 246 flow [2024-11-28 02:59:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:59:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:59:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-28 02:59:10,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-28 02:59:10,995 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 137 flow. Second operand 3 states and 52 transitions. [2024-11-28 02:59:10,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 246 flow [2024-11-28 02:59:10,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:10,999 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 136 flow [2024-11-28 02:59:10,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-28 02:59:11,002 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-11-28 02:59:11,002 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 136 flow [2024-11-28 02:59:11,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 02:59:11,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:11,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:11,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:59:11,003 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:11,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -858366229, now seen corresponding path program 1 times [2024-11-28 02:59:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:11,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366434793] [2024-11-28 02:59:11,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:11,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:11,095 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 02:59:11,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:11,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366434793] [2024-11-28 02:59:11,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366434793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:11,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:11,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404151238] [2024-11-28 02:59:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:11,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:11,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:11,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:11,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 02:59:11,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 02:59:11,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:11,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 02:59:11,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:11,284 INFO L124 PetriNetUnfolderBase]: 269/466 cut-off events. [2024-11-28 02:59:11,284 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-28 02:59:11,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 466 events. 269/466 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1901 event pairs, 28 based on Foata normal form. 19/427 useless extension candidates. Maximal degree in co-relation 622. Up to 277 conditions per place. [2024-11-28 02:59:11,288 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 49 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-28 02:59:11,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 354 flow [2024-11-28 02:59:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-28 02:59:11,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-28 02:59:11,289 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 136 flow. Second operand 5 states and 72 transitions. [2024-11-28 02:59:11,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 354 flow [2024-11-28 02:59:11,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:11,292 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 134 flow [2024-11-28 02:59:11,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-28 02:59:11,293 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-11-28 02:59:11,293 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 134 flow [2024-11-28 02:59:11,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 02:59:11,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:11,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:11,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:59:11,294 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:11,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash -858366196, now seen corresponding path program 1 times [2024-11-28 02:59:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023264869] [2024-11-28 02:59:11,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:11,382 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 02:59:11,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:11,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023264869] [2024-11-28 02:59:11,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023264869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:11,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:11,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:59:11,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866870093] [2024-11-28 02:59:11,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:11,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:11,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:11,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:11,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:11,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:11,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 02:59:11,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:11,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:11,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:11,513 INFO L124 PetriNetUnfolderBase]: 214/383 cut-off events. [2024-11-28 02:59:11,513 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2024-11-28 02:59:11,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 383 events. 214/383 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1546 event pairs, 69 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 478. Up to 153 conditions per place. [2024-11-28 02:59:11,529 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-11-28 02:59:11,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 310 flow [2024-11-28 02:59:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:59:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-11-28 02:59:11,531 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-11-28 02:59:11,531 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 134 flow. Second operand 4 states and 75 transitions. [2024-11-28 02:59:11,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 310 flow [2024-11-28 02:59:11,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:59:11,533 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 175 flow [2024-11-28 02:59:11,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-11-28 02:59:11,534 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-28 02:59:11,534 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 175 flow [2024-11-28 02:59:11,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 02:59:11,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:11,534 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:11,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:59:11,535 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:11,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash -858366195, now seen corresponding path program 1 times [2024-11-28 02:59:11,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:11,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9792073] [2024-11-28 02:59:11,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:11,598 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 02:59:11,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:11,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9792073] [2024-11-28 02:59:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9792073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:11,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:59:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318982110] [2024-11-28 02:59:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:11,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:11,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:11,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:11,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:11,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 02:59:11,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:11,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:11,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:11,752 INFO L124 PetriNetUnfolderBase]: 278/487 cut-off events. [2024-11-28 02:59:11,752 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-11-28 02:59:11,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 487 events. 278/487 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1954 event pairs, 94 based on Foata normal form. 14/500 useless extension candidates. Maximal degree in co-relation 757. Up to 175 conditions per place. [2024-11-28 02:59:11,756 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 39 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2024-11-28 02:59:11,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 431 flow [2024-11-28 02:59:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:59:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-28 02:59:11,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-28 02:59:11,757 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 175 flow. Second operand 4 states and 78 transitions. [2024-11-28 02:59:11,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 431 flow [2024-11-28 02:59:11,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:11,765 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 307 flow [2024-11-28 02:59:11,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2024-11-28 02:59:11,766 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-11-28 02:59:11,766 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 307 flow [2024-11-28 02:59:11,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 02:59:11,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:11,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:11,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:59:11,767 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:11,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:11,768 INFO L85 PathProgramCache]: Analyzing trace with hash -459270230, now seen corresponding path program 1 times [2024-11-28 02:59:11,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:11,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955983444] [2024-11-28 02:59:11,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:11,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:11,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:11,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955983444] [2024-11-28 02:59:11,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955983444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:11,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:11,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:11,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408527872] [2024-11-28 02:59:11,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:11,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:11,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:11,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:11,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:11,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 02:59:11,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 02:59:11,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:11,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 02:59:11,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:12,062 INFO L124 PetriNetUnfolderBase]: 251/442 cut-off events. [2024-11-28 02:59:12,062 INFO L125 PetriNetUnfolderBase]: For 632/632 co-relation queries the response was YES. [2024-11-28 02:59:12,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 442 events. 251/442 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1772 event pairs, 67 based on Foata normal form. 16/458 useless extension candidates. Maximal degree in co-relation 814. Up to 171 conditions per place. [2024-11-28 02:59:12,066 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 49 selfloop transitions, 24 changer transitions 0/76 dead transitions. [2024-11-28 02:59:12,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 76 transitions, 603 flow [2024-11-28 02:59:12,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-11-28 02:59:12,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-28 02:59:12,068 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 307 flow. Second operand 5 states and 86 transitions. [2024-11-28 02:59:12,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 76 transitions, 603 flow [2024-11-28 02:59:12,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 76 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:12,076 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 408 flow [2024-11-28 02:59:12,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2024-11-28 02:59:12,077 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2024-11-28 02:59:12,077 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 408 flow [2024-11-28 02:59:12,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 02:59:12,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:12,077 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:12,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:59:12,077 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:12,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash -839549046, now seen corresponding path program 1 times [2024-11-28 02:59:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:12,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867335877] [2024-11-28 02:59:12,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:12,129 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 02:59:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:12,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867335877] [2024-11-28 02:59:12,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867335877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:12,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:12,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:59:12,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153008389] [2024-11-28 02:59:12,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:12,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:59:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:12,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:59:12,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:59:12,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 02:59:12,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 02:59:12,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:12,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 02:59:12,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:12,255 INFO L124 PetriNetUnfolderBase]: 251/425 cut-off events. [2024-11-28 02:59:12,255 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2024-11-28 02:59:12,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 425 events. 251/425 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1580 event pairs, 137 based on Foata normal form. 17/441 useless extension candidates. Maximal degree in co-relation 1043. Up to 351 conditions per place. [2024-11-28 02:59:12,260 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 55 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-28 02:59:12,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 594 flow [2024-11-28 02:59:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:59:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:59:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-28 02:59:12,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-11-28 02:59:12,262 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 408 flow. Second operand 3 states and 49 transitions. [2024-11-28 02:59:12,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 594 flow [2024-11-28 02:59:12,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 571 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:12,267 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 393 flow [2024-11-28 02:59:12,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-11-28 02:59:12,269 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2024-11-28 02:59:12,269 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 393 flow [2024-11-28 02:59:12,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 02:59:12,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:12,269 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:12,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:59:12,270 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:12,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:12,270 INFO L85 PathProgramCache]: Analyzing trace with hash 551119567, now seen corresponding path program 1 times [2024-11-28 02:59:12,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:12,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849170380] [2024-11-28 02:59:12,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:12,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:12,406 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 02:59:12,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:12,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849170380] [2024-11-28 02:59:12,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849170380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:12,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:12,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434008013] [2024-11-28 02:59:12,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:12,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:12,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:12,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:12,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:12,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:12,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:12,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:12,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:12,722 INFO L124 PetriNetUnfolderBase]: 303/534 cut-off events. [2024-11-28 02:59:12,722 INFO L125 PetriNetUnfolderBase]: For 1162/1162 co-relation queries the response was YES. [2024-11-28 02:59:12,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 534 events. 303/534 cut-off events. For 1162/1162 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2293 event pairs, 37 based on Foata normal form. 5/539 useless extension candidates. Maximal degree in co-relation 1155. Up to 145 conditions per place. [2024-11-28 02:59:12,727 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 58 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2024-11-28 02:59:12,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 97 transitions, 787 flow [2024-11-28 02:59:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:59:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:59:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-11-28 02:59:12,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-28 02:59:12,728 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 393 flow. Second operand 9 states and 156 transitions. [2024-11-28 02:59:12,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 97 transitions, 787 flow [2024-11-28 02:59:12,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 97 transitions, 763 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:12,737 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 535 flow [2024-11-28 02:59:12,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=535, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2024-11-28 02:59:12,739 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2024-11-28 02:59:12,740 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 535 flow [2024-11-28 02:59:12,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:12,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:12,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:12,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:59:12,741 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:12,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:12,742 INFO L85 PathProgramCache]: Analyzing trace with hash 322945138, now seen corresponding path program 1 times [2024-11-28 02:59:12,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:12,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389956669] [2024-11-28 02:59:12,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:12,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:12,836 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 02:59:12,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:12,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389956669] [2024-11-28 02:59:12,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389956669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:12,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:12,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:12,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169277820] [2024-11-28 02:59:12,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:12,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:12,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:12,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:12,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:12,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:12,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:12,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:12,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:12,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:13,115 INFO L124 PetriNetUnfolderBase]: 329/567 cut-off events. [2024-11-28 02:59:13,115 INFO L125 PetriNetUnfolderBase]: For 2003/2003 co-relation queries the response was YES. [2024-11-28 02:59:13,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 567 events. 329/567 cut-off events. For 2003/2003 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2393 event pairs, 62 based on Foata normal form. 10/576 useless extension candidates. Maximal degree in co-relation 1795. Up to 256 conditions per place. [2024-11-28 02:59:13,121 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 61 selfloop transitions, 38 changer transitions 0/101 dead transitions. [2024-11-28 02:59:13,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 1034 flow [2024-11-28 02:59:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-11-28 02:59:13,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2024-11-28 02:59:13,122 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 535 flow. Second operand 8 states and 123 transitions. [2024-11-28 02:59:13,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 1034 flow [2024-11-28 02:59:13,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 894 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 02:59:13,134 INFO L231 Difference]: Finished difference. Result has 61 places, 77 transitions, 698 flow [2024-11-28 02:59:13,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=61, PETRI_TRANSITIONS=77} [2024-11-28 02:59:13,135 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-11-28 02:59:13,135 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 77 transitions, 698 flow [2024-11-28 02:59:13,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:13,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:13,135 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:13,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:59:13,136 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:13,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1141419396, now seen corresponding path program 2 times [2024-11-28 02:59:13,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:13,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10306727] [2024-11-28 02:59:13,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:13,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:13,148 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:59:13,150 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:13,231 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 02:59:13,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:13,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10306727] [2024-11-28 02:59:13,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10306727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:13,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:13,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:13,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121390560] [2024-11-28 02:59:13,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:13,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:13,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:13,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:13,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:13,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:13,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 77 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:13,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:13,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:13,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:13,486 INFO L124 PetriNetUnfolderBase]: 341/607 cut-off events. [2024-11-28 02:59:13,486 INFO L125 PetriNetUnfolderBase]: For 1739/1739 co-relation queries the response was YES. [2024-11-28 02:59:13,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 607 events. 341/607 cut-off events. For 1739/1739 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2615 event pairs, 74 based on Foata normal form. 10/616 useless extension candidates. Maximal degree in co-relation 2076. Up to 200 conditions per place. [2024-11-28 02:59:13,503 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 59 selfloop transitions, 42 changer transitions 0/103 dead transitions. [2024-11-28 02:59:13,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 1060 flow [2024-11-28 02:59:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-11-28 02:59:13,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2024-11-28 02:59:13,505 INFO L175 Difference]: Start difference. First operand has 61 places, 77 transitions, 698 flow. Second operand 8 states and 121 transitions. [2024-11-28 02:59:13,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 1060 flow [2024-11-28 02:59:13,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 1011 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:13,515 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 846 flow [2024-11-28 02:59:13,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=846, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2024-11-28 02:59:13,515 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2024-11-28 02:59:13,515 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 846 flow [2024-11-28 02:59:13,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:13,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:13,516 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:13,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:59:13,516 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:13,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash 551234886, now seen corresponding path program 3 times [2024-11-28 02:59:13,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:13,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659361658] [2024-11-28 02:59:13,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:59:13,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:13,524 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:59:13,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:13,594 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 02:59:13,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:13,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659361658] [2024-11-28 02:59:13,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659361658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:13,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:13,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:13,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754481065] [2024-11-28 02:59:13,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:13,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:13,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:13,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:13,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:13,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:13,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:13,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:13,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:13,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:13,828 INFO L124 PetriNetUnfolderBase]: 326/578 cut-off events. [2024-11-28 02:59:13,828 INFO L125 PetriNetUnfolderBase]: For 1969/1969 co-relation queries the response was YES. [2024-11-28 02:59:13,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 578 events. 326/578 cut-off events. For 1969/1969 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2464 event pairs, 53 based on Foata normal form. 15/592 useless extension candidates. Maximal degree in co-relation 2279. Up to 148 conditions per place. [2024-11-28 02:59:13,833 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 58 selfloop transitions, 42 changer transitions 0/102 dead transitions. [2024-11-28 02:59:13,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 1128 flow [2024-11-28 02:59:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-11-28 02:59:13,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2024-11-28 02:59:13,836 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 846 flow. Second operand 8 states and 119 transitions. [2024-11-28 02:59:13,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 1128 flow [2024-11-28 02:59:13,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 102 transitions, 1030 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-28 02:59:13,851 INFO L231 Difference]: Finished difference. Result has 69 places, 78 transitions, 810 flow [2024-11-28 02:59:13,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=810, PETRI_PLACES=69, PETRI_TRANSITIONS=78} [2024-11-28 02:59:13,853 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2024-11-28 02:59:13,854 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 78 transitions, 810 flow [2024-11-28 02:59:13,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:13,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:13,854 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:13,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:59:13,855 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:13,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1141102267, now seen corresponding path program 2 times [2024-11-28 02:59:13,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:13,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728098165] [2024-11-28 02:59:13,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:13,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:13,866 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:59:13,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:13,963 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 02:59:13,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:13,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728098165] [2024-11-28 02:59:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728098165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:13,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:13,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494495985] [2024-11-28 02:59:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:13,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:13,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:13,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:13,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:13,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 78 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:13,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:13,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:13,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:14,264 INFO L124 PetriNetUnfolderBase]: 383/696 cut-off events. [2024-11-28 02:59:14,265 INFO L125 PetriNetUnfolderBase]: For 2145/2149 co-relation queries the response was YES. [2024-11-28 02:59:14,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 696 events. 383/696 cut-off events. For 2145/2149 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3238 event pairs, 53 based on Foata normal form. 19/715 useless extension candidates. Maximal degree in co-relation 2878. Up to 330 conditions per place. [2024-11-28 02:59:14,272 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 53 changer transitions 3/127 dead transitions. [2024-11-28 02:59:14,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 127 transitions, 1462 flow [2024-11-28 02:59:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-11-28 02:59:14,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55078125 [2024-11-28 02:59:14,273 INFO L175 Difference]: Start difference. First operand has 69 places, 78 transitions, 810 flow. Second operand 8 states and 141 transitions. [2024-11-28 02:59:14,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 127 transitions, 1462 flow [2024-11-28 02:59:14,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 127 transitions, 1345 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-28 02:59:14,286 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 944 flow [2024-11-28 02:59:14,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=944, PETRI_PLACES=71, PETRI_TRANSITIONS=86} [2024-11-28 02:59:14,287 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2024-11-28 02:59:14,287 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 944 flow [2024-11-28 02:59:14,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:14,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:14,287 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:14,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:59:14,287 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:14,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash 635745059, now seen corresponding path program 3 times [2024-11-28 02:59:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:14,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613754515] [2024-11-28 02:59:14,288 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:59:14,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:14,297 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:59:14,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:14,382 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 02:59:14,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613754515] [2024-11-28 02:59:14,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613754515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:14,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:14,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:14,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941199053] [2024-11-28 02:59:14,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:14,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:14,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:14,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:14,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:14,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 86 transitions, 944 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:14,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:14,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:14,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:14,639 INFO L124 PetriNetUnfolderBase]: 413/759 cut-off events. [2024-11-28 02:59:14,639 INFO L125 PetriNetUnfolderBase]: For 2781/2785 co-relation queries the response was YES. [2024-11-28 02:59:14,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 759 events. 413/759 cut-off events. For 2781/2785 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3683 event pairs, 91 based on Foata normal form. 19/777 useless extension candidates. Maximal degree in co-relation 3085. Up to 360 conditions per place. [2024-11-28 02:59:14,645 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 49 changer transitions 3/113 dead transitions. [2024-11-28 02:59:14,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 1343 flow [2024-11-28 02:59:14,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:14,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-28 02:59:14,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-11-28 02:59:14,647 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 944 flow. Second operand 6 states and 106 transitions. [2024-11-28 02:59:14,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 1343 flow [2024-11-28 02:59:14,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 1223 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 02:59:14,659 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 969 flow [2024-11-28 02:59:14,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=969, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2024-11-28 02:59:14,660 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2024-11-28 02:59:14,661 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 969 flow [2024-11-28 02:59:14,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:14,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:14,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:14,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:59:14,661 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:14,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 551240797, now seen corresponding path program 1 times [2024-11-28 02:59:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330706297] [2024-11-28 02:59:14,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:14,759 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 02:59:14,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:14,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330706297] [2024-11-28 02:59:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330706297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:14,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:14,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:14,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107376959] [2024-11-28 02:59:14,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:14,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:14,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:14,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:14,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:14,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:14,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 969 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:14,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:14,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:14,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:15,015 INFO L124 PetriNetUnfolderBase]: 425/777 cut-off events. [2024-11-28 02:59:15,015 INFO L125 PetriNetUnfolderBase]: For 2603/2611 co-relation queries the response was YES. [2024-11-28 02:59:15,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 777 events. 425/777 cut-off events. For 2603/2611 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3771 event pairs, 75 based on Foata normal form. 12/787 useless extension candidates. Maximal degree in co-relation 3098. Up to 377 conditions per place. [2024-11-28 02:59:15,022 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 50 changer transitions 0/118 dead transitions. [2024-11-28 02:59:15,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 1363 flow [2024-11-28 02:59:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-11-28 02:59:15,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2024-11-28 02:59:15,024 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 969 flow. Second operand 6 states and 109 transitions. [2024-11-28 02:59:15,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 1363 flow [2024-11-28 02:59:15,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 1288 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:15,037 INFO L231 Difference]: Finished difference. Result has 78 places, 91 transitions, 1050 flow [2024-11-28 02:59:15,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1050, PETRI_PLACES=78, PETRI_TRANSITIONS=91} [2024-11-28 02:59:15,037 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-11-28 02:59:15,037 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 91 transitions, 1050 flow [2024-11-28 02:59:15,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:15,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:15,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:15,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:59:15,038 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:15,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 635750968, now seen corresponding path program 1 times [2024-11-28 02:59:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:15,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084916123] [2024-11-28 02:59:15,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:15,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:15,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084916123] [2024-11-28 02:59:15,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084916123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:15,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:15,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:15,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854982099] [2024-11-28 02:59:15,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:15,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:15,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:15,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:15,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:15,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 1050 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:15,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:15,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:15,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:15,367 INFO L124 PetriNetUnfolderBase]: 431/787 cut-off events. [2024-11-28 02:59:15,367 INFO L125 PetriNetUnfolderBase]: For 3432/3432 co-relation queries the response was YES. [2024-11-28 02:59:15,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 787 events. 431/787 cut-off events. For 3432/3432 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3868 event pairs, 111 based on Foata normal form. 8/794 useless extension candidates. Maximal degree in co-relation 3251. Up to 332 conditions per place. [2024-11-28 02:59:15,373 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 65 selfloop transitions, 45 changer transitions 1/113 dead transitions. [2024-11-28 02:59:15,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 113 transitions, 1405 flow [2024-11-28 02:59:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-11-28 02:59:15,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-11-28 02:59:15,375 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 1050 flow. Second operand 6 states and 98 transitions. [2024-11-28 02:59:15,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 113 transitions, 1405 flow [2024-11-28 02:59:15,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 113 transitions, 1337 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 02:59:15,391 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 1149 flow [2024-11-28 02:59:15,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1149, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2024-11-28 02:59:15,391 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 49 predicate places. [2024-11-28 02:59:15,392 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 1149 flow [2024-11-28 02:59:15,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:15,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:15,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:15,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:59:15,392 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:15,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 647686588, now seen corresponding path program 2 times [2024-11-28 02:59:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739066955] [2024-11-28 02:59:15,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:15,399 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:59:15,399 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:15,456 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 02:59:15,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:15,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739066955] [2024-11-28 02:59:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739066955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:15,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:15,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:15,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830346386] [2024-11-28 02:59:15,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:15,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:15,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:15,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:15,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:15,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 1149 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:15,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:15,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:15,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:15,681 INFO L124 PetriNetUnfolderBase]: 433/797 cut-off events. [2024-11-28 02:59:15,681 INFO L125 PetriNetUnfolderBase]: For 3884/3884 co-relation queries the response was YES. [2024-11-28 02:59:15,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3645 conditions, 797 events. 433/797 cut-off events. For 3884/3884 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3903 event pairs, 105 based on Foata normal form. 8/804 useless extension candidates. Maximal degree in co-relation 3353. Up to 405 conditions per place. [2024-11-28 02:59:15,688 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 64 selfloop transitions, 44 changer transitions 1/111 dead transitions. [2024-11-28 02:59:15,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 111 transitions, 1480 flow [2024-11-28 02:59:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-11-28 02:59:15,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-11-28 02:59:15,689 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 1149 flow. Second operand 6 states and 95 transitions. [2024-11-28 02:59:15,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 111 transitions, 1480 flow [2024-11-28 02:59:15,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 111 transitions, 1457 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:15,709 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 1255 flow [2024-11-28 02:59:15,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1255, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2024-11-28 02:59:15,710 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2024-11-28 02:59:15,710 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 1255 flow [2024-11-28 02:59:15,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:15,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:15,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:15,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:59:15,710 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:15,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash 636068099, now seen corresponding path program 2 times [2024-11-28 02:59:15,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:15,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695433648] [2024-11-28 02:59:15,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:15,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:15,718 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:59:15,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:15,790 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 02:59:15,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:15,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695433648] [2024-11-28 02:59:15,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695433648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:15,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:15,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:15,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207520942] [2024-11-28 02:59:15,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:15,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:15,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:15,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:15,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:15,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:15,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 1255 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:15,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:15,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:15,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:16,115 INFO L124 PetriNetUnfolderBase]: 447/837 cut-off events. [2024-11-28 02:59:16,115 INFO L125 PetriNetUnfolderBase]: For 4708/4716 co-relation queries the response was YES. [2024-11-28 02:59:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3882 conditions, 837 events. 447/837 cut-off events. For 4708/4716 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4254 event pairs, 68 based on Foata normal form. 20/857 useless extension candidates. Maximal degree in co-relation 3588. Up to 417 conditions per place. [2024-11-28 02:59:16,122 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 55 changer transitions 6/133 dead transitions. [2024-11-28 02:59:16,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 1811 flow [2024-11-28 02:59:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-11-28 02:59:16,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55078125 [2024-11-28 02:59:16,124 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 1255 flow. Second operand 8 states and 141 transitions. [2024-11-28 02:59:16,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 1811 flow [2024-11-28 02:59:16,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 133 transitions, 1712 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-28 02:59:16,154 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 1316 flow [2024-11-28 02:59:16,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1316, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-11-28 02:59:16,155 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2024-11-28 02:59:16,155 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 1316 flow [2024-11-28 02:59:16,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:16,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:16,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:16,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:59:16,156 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:16,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:16,156 INFO L85 PathProgramCache]: Analyzing trace with hash 647701468, now seen corresponding path program 3 times [2024-11-28 02:59:16,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:16,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319121532] [2024-11-28 02:59:16,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:59:16,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:16,167 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:59:16,168 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:16,254 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 02:59:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319121532] [2024-11-28 02:59:16,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319121532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:16,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:16,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:16,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193688458] [2024-11-28 02:59:16,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:16,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:16,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:16,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:16,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:16,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:16,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 1316 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:16,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:16,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:16,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:16,456 INFO L124 PetriNetUnfolderBase]: 431/803 cut-off events. [2024-11-28 02:59:16,456 INFO L125 PetriNetUnfolderBase]: For 5738/5738 co-relation queries the response was YES. [2024-11-28 02:59:16,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 803 events. 431/803 cut-off events. For 5738/5738 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3999 event pairs, 103 based on Foata normal form. 12/814 useless extension candidates. Maximal degree in co-relation 3636. Up to 303 conditions per place. [2024-11-28 02:59:16,475 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 64 selfloop transitions, 41 changer transitions 0/107 dead transitions. [2024-11-28 02:59:16,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 1601 flow [2024-11-28 02:59:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-11-28 02:59:16,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-11-28 02:59:16,481 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 1316 flow. Second operand 6 states and 91 transitions. [2024-11-28 02:59:16,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 1601 flow [2024-11-28 02:59:16,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 107 transitions, 1314 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-28 02:59:16,506 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 1089 flow [2024-11-28 02:59:16,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1089, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-11-28 02:59:16,508 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-11-28 02:59:16,508 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 1089 flow [2024-11-28 02:59:16,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:16,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:16,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:16,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:59:16,509 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:16,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash 647227087, now seen corresponding path program 1 times [2024-11-28 02:59:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:16,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960165088] [2024-11-28 02:59:16,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:16,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:16,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:16,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960165088] [2024-11-28 02:59:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960165088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:16,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:16,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849982856] [2024-11-28 02:59:16,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:16,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:16,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:16,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:16,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:16,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 02:59:16,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 1089 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 02:59:16,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:16,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 02:59:16,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:16,755 INFO L124 PetriNetUnfolderBase]: 401/745 cut-off events. [2024-11-28 02:59:16,755 INFO L125 PetriNetUnfolderBase]: For 3236/3236 co-relation queries the response was YES. [2024-11-28 02:59:16,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3279 conditions, 745 events. 401/745 cut-off events. For 3236/3236 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3690 event pairs, 97 based on Foata normal form. 16/760 useless extension candidates. Maximal degree in co-relation 3076. Up to 419 conditions per place. [2024-11-28 02:59:16,761 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 62 selfloop transitions, 42 changer transitions 0/106 dead transitions. [2024-11-28 02:59:16,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 1407 flow [2024-11-28 02:59:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-28 02:59:16,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-11-28 02:59:16,762 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 1089 flow. Second operand 5 states and 77 transitions. [2024-11-28 02:59:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 1407 flow [2024-11-28 02:59:16,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 1274 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-28 02:59:16,775 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 1042 flow [2024-11-28 02:59:16,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1042, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-11-28 02:59:16,776 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2024-11-28 02:59:16,776 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 1042 flow [2024-11-28 02:59:16,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 02:59:16,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:16,776 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:16,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:59:16,777 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:16,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash 648220409, now seen corresponding path program 3 times [2024-11-28 02:59:16,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:16,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762063128] [2024-11-28 02:59:16,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:59:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:16,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:59:16,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:16,844 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 02:59:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762063128] [2024-11-28 02:59:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762063128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:16,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881940145] [2024-11-28 02:59:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:16,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:16,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:16,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:16,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:16,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 1042 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:16,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:16,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:16,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:17,118 INFO L124 PetriNetUnfolderBase]: 441/831 cut-off events. [2024-11-28 02:59:17,118 INFO L125 PetriNetUnfolderBase]: For 3079/3083 co-relation queries the response was YES. [2024-11-28 02:59:17,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3558 conditions, 831 events. 441/831 cut-off events. For 3079/3083 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4340 event pairs, 66 based on Foata normal form. 8/839 useless extension candidates. Maximal degree in co-relation 3279. Up to 353 conditions per place. [2024-11-28 02:59:17,125 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 53 changer transitions 3/122 dead transitions. [2024-11-28 02:59:17,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 1490 flow [2024-11-28 02:59:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:17,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-11-28 02:59:17,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.52734375 [2024-11-28 02:59:17,131 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 1042 flow. Second operand 8 states and 135 transitions. [2024-11-28 02:59:17,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 1490 flow [2024-11-28 02:59:17,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 1455 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:17,144 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 1144 flow [2024-11-28 02:59:17,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1144, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-11-28 02:59:17,145 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2024-11-28 02:59:17,146 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 1144 flow [2024-11-28 02:59:17,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 02:59:17,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:17,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:17,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:59:17,147 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:17,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1421742573, now seen corresponding path program 1 times [2024-11-28 02:59:17,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:17,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038205354] [2024-11-28 02:59:17,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:17,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:17,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038205354] [2024-11-28 02:59:17,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038205354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:17,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947512361] [2024-11-28 02:59:17,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:17,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:17,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:17,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:17,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:59:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:17,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:17,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:17,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:17,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947512361] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:17,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:59:17,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2024-11-28 02:59:17,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920712567] [2024-11-28 02:59:17,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:17,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:17,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:17,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:17,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:17,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:17,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 1144 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:17,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:17,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:17,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:17,618 INFO L124 PetriNetUnfolderBase]: 484/915 cut-off events. [2024-11-28 02:59:17,618 INFO L125 PetriNetUnfolderBase]: For 4319/4323 co-relation queries the response was YES. [2024-11-28 02:59:17,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 915 events. 484/915 cut-off events. For 4319/4323 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4729 event pairs, 60 based on Foata normal form. 16/931 useless extension candidates. Maximal degree in co-relation 3780. Up to 347 conditions per place. [2024-11-28 02:59:17,626 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 104 selfloop transitions, 33 changer transitions 0/139 dead transitions. [2024-11-28 02:59:17,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 139 transitions, 1791 flow [2024-11-28 02:59:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:59:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:59:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-11-28 02:59:17,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2024-11-28 02:59:17,628 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 1144 flow. Second operand 7 states and 115 transitions. [2024-11-28 02:59:17,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 139 transitions, 1791 flow [2024-11-28 02:59:17,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 1664 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 02:59:17,660 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 1298 flow [2024-11-28 02:59:17,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1298, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2024-11-28 02:59:17,660 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2024-11-28 02:59:17,661 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 1298 flow [2024-11-28 02:59:17,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:17,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:17,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:17,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:59:17,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:17,865 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:17,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash -971488916, now seen corresponding path program 1 times [2024-11-28 02:59:17,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:17,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940358689] [2024-11-28 02:59:17,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940358689] [2024-11-28 02:59:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940358689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700032757] [2024-11-28 02:59:17,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:17,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:17,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:17,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:17,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:59:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:17,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:17,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:17,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:18,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700032757] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:18,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:59:18,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2024-11-28 02:59:18,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766653699] [2024-11-28 02:59:18,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:18,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:18,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:18,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:18,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:18,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:18,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:18,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:18,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:18,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:18,320 INFO L124 PetriNetUnfolderBase]: 523/1000 cut-off events. [2024-11-28 02:59:18,320 INFO L125 PetriNetUnfolderBase]: For 4819/4819 co-relation queries the response was YES. [2024-11-28 02:59:18,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4588 conditions, 1000 events. 523/1000 cut-off events. For 4819/4819 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5288 event pairs, 66 based on Foata normal form. 13/1013 useless extension candidates. Maximal degree in co-relation 4365. Up to 399 conditions per place. [2024-11-28 02:59:18,328 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 115 selfloop transitions, 43 changer transitions 0/160 dead transitions. [2024-11-28 02:59:18,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 160 transitions, 2031 flow [2024-11-28 02:59:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:59:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:59:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-11-28 02:59:18,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-28 02:59:18,330 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 1298 flow. Second operand 7 states and 118 transitions. [2024-11-28 02:59:18,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 160 transitions, 2031 flow [2024-11-28 02:59:18,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 160 transitions, 1988 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:18,351 INFO L231 Difference]: Finished difference. Result has 99 places, 124 transitions, 1600 flow [2024-11-28 02:59:18,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1600, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2024-11-28 02:59:18,351 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 66 predicate places. [2024-11-28 02:59:18,352 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 1600 flow [2024-11-28 02:59:18,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:18,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:18,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:18,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:59:18,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 02:59:18,553 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:18,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 110979437, now seen corresponding path program 2 times [2024-11-28 02:59:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782393195] [2024-11-28 02:59:18,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:18,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:18,563 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:18,563 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782393195] [2024-11-28 02:59:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782393195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163310201] [2024-11-28 02:59:18,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:18,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:18,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:18,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:18,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:59:18,751 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:18,752 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:18,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:18,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:18,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:18,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163310201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:18,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:18,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-28 02:59:18,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857912923] [2024-11-28 02:59:18,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:18,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:18,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:18,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:18,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:59:18,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:18,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 1600 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:18,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:18,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:18,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:19,126 INFO L124 PetriNetUnfolderBase]: 547/1030 cut-off events. [2024-11-28 02:59:19,126 INFO L125 PetriNetUnfolderBase]: For 6208/6208 co-relation queries the response was YES. [2024-11-28 02:59:19,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5147 conditions, 1030 events. 547/1030 cut-off events. For 6208/6208 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5443 event pairs, 77 based on Foata normal form. 12/1042 useless extension candidates. Maximal degree in co-relation 4846. Up to 272 conditions per place. [2024-11-28 02:59:19,134 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 145 selfloop transitions, 31 changer transitions 8/186 dead transitions. [2024-11-28 02:59:19,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 186 transitions, 2540 flow [2024-11-28 02:59:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:59:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:59:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-11-28 02:59:19,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-28 02:59:19,136 INFO L175 Difference]: Start difference. First operand has 99 places, 124 transitions, 1600 flow. Second operand 7 states and 120 transitions. [2024-11-28 02:59:19,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 186 transitions, 2540 flow [2024-11-28 02:59:19,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 186 transitions, 2503 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:19,164 INFO L231 Difference]: Finished difference. Result has 108 places, 138 transitions, 1830 flow [2024-11-28 02:59:19,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1830, PETRI_PLACES=108, PETRI_TRANSITIONS=138} [2024-11-28 02:59:19,165 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2024-11-28 02:59:19,165 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 138 transitions, 1830 flow [2024-11-28 02:59:19,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:19,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:19,166 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:19,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:59:19,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 02:59:19,366 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:19,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash -789914771, now seen corresponding path program 3 times [2024-11-28 02:59:19,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:19,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133166125] [2024-11-28 02:59:19,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:59:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:19,381 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:59:19,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:19,440 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 02:59:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133166125] [2024-11-28 02:59:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133166125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:19,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:19,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:59:19,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773532566] [2024-11-28 02:59:19,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:19,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:19,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:19,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:19,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:19,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 138 transitions, 1830 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:19,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:19,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:19,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:19,800 INFO L124 PetriNetUnfolderBase]: 602/1158 cut-off events. [2024-11-28 02:59:19,800 INFO L125 PetriNetUnfolderBase]: For 8124/8124 co-relation queries the response was YES. [2024-11-28 02:59:19,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6066 conditions, 1158 events. 602/1158 cut-off events. For 8124/8124 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6470 event pairs, 148 based on Foata normal form. 12/1170 useless extension candidates. Maximal degree in co-relation 5843. Up to 431 conditions per place. [2024-11-28 02:59:19,811 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 150 selfloop transitions, 66 changer transitions 4/222 dead transitions. [2024-11-28 02:59:19,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 222 transitions, 3106 flow [2024-11-28 02:59:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-11-28 02:59:19,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-28 02:59:19,812 INFO L175 Difference]: Start difference. First operand has 108 places, 138 transitions, 1830 flow. Second operand 8 states and 152 transitions. [2024-11-28 02:59:19,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 222 transitions, 3106 flow [2024-11-28 02:59:19,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 222 transitions, 3058 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:19,849 INFO L231 Difference]: Finished difference. Result has 117 places, 159 transitions, 2308 flow [2024-11-28 02:59:19,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2308, PETRI_PLACES=117, PETRI_TRANSITIONS=159} [2024-11-28 02:59:19,850 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 84 predicate places. [2024-11-28 02:59:19,850 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 159 transitions, 2308 flow [2024-11-28 02:59:19,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:19,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:19,850 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:19,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 02:59:19,850 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:19,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1903492062, now seen corresponding path program 1 times [2024-11-28 02:59:19,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:19,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280165017] [2024-11-28 02:59:19,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:19,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:19,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:19,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280165017] [2024-11-28 02:59:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280165017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:19,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285673512] [2024-11-28 02:59:19,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:19,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:19,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:19,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:19,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:59:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:19,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:19,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:19,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285673512] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:20,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:59:20,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-11-28 02:59:20,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490224578] [2024-11-28 02:59:20,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:20,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:20,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:20,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:20,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:59:20,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:20,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 159 transitions, 2308 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:20,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:20,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:20,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:20,370 INFO L124 PetriNetUnfolderBase]: 723/1408 cut-off events. [2024-11-28 02:59:20,371 INFO L125 PetriNetUnfolderBase]: For 10931/10935 co-relation queries the response was YES. [2024-11-28 02:59:20,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7749 conditions, 1408 events. 723/1408 cut-off events. For 10931/10935 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8384 event pairs, 92 based on Foata normal form. 17/1425 useless extension candidates. Maximal degree in co-relation 7274. Up to 428 conditions per place. [2024-11-28 02:59:20,382 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 142 selfloop transitions, 86 changer transitions 2/232 dead transitions. [2024-11-28 02:59:20,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 232 transitions, 3584 flow [2024-11-28 02:59:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-28 02:59:20,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-28 02:59:20,384 INFO L175 Difference]: Start difference. First operand has 117 places, 159 transitions, 2308 flow. Second operand 6 states and 118 transitions. [2024-11-28 02:59:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 232 transitions, 3584 flow [2024-11-28 02:59:20,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 232 transitions, 3507 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:20,428 INFO L231 Difference]: Finished difference. Result has 126 places, 183 transitions, 2897 flow [2024-11-28 02:59:20,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2897, PETRI_PLACES=126, PETRI_TRANSITIONS=183} [2024-11-28 02:59:20,429 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 93 predicate places. [2024-11-28 02:59:20,429 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 183 transitions, 2897 flow [2024-11-28 02:59:20,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:20,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:20,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:20,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:59:20,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 02:59:20,634 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:20,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:20,634 INFO L85 PathProgramCache]: Analyzing trace with hash 65993296, now seen corresponding path program 2 times [2024-11-28 02:59:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:20,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160465202] [2024-11-28 02:59:20,635 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:20,642 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:20,642 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:20,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:20,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160465202] [2024-11-28 02:59:20,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160465202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:20,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137244658] [2024-11-28 02:59:20,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:20,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:20,752 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:20,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:59:20,805 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:20,805 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:20,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:20,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:20,855 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:20,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137244658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:20,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:20,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-28 02:59:20,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899413458] [2024-11-28 02:59:20,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:20,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:20,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:20,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:20,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:59:20,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:20,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 183 transitions, 2897 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:20,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:20,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:20,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:21,265 INFO L124 PetriNetUnfolderBase]: 693/1338 cut-off events. [2024-11-28 02:59:21,265 INFO L125 PetriNetUnfolderBase]: For 12931/12931 co-relation queries the response was YES. [2024-11-28 02:59:21,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7924 conditions, 1338 events. 693/1338 cut-off events. For 12931/12931 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7776 event pairs, 99 based on Foata normal form. 6/1344 useless extension candidates. Maximal degree in co-relation 7717. Up to 337 conditions per place. [2024-11-28 02:59:21,278 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 156 selfloop transitions, 62 changer transitions 7/227 dead transitions. [2024-11-28 02:59:21,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 227 transitions, 3722 flow [2024-11-28 02:59:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-11-28 02:59:21,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-11-28 02:59:21,279 INFO L175 Difference]: Start difference. First operand has 126 places, 183 transitions, 2897 flow. Second operand 8 states and 140 transitions. [2024-11-28 02:59:21,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 227 transitions, 3722 flow [2024-11-28 02:59:21,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 227 transitions, 3667 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-28 02:59:21,329 INFO L231 Difference]: Finished difference. Result has 135 places, 186 transitions, 3076 flow [2024-11-28 02:59:21,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3076, PETRI_PLACES=135, PETRI_TRANSITIONS=186} [2024-11-28 02:59:21,330 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2024-11-28 02:59:21,330 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 186 transitions, 3076 flow [2024-11-28 02:59:21,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:21,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:21,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:21,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:59:21,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 02:59:21,535 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:21,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:21,536 INFO L85 PathProgramCache]: Analyzing trace with hash -781195269, now seen corresponding path program 4 times [2024-11-28 02:59:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751191682] [2024-11-28 02:59:21,536 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:59:21,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:21,545 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:59:21,545 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:21,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751191682] [2024-11-28 02:59:21,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751191682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:21,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:21,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:59:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486872244] [2024-11-28 02:59:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:21,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:21,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:21,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:21,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:21,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:21,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 186 transitions, 3076 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:21,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:21,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:21,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:21,898 INFO L124 PetriNetUnfolderBase]: 635/1222 cut-off events. [2024-11-28 02:59:21,898 INFO L125 PetriNetUnfolderBase]: For 13916/13916 co-relation queries the response was YES. [2024-11-28 02:59:21,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 1222 events. 635/1222 cut-off events. For 13916/13916 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6881 event pairs, 194 based on Foata normal form. 7/1229 useless extension candidates. Maximal degree in co-relation 7137. Up to 625 conditions per place. [2024-11-28 02:59:21,909 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 163 selfloop transitions, 29 changer transitions 8/202 dead transitions. [2024-11-28 02:59:21,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 202 transitions, 3540 flow [2024-11-28 02:59:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-28 02:59:21,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-11-28 02:59:21,911 INFO L175 Difference]: Start difference. First operand has 135 places, 186 transitions, 3076 flow. Second operand 5 states and 89 transitions. [2024-11-28 02:59:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 202 transitions, 3540 flow [2024-11-28 02:59:21,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 202 transitions, 3479 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-28 02:59:21,963 INFO L231 Difference]: Finished difference. Result has 136 places, 178 transitions, 2934 flow [2024-11-28 02:59:21,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2934, PETRI_PLACES=136, PETRI_TRANSITIONS=178} [2024-11-28 02:59:21,965 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 103 predicate places. [2024-11-28 02:59:21,965 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 178 transitions, 2934 flow [2024-11-28 02:59:21,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:21,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:21,965 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:21,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 02:59:21,965 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:21,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:21,966 INFO L85 PathProgramCache]: Analyzing trace with hash -804336925, now seen corresponding path program 5 times [2024-11-28 02:59:21,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:21,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796461764] [2024-11-28 02:59:21,966 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:59:21,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:21,973 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:21,973 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:22,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:22,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796461764] [2024-11-28 02:59:22,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796461764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:22,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610104707] [2024-11-28 02:59:22,005 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:59:22,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:22,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:22,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:22,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:59:22,058 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:22,058 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:22,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:22,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:22,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610104707] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:22,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:59:22,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-11-28 02:59:22,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147395337] [2024-11-28 02:59:22,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:22,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:22,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:22,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:22,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:59:22,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:22,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 178 transitions, 2934 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:22,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:22,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:22,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:22,470 INFO L124 PetriNetUnfolderBase]: 641/1259 cut-off events. [2024-11-28 02:59:22,470 INFO L125 PetriNetUnfolderBase]: For 14371/14371 co-relation queries the response was YES. [2024-11-28 02:59:22,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7567 conditions, 1259 events. 641/1259 cut-off events. For 14371/14371 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7190 event pairs, 85 based on Foata normal form. 12/1271 useless extension candidates. Maximal degree in co-relation 7334. Up to 348 conditions per place. [2024-11-28 02:59:22,483 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 138 selfloop transitions, 99 changer transitions 5/244 dead transitions. [2024-11-28 02:59:22,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 244 transitions, 4204 flow [2024-11-28 02:59:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-28 02:59:22,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-28 02:59:22,485 INFO L175 Difference]: Start difference. First operand has 136 places, 178 transitions, 2934 flow. Second operand 6 states and 118 transitions. [2024-11-28 02:59:22,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 244 transitions, 4204 flow [2024-11-28 02:59:22,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 244 transitions, 4134 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 02:59:22,538 INFO L231 Difference]: Finished difference. Result has 137 places, 201 transitions, 3575 flow [2024-11-28 02:59:22,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3575, PETRI_PLACES=137, PETRI_TRANSITIONS=201} [2024-11-28 02:59:22,539 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2024-11-28 02:59:22,539 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 201 transitions, 3575 flow [2024-11-28 02:59:22,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:22,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:22,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:22,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:59:22,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:22,740 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:22,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1993283000, now seen corresponding path program 3 times [2024-11-28 02:59:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:22,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593144564] [2024-11-28 02:59:22,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:59:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:22,749 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:59:22,749 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:22,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:22,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593144564] [2024-11-28 02:59:22,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593144564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:22,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221610366] [2024-11-28 02:59:22,872 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:59:22,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:22,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:22,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:22,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:59:22,928 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:59:22,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:22,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:22,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:22,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:23,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221610366] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:23,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:59:23,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2024-11-28 02:59:23,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406863401] [2024-11-28 02:59:23,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:23,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:23,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:23,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:59:23,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:23,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 201 transitions, 3575 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:23,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:23,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:23,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:23,367 INFO L124 PetriNetUnfolderBase]: 561/1106 cut-off events. [2024-11-28 02:59:23,368 INFO L125 PetriNetUnfolderBase]: For 15194/15194 co-relation queries the response was YES. [2024-11-28 02:59:23,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1106 events. 561/1106 cut-off events. For 15194/15194 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6090 event pairs, 111 based on Foata normal form. 13/1118 useless extension candidates. Maximal degree in co-relation 6831. Up to 408 conditions per place. [2024-11-28 02:59:23,377 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 153 selfloop transitions, 75 changer transitions 1/231 dead transitions. [2024-11-28 02:59:23,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 231 transitions, 4247 flow [2024-11-28 02:59:23,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:23,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-11-28 02:59:23,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-28 02:59:23,379 INFO L175 Difference]: Start difference. First operand has 137 places, 201 transitions, 3575 flow. Second operand 6 states and 117 transitions. [2024-11-28 02:59:23,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 231 transitions, 4247 flow [2024-11-28 02:59:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 231 transitions, 4184 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-28 02:59:23,435 INFO L231 Difference]: Finished difference. Result has 141 places, 197 transitions, 3728 flow [2024-11-28 02:59:23,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3312, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3728, PETRI_PLACES=141, PETRI_TRANSITIONS=197} [2024-11-28 02:59:23,436 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 108 predicate places. [2024-11-28 02:59:23,436 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 197 transitions, 3728 flow [2024-11-28 02:59:23,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:23,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:23,437 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:23,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:59:23,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:23,641 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:23,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2098129204, now seen corresponding path program 4 times [2024-11-28 02:59:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:23,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993746051] [2024-11-28 02:59:23,642 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:59:23,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:23,649 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:59:23,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:23,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:23,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993746051] [2024-11-28 02:59:23,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993746051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:23,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:23,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:59:23,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581058768] [2024-11-28 02:59:23,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:23,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:23,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:23,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:23,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:23,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 197 transitions, 3728 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:23,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:23,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:23,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:23,981 INFO L124 PetriNetUnfolderBase]: 552/1091 cut-off events. [2024-11-28 02:59:23,981 INFO L125 PetriNetUnfolderBase]: For 17546/17546 co-relation queries the response was YES. [2024-11-28 02:59:23,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7345 conditions, 1091 events. 552/1091 cut-off events. For 17546/17546 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6004 event pairs, 106 based on Foata normal form. 10/1100 useless extension candidates. Maximal degree in co-relation 6889. Up to 375 conditions per place. [2024-11-28 02:59:23,991 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 176 selfloop transitions, 36 changer transitions 5/219 dead transitions. [2024-11-28 02:59:23,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 219 transitions, 4327 flow [2024-11-28 02:59:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:59:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:59:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-11-28 02:59:23,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2024-11-28 02:59:23,993 INFO L175 Difference]: Start difference. First operand has 141 places, 197 transitions, 3728 flow. Second operand 7 states and 115 transitions. [2024-11-28 02:59:23,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 219 transitions, 4327 flow [2024-11-28 02:59:24,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 219 transitions, 4268 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:24,056 INFO L231 Difference]: Finished difference. Result has 147 places, 193 transitions, 3663 flow [2024-11-28 02:59:24,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3663, PETRI_PLACES=147, PETRI_TRANSITIONS=193} [2024-11-28 02:59:24,057 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 114 predicate places. [2024-11-28 02:59:24,057 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 193 transitions, 3663 flow [2024-11-28 02:59:24,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:24,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:24,058 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:24,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 02:59:24,058 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:24,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash -332213818, now seen corresponding path program 5 times [2024-11-28 02:59:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:24,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763408225] [2024-11-28 02:59:24,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:59:24,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:24,067 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:24,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:24,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763408225] [2024-11-28 02:59:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763408225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:24,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:24,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:59:24,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009715588] [2024-11-28 02:59:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:24,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:24,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:24,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:24,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:24,097 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:24,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 193 transitions, 3663 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:24,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:24,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:24,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:24,403 INFO L124 PetriNetUnfolderBase]: 493/966 cut-off events. [2024-11-28 02:59:24,403 INFO L125 PetriNetUnfolderBase]: For 16325/16325 co-relation queries the response was YES. [2024-11-28 02:59:24,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6602 conditions, 966 events. 493/966 cut-off events. For 16325/16325 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5118 event pairs, 93 based on Foata normal form. 6/971 useless extension candidates. Maximal degree in co-relation 6282. Up to 338 conditions per place. [2024-11-28 02:59:24,412 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 140 selfloop transitions, 55 changer transitions 3/200 dead transitions. [2024-11-28 02:59:24,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 200 transitions, 3935 flow [2024-11-28 02:59:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:59:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:59:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-11-28 02:59:24,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49609375 [2024-11-28 02:59:24,413 INFO L175 Difference]: Start difference. First operand has 147 places, 193 transitions, 3663 flow. Second operand 8 states and 127 transitions. [2024-11-28 02:59:24,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 200 transitions, 3935 flow [2024-11-28 02:59:24,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 200 transitions, 3788 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-28 02:59:24,464 INFO L231 Difference]: Finished difference. Result has 149 places, 179 transitions, 3380 flow [2024-11-28 02:59:24,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3380, PETRI_PLACES=149, PETRI_TRANSITIONS=179} [2024-11-28 02:59:24,464 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 116 predicate places. [2024-11-28 02:59:24,465 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 179 transitions, 3380 flow [2024-11-28 02:59:24,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:24,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:24,465 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:24,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 02:59:24,465 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:24,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:24,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1179402383, now seen corresponding path program 6 times [2024-11-28 02:59:24,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:24,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684622720] [2024-11-28 02:59:24,466 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:59:24,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:24,473 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:59:24,473 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:24,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:24,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684622720] [2024-11-28 02:59:24,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684622720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:24,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15469310] [2024-11-28 02:59:24,572 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:59:24,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:24,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:24,574 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:24,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:59:24,622 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 02:59:24,623 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:24,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:24,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:24,665 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:24,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15469310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:24,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:24,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-28 02:59:24,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271553633] [2024-11-28 02:59:24,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:24,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:24,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:24,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:24,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:59:24,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-28 02:59:24,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 179 transitions, 3380 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:24,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:24,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-28 02:59:24,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:24,958 INFO L124 PetriNetUnfolderBase]: 442/869 cut-off events. [2024-11-28 02:59:24,958 INFO L125 PetriNetUnfolderBase]: For 14958/14958 co-relation queries the response was YES. [2024-11-28 02:59:24,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5971 conditions, 869 events. 442/869 cut-off events. For 14958/14958 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4459 event pairs, 71 based on Foata normal form. 7/875 useless extension candidates. Maximal degree in co-relation 5890. Up to 287 conditions per place. [2024-11-28 02:59:24,965 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 125 selfloop transitions, 50 changer transitions 5/182 dead transitions. [2024-11-28 02:59:24,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 182 transitions, 3578 flow [2024-11-28 02:59:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:59:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:59:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-11-28 02:59:24,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2024-11-28 02:59:24,967 INFO L175 Difference]: Start difference. First operand has 149 places, 179 transitions, 3380 flow. Second operand 7 states and 109 transitions. [2024-11-28 02:59:24,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 182 transitions, 3578 flow [2024-11-28 02:59:25,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 182 transitions, 3443 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-28 02:59:25,015 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 3111 flow [2024-11-28 02:59:25,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3111, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2024-11-28 02:59:25,016 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2024-11-28 02:59:25,016 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 3111 flow [2024-11-28 02:59:25,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 02:59:25,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:25,016 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:25,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:25,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:25,217 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:25,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:25,217 INFO L85 PathProgramCache]: Analyzing trace with hash 245405522, now seen corresponding path program 1 times [2024-11-28 02:59:25,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:25,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893763368] [2024-11-28 02:59:25,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:25,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893763368] [2024-11-28 02:59:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893763368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164323421] [2024-11-28 02:59:25,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:25,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:25,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:25,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:59:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:25,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:59:25,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:25,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164323421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:25,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 02:59:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916747372] [2024-11-28 02:59:25,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:25,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:59:25,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:25,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:59:25,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:59:25,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 02:59:25,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 3111 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 02:59:25,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:25,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 02:59:25,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:29,276 INFO L124 PetriNetUnfolderBase]: 1239/2404 cut-off events. [2024-11-28 02:59:29,276 INFO L125 PetriNetUnfolderBase]: For 37051/37051 co-relation queries the response was YES. [2024-11-28 02:59:29,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16201 conditions, 2404 events. 1239/2404 cut-off events. For 37051/37051 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15588 event pairs, 91 based on Foata normal form. 80/2484 useless extension candidates. Maximal degree in co-relation 15583. Up to 460 conditions per place. [2024-11-28 02:59:29,292 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 357 changer transitions 10/579 dead transitions. [2024-11-28 02:59:29,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 579 transitions, 10126 flow [2024-11-28 02:59:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-28 02:59:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-11-28 02:59:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 672 transitions. [2024-11-28 02:59:29,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2024-11-28 02:59:29,295 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 3111 flow. Second operand 76 states and 672 transitions. [2024-11-28 02:59:29,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 579 transitions, 10126 flow [2024-11-28 02:59:29,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 579 transitions, 9872 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-28 02:59:29,438 INFO L231 Difference]: Finished difference. Result has 217 places, 412 transitions, 8561 flow [2024-11-28 02:59:29,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=8561, PETRI_PLACES=217, PETRI_TRANSITIONS=412} [2024-11-28 02:59:29,439 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 184 predicate places. [2024-11-28 02:59:29,439 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 412 transitions, 8561 flow [2024-11-28 02:59:29,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 02:59:29,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:29,439 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:29,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:29,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:29,643 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:29,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2048416774, now seen corresponding path program 1 times [2024-11-28 02:59:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:29,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479992426] [2024-11-28 02:59:29,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:29,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:29,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479992426] [2024-11-28 02:59:29,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479992426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:29,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612080231] [2024-11-28 02:59:29,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:29,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:29,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:29,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:29,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:59:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:29,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:59:29,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:30,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612080231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:30,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:30,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 02:59:30,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331820953] [2024-11-28 02:59:30,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:30,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:59:30,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:30,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:59:30,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:59:30,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 02:59:30,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 412 transitions, 8561 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 02:59:30,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:30,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 02:59:30,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:32,752 INFO L124 PetriNetUnfolderBase]: 1328/2605 cut-off events. [2024-11-28 02:59:32,752 INFO L125 PetriNetUnfolderBase]: For 44117/44117 co-relation queries the response was YES. [2024-11-28 02:59:32,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18676 conditions, 2605 events. 1328/2605 cut-off events. For 44117/44117 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 17093 event pairs, 112 based on Foata normal form. 56/2661 useless extension candidates. Maximal degree in co-relation 18075. Up to 682 conditions per place. [2024-11-28 02:59:32,770 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 329 changer transitions 18/557 dead transitions. [2024-11-28 02:59:32,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 557 transitions, 10981 flow [2024-11-28 02:59:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-28 02:59:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-28 02:59:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 521 transitions. [2024-11-28 02:59:32,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29602272727272727 [2024-11-28 02:59:32,773 INFO L175 Difference]: Start difference. First operand has 217 places, 412 transitions, 8561 flow. Second operand 55 states and 521 transitions. [2024-11-28 02:59:32,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 557 transitions, 10981 flow [2024-11-28 02:59:33,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 557 transitions, 10018 flow, removed 133 selfloop flow, removed 9 redundant places. [2024-11-28 02:59:33,031 INFO L231 Difference]: Finished difference. Result has 268 places, 423 transitions, 8641 flow [2024-11-28 02:59:33,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7641, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8641, PETRI_PLACES=268, PETRI_TRANSITIONS=423} [2024-11-28 02:59:33,032 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 235 predicate places. [2024-11-28 02:59:33,032 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 423 transitions, 8641 flow [2024-11-28 02:59:33,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 02:59:33,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:33,033 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:33,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:59:33,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 02:59:33,233 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:33,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:33,234 INFO L85 PathProgramCache]: Analyzing trace with hash -688282150, now seen corresponding path program 2 times [2024-11-28 02:59:33,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:33,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057600934] [2024-11-28 02:59:33,234 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:33,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:33,239 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:59:33,239 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:33,357 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 02:59:33,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057600934] [2024-11-28 02:59:33,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057600934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:33,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:33,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:59:33,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948212138] [2024-11-28 02:59:33,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:33,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:59:33,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:33,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:59:33,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:59:33,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-28 02:59:33,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 423 transitions, 8641 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 02:59:33,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:33,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-28 02:59:33,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:34,389 INFO L124 PetriNetUnfolderBase]: 1440/2795 cut-off events. [2024-11-28 02:59:34,389 INFO L125 PetriNetUnfolderBase]: For 44114/44114 co-relation queries the response was YES. [2024-11-28 02:59:34,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20267 conditions, 2795 events. 1440/2795 cut-off events. For 44114/44114 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18451 event pairs, 264 based on Foata normal form. 20/2815 useless extension candidates. Maximal degree in co-relation 19733. Up to 1499 conditions per place. [2024-11-28 02:59:34,410 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 287 changer transitions 4/515 dead transitions. [2024-11-28 02:59:34,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 515 transitions, 11203 flow [2024-11-28 02:59:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:59:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 02:59:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 216 transitions. [2024-11-28 02:59:34,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-11-28 02:59:34,411 INFO L175 Difference]: Start difference. First operand has 268 places, 423 transitions, 8641 flow. Second operand 16 states and 216 transitions. [2024-11-28 02:59:34,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 515 transitions, 11203 flow [2024-11-28 02:59:34,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 515 transitions, 10803 flow, removed 17 selfloop flow, removed 29 redundant places. [2024-11-28 02:59:34,607 INFO L231 Difference]: Finished difference. Result has 259 places, 475 transitions, 10146 flow [2024-11-28 02:59:34,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8281, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10146, PETRI_PLACES=259, PETRI_TRANSITIONS=475} [2024-11-28 02:59:34,608 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 226 predicate places. [2024-11-28 02:59:34,608 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 475 transitions, 10146 flow [2024-11-28 02:59:34,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 02:59:34,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:34,608 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:34,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-28 02:59:34,609 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:34,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash 6959834, now seen corresponding path program 3 times [2024-11-28 02:59:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939196415] [2024-11-28 02:59:34,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:59:34,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:34,616 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:59:34,616 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:34,750 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 02:59:34,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:34,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939196415] [2024-11-28 02:59:34,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939196415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:34,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:34,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:59:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082485535] [2024-11-28 02:59:34,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:34,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:59:34,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:34,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:59:34,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:59:34,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-28 02:59:34,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 475 transitions, 10146 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 02:59:34,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:34,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-28 02:59:34,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:35,710 INFO L124 PetriNetUnfolderBase]: 1522/2938 cut-off events. [2024-11-28 02:59:35,711 INFO L125 PetriNetUnfolderBase]: For 50232/50232 co-relation queries the response was YES. [2024-11-28 02:59:35,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22112 conditions, 2938 events. 1522/2938 cut-off events. For 50232/50232 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19525 event pairs, 281 based on Foata normal form. 20/2958 useless extension candidates. Maximal degree in co-relation 21568. Up to 1569 conditions per place. [2024-11-28 02:59:35,730 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 304 changer transitions 4/541 dead transitions. [2024-11-28 02:59:35,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 541 transitions, 12302 flow [2024-11-28 02:59:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:59:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:59:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 190 transitions. [2024-11-28 02:59:35,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42410714285714285 [2024-11-28 02:59:35,731 INFO L175 Difference]: Start difference. First operand has 259 places, 475 transitions, 10146 flow. Second operand 14 states and 190 transitions. [2024-11-28 02:59:35,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 541 transitions, 12302 flow [2024-11-28 02:59:36,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 541 transitions, 12153 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:36,026 INFO L231 Difference]: Finished difference. Result has 274 places, 503 transitions, 11493 flow [2024-11-28 02:59:36,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=10009, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11493, PETRI_PLACES=274, PETRI_TRANSITIONS=503} [2024-11-28 02:59:36,027 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 241 predicate places. [2024-11-28 02:59:36,027 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 503 transitions, 11493 flow [2024-11-28 02:59:36,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 02:59:36,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:36,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:36,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 02:59:36,028 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:36,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash 913494416, now seen corresponding path program 2 times [2024-11-28 02:59:36,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:36,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669076323] [2024-11-28 02:59:36,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:36,035 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:36,035 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:36,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669076323] [2024-11-28 02:59:36,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669076323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:36,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359612264] [2024-11-28 02:59:36,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:36,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:36,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:36,164 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:36,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:59:36,208 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:36,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:36,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:59:36,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:36,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:36,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359612264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:36,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:36,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 02:59:36,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648704447] [2024-11-28 02:59:36,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:36,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:59:36,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:36,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:59:36,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:59:36,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 02:59:36,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 503 transitions, 11493 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 02:59:36,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:36,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 02:59:36,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:40,264 INFO L124 PetriNetUnfolderBase]: 3266/6298 cut-off events. [2024-11-28 02:59:40,264 INFO L125 PetriNetUnfolderBase]: For 116618/116618 co-relation queries the response was YES. [2024-11-28 02:59:40,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48832 conditions, 6298 events. 3266/6298 cut-off events. For 116618/116618 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 47911 event pairs, 315 based on Foata normal form. 130/6427 useless extension candidates. Maximal degree in co-relation 47644. Up to 1466 conditions per place. [2024-11-28 02:59:40,316 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 338 selfloop transitions, 810 changer transitions 27/1177 dead transitions. [2024-11-28 02:59:40,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 1177 transitions, 27357 flow [2024-11-28 02:59:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 02:59:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-28 02:59:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 569 transitions. [2024-11-28 02:59:40,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2822420634920635 [2024-11-28 02:59:40,319 INFO L175 Difference]: Start difference. First operand has 274 places, 503 transitions, 11493 flow. Second operand 63 states and 569 transitions. [2024-11-28 02:59:40,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 1177 transitions, 27357 flow [2024-11-28 02:59:41,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1177 transitions, 26951 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-28 02:59:41,273 INFO L231 Difference]: Finished difference. Result has 348 places, 995 transitions, 24929 flow [2024-11-28 02:59:41,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=11243, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=24929, PETRI_PLACES=348, PETRI_TRANSITIONS=995} [2024-11-28 02:59:41,274 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 315 predicate places. [2024-11-28 02:59:41,274 INFO L471 AbstractCegarLoop]: Abstraction has has 348 places, 995 transitions, 24929 flow [2024-11-28 02:59:41,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 02:59:41,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:41,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:41,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:59:41,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 02:59:41,475 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:41,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1463371002, now seen corresponding path program 4 times [2024-11-28 02:59:41,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:41,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791794204] [2024-11-28 02:59:41,476 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:59:41,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:41,483 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:59:41,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791794204] [2024-11-28 02:59:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791794204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338587619] [2024-11-28 02:59:41,696 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:59:41,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:41,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:41,698 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:41,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:59:41,745 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:59:41,745 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:41,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:59:41,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:41,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:42,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338587619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:42,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:42,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 02:59:42,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259783474] [2024-11-28 02:59:42,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:42,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:59:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:42,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:59:42,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:59:42,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 02:59:42,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 995 transitions, 24929 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 02:59:42,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:42,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 02:59:42,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:47,406 INFO L124 PetriNetUnfolderBase]: 5905/11239 cut-off events. [2024-11-28 02:59:47,406 INFO L125 PetriNetUnfolderBase]: For 256288/256288 co-relation queries the response was YES. [2024-11-28 02:59:47,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94370 conditions, 11239 events. 5905/11239 cut-off events. For 256288/256288 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 93074 event pairs, 437 based on Foata normal form. 48/11287 useless extension candidates. Maximal degree in co-relation 93454. Up to 2469 conditions per place. [2024-11-28 02:59:47,531 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 549 selfloop transitions, 1498 changer transitions 21/2070 dead transitions. [2024-11-28 02:59:47,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 2070 transitions, 53863 flow [2024-11-28 02:59:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 02:59:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-28 02:59:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 525 transitions. [2024-11-28 02:59:47,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29296875 [2024-11-28 02:59:47,533 INFO L175 Difference]: Start difference. First operand has 348 places, 995 transitions, 24929 flow. Second operand 56 states and 525 transitions. [2024-11-28 02:59:47,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 2070 transitions, 53863 flow [2024-11-28 02:59:51,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 2070 transitions, 49829 flow, removed 705 selfloop flow, removed 13 redundant places. [2024-11-28 02:59:51,250 INFO L231 Difference]: Finished difference. Result has 409 places, 1851 transitions, 47921 flow [2024-11-28 02:59:51,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=23127, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=995, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=47921, PETRI_PLACES=409, PETRI_TRANSITIONS=1851} [2024-11-28 02:59:51,252 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 376 predicate places. [2024-11-28 02:59:51,252 INFO L471 AbstractCegarLoop]: Abstraction has has 409 places, 1851 transitions, 47921 flow [2024-11-28 02:59:51,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 02:59:51,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:51,253 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:51,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:59:51,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 02:59:51,457 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:59:51,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:51,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1520860974, now seen corresponding path program 5 times [2024-11-28 02:59:51,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:51,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269841928] [2024-11-28 02:59:51,458 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:59:51,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:51,467 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:51,467 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:51,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:51,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269841928] [2024-11-28 02:59:51,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269841928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:51,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501022367] [2024-11-28 02:59:51,607 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:59:51,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:51,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:51,610 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:51,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:59:51,655 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:51,655 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:51,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:59:51,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:51,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:51,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501022367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:51,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:51,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2024-11-28 02:59:51,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505206529] [2024-11-28 02:59:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:51,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:59:51,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:51,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:59:51,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:59:51,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 02:59:51,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 1851 transitions, 47921 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 02:59:51,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:51,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 02:59:51,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:58,636 INFO L124 PetriNetUnfolderBase]: 7064/13527 cut-off events. [2024-11-28 02:59:58,636 INFO L125 PetriNetUnfolderBase]: For 310933/310933 co-relation queries the response was YES. [2024-11-28 02:59:58,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116467 conditions, 13527 events. 7064/13527 cut-off events. For 310933/310933 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 116896 event pairs, 977 based on Foata normal form. 124/13651 useless extension candidates. Maximal degree in co-relation 115958. Up to 3840 conditions per place. [2024-11-28 02:59:58,790 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 437 selfloop transitions, 1786 changer transitions 31/2256 dead transitions. [2024-11-28 02:59:58,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 2256 transitions, 62589 flow [2024-11-28 02:59:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:59:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 02:59:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-11-28 02:59:58,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-11-28 02:59:58,791 INFO L175 Difference]: Start difference. First operand has 409 places, 1851 transitions, 47921 flow. Second operand 11 states and 125 transitions. [2024-11-28 02:59:58,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 2256 transitions, 62589 flow [2024-11-28 03:00:05,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 2256 transitions, 60933 flow, removed 184 selfloop flow, removed 8 redundant places. [2024-11-28 03:00:05,520 INFO L231 Difference]: Finished difference. Result has 412 places, 2139 transitions, 58097 flow [2024-11-28 03:00:05,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=46507, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=58097, PETRI_PLACES=412, PETRI_TRANSITIONS=2139} [2024-11-28 03:00:05,522 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 379 predicate places. [2024-11-28 03:00:05,522 INFO L471 AbstractCegarLoop]: Abstraction has has 412 places, 2139 transitions, 58097 flow [2024-11-28 03:00:05,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 03:00:05,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:05,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:05,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:00:05,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:05,727 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:00:05,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1694793342, now seen corresponding path program 3 times [2024-11-28 03:00:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591275317] [2024-11-28 03:00:05,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:00:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:05,736 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:00:05,736 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:05,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:05,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591275317] [2024-11-28 03:00:05,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591275317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:05,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378079431] [2024-11-28 03:00:05,873 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:00:05,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:05,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:05,875 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:05,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:00:05,930 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:00:05,930 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:05,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:00:05,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:06,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:06,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378079431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:06,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:06,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 03:00:06,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343530343] [2024-11-28 03:00:06,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:06,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:00:06,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:06,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:00:06,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:00:06,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:00:06,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 2139 transitions, 58097 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:00:06,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:06,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:00:06,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:17,106 INFO L124 PetriNetUnfolderBase]: 7218/13897 cut-off events. [2024-11-28 03:00:17,106 INFO L125 PetriNetUnfolderBase]: For 340317/340317 co-relation queries the response was YES. [2024-11-28 03:00:17,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120779 conditions, 13897 events. 7218/13897 cut-off events. For 340317/340317 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 121021 event pairs, 552 based on Foata normal form. 150/14047 useless extension candidates. Maximal degree in co-relation 119920. Up to 2588 conditions per place. [2024-11-28 03:00:17,293 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 275 selfloop transitions, 1665 changer transitions 426/2368 dead transitions. [2024-11-28 03:00:17,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 2368 transitions, 65527 flow [2024-11-28 03:00:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-28 03:00:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2024-11-28 03:00:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 580 transitions. [2024-11-28 03:00:17,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26268115942028986 [2024-11-28 03:00:17,296 INFO L175 Difference]: Start difference. First operand has 412 places, 2139 transitions, 58097 flow. Second operand 69 states and 580 transitions. [2024-11-28 03:00:17,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 2368 transitions, 65527 flow [2024-11-28 03:00:24,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 2368 transitions, 64391 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-11-28 03:00:24,651 INFO L231 Difference]: Finished difference. Result has 482 places, 1821 transitions, 51599 flow [2024-11-28 03:00:24,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56987, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1624, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=51599, PETRI_PLACES=482, PETRI_TRANSITIONS=1821} [2024-11-28 03:00:24,652 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 449 predicate places. [2024-11-28 03:00:24,653 INFO L471 AbstractCegarLoop]: Abstraction has has 482 places, 1821 transitions, 51599 flow [2024-11-28 03:00:24,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:00:24,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:24,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:24,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:00:24,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:24,854 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:00:24,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:24,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1229473874, now seen corresponding path program 4 times [2024-11-28 03:00:24,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:24,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744267199] [2024-11-28 03:00:24,855 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:00:24,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:24,864 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:00:24,864 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:24,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744267199] [2024-11-28 03:00:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744267199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041797199] [2024-11-28 03:00:24,989 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:00:24,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:24,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:24,991 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:24,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:00:25,038 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:00:25,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:25,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:00:25,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:25,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041797199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:25,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 03:00:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451174577] [2024-11-28 03:00:25,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:25,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:00:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:25,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:00:25,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:00:25,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:00:25,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 1821 transitions, 51599 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:00:25,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:25,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:00:25,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:32,489 INFO L124 PetriNetUnfolderBase]: 5483/10592 cut-off events. [2024-11-28 03:00:32,489 INFO L125 PetriNetUnfolderBase]: For 287295/287295 co-relation queries the response was YES. [2024-11-28 03:00:32,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96224 conditions, 10592 events. 5483/10592 cut-off events. For 287295/287295 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 87821 event pairs, 423 based on Foata normal form. 15/10607 useless extension candidates. Maximal degree in co-relation 96088. Up to 1983 conditions per place. [2024-11-28 03:00:32,690 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 1646 changer transitions 30/1932 dead transitions. [2024-11-28 03:00:32,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1932 transitions, 56282 flow [2024-11-28 03:00:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 03:00:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-28 03:00:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 369 transitions. [2024-11-28 03:00:32,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26207386363636365 [2024-11-28 03:00:32,693 INFO L175 Difference]: Start difference. First operand has 482 places, 1821 transitions, 51599 flow. Second operand 44 states and 369 transitions. [2024-11-28 03:00:32,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1932 transitions, 56282 flow [2024-11-28 03:00:37,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1932 transitions, 52200 flow, removed 129 selfloop flow, removed 49 redundant places. [2024-11-28 03:00:37,657 INFO L231 Difference]: Finished difference. Result has 457 places, 1815 transitions, 50787 flow [2024-11-28 03:00:37,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=47526, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=50787, PETRI_PLACES=457, PETRI_TRANSITIONS=1815} [2024-11-28 03:00:37,659 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 424 predicate places. [2024-11-28 03:00:37,659 INFO L471 AbstractCegarLoop]: Abstraction has has 457 places, 1815 transitions, 50787 flow [2024-11-28 03:00:37,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:00:37,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:37,659 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:37,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 03:00:37,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:37,860 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:00:37,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1720260264, now seen corresponding path program 6 times [2024-11-28 03:00:37,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:37,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21987942] [2024-11-28 03:00:37,860 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:00:37,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:37,866 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:00:37,866 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:37,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:37,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:37,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21987942] [2024-11-28 03:00:37,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21987942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:37,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822723992] [2024-11-28 03:00:37,979 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:00:37,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:37,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:37,982 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:37,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:00:38,035 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:00:38,035 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:38,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:00:38,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:38,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:38,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822723992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:38,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:38,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 03:00:38,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069850173] [2024-11-28 03:00:38,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:38,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:00:38,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:38,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:00:38,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:00:38,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:00:38,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1815 transitions, 50787 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:00:38,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:38,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:00:38,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:45,323 INFO L124 PetriNetUnfolderBase]: 5524/10672 cut-off events. [2024-11-28 03:00:45,323 INFO L125 PetriNetUnfolderBase]: For 276410/276410 co-relation queries the response was YES. [2024-11-28 03:00:45,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96089 conditions, 10672 events. 5524/10672 cut-off events. For 276410/276410 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 88853 event pairs, 666 based on Foata normal form. 68/10740 useless extension candidates. Maximal degree in co-relation 95632. Up to 3493 conditions per place. [2024-11-28 03:00:45,477 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 723 selfloop transitions, 1097 changer transitions 72/1894 dead transitions. [2024-11-28 03:00:45,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1894 transitions, 55993 flow [2024-11-28 03:00:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:00:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 03:00:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 190 transitions. [2024-11-28 03:00:45,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-11-28 03:00:45,478 INFO L175 Difference]: Start difference. First operand has 457 places, 1815 transitions, 50787 flow. Second operand 19 states and 190 transitions. [2024-11-28 03:00:45,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1894 transitions, 55993 flow [2024-11-28 03:00:49,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 1894 transitions, 52660 flow, removed 25 selfloop flow, removed 37 redundant places. [2024-11-28 03:00:49,692 INFO L231 Difference]: Finished difference. Result has 430 places, 1792 transitions, 49225 flow [2024-11-28 03:00:49,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=47530, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=49225, PETRI_PLACES=430, PETRI_TRANSITIONS=1792} [2024-11-28 03:00:49,693 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 397 predicate places. [2024-11-28 03:00:49,694 INFO L471 AbstractCegarLoop]: Abstraction has has 430 places, 1792 transitions, 49225 flow [2024-11-28 03:00:49,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:00:49,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:49,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:49,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 03:00:49,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:49,894 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:00:49,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:49,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1708448616, now seen corresponding path program 7 times [2024-11-28 03:00:49,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:49,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062347514] [2024-11-28 03:00:49,895 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:00:49,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:50,014 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 03:00:50,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:50,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062347514] [2024-11-28 03:00:50,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062347514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:50,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:50,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:00:50,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169767797] [2024-11-28 03:00:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:50,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:00:50,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:50,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:00:50,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:00:50,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 03:00:50,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1792 transitions, 49225 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 03:00:50,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:50,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 03:00:50,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:56,236 INFO L124 PetriNetUnfolderBase]: 5281/10191 cut-off events. [2024-11-28 03:00:56,237 INFO L125 PetriNetUnfolderBase]: For 257618/257618 co-relation queries the response was YES. [2024-11-28 03:00:56,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91070 conditions, 10191 events. 5281/10191 cut-off events. For 257618/257618 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 84122 event pairs, 671 based on Foata normal form. 4/10195 useless extension candidates. Maximal degree in co-relation 90359. Up to 5057 conditions per place. [2024-11-28 03:00:56,403 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 919 selfloop transitions, 906 changer transitions 1/1828 dead transitions. [2024-11-28 03:00:56,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 1828 transitions, 53278 flow [2024-11-28 03:00:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:00:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:00:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 203 transitions. [2024-11-28 03:00:56,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37316176470588236 [2024-11-28 03:00:56,405 INFO L175 Difference]: Start difference. First operand has 430 places, 1792 transitions, 49225 flow. Second operand 17 states and 203 transitions. [2024-11-28 03:00:56,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 1828 transitions, 53278 flow [2024-11-28 03:01:00,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 1828 transitions, 52062 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-11-28 03:01:00,319 INFO L231 Difference]: Finished difference. Result has 433 places, 1799 transitions, 50084 flow [2024-11-28 03:01:00,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=48021, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=899, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=50084, PETRI_PLACES=433, PETRI_TRANSITIONS=1799} [2024-11-28 03:01:00,321 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 400 predicate places. [2024-11-28 03:01:00,321 INFO L471 AbstractCegarLoop]: Abstraction has has 433 places, 1799 transitions, 50084 flow [2024-11-28 03:01:00,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 03:01:00,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:00,321 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:00,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 03:01:00,321 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:01:00,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash -801590994, now seen corresponding path program 8 times [2024-11-28 03:01:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:00,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900429058] [2024-11-28 03:01:00,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:01:00,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:00,327 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:01:00,328 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:00,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:00,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900429058] [2024-11-28 03:01:00,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900429058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:00,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205084590] [2024-11-28 03:01:00,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:01:00,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:00,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:00,442 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:00,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:01:00,498 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:01:00,498 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:00,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:01:00,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:00,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:00,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205084590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:00,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:00,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 03:01:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553356264] [2024-11-28 03:01:00,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:00,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:01:00,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:00,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:01:00,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:01:01,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:01:01,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1799 transitions, 50084 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:01:01,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:01,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:01:01,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:08,808 INFO L124 PetriNetUnfolderBase]: 6331/12214 cut-off events. [2024-11-28 03:01:08,808 INFO L125 PetriNetUnfolderBase]: For 316237/316237 co-relation queries the response was YES. [2024-11-28 03:01:08,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109366 conditions, 12214 events. 6331/12214 cut-off events. For 316237/316237 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 103805 event pairs, 581 based on Foata normal form. 132/12346 useless extension candidates. Maximal degree in co-relation 108634. Up to 2585 conditions per place. [2024-11-28 03:01:08,970 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 404 selfloop transitions, 1773 changer transitions 85/2264 dead transitions. [2024-11-28 03:01:08,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 2264 transitions, 65160 flow [2024-11-28 03:01:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 03:01:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-28 03:01:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 444 transitions. [2024-11-28 03:01:08,972 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2775 [2024-11-28 03:01:08,972 INFO L175 Difference]: Start difference. First operand has 433 places, 1799 transitions, 50084 flow. Second operand 50 states and 444 transitions. [2024-11-28 03:01:08,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 2264 transitions, 65160 flow [2024-11-28 03:01:14,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 2264 transitions, 63291 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-28 03:01:14,096 INFO L231 Difference]: Finished difference. Result has 482 places, 2061 transitions, 59554 flow [2024-11-28 03:01:14,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=48544, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1476, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=59554, PETRI_PLACES=482, PETRI_TRANSITIONS=2061} [2024-11-28 03:01:14,097 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 449 predicate places. [2024-11-28 03:01:14,098 INFO L471 AbstractCegarLoop]: Abstraction has has 482 places, 2061 transitions, 59554 flow [2024-11-28 03:01:14,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:01:14,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:14,098 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:14,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:14,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 03:01:14,298 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:01:14,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:14,299 INFO L85 PathProgramCache]: Analyzing trace with hash 272671994, now seen corresponding path program 9 times [2024-11-28 03:01:14,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:14,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746147249] [2024-11-28 03:01:14,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:01:14,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:14,304 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 03:01:14,304 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:14,407 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 03:01:14,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:14,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746147249] [2024-11-28 03:01:14,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746147249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:14,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:14,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:01:14,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150796645] [2024-11-28 03:01:14,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:14,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:01:14,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:14,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:01:14,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:01:14,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 03:01:14,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 2061 transitions, 59554 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 03:01:14,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:14,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 03:01:14,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:21,447 INFO L124 PetriNetUnfolderBase]: 5989/11486 cut-off events. [2024-11-28 03:01:21,447 INFO L125 PetriNetUnfolderBase]: For 309104/309104 co-relation queries the response was YES. [2024-11-28 03:01:21,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106876 conditions, 11486 events. 5989/11486 cut-off events. For 309104/309104 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 95712 event pairs, 1004 based on Foata normal form. 4/11490 useless extension candidates. Maximal degree in co-relation 106776. Up to 5517 conditions per place. [2024-11-28 03:01:21,618 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 969 selfloop transitions, 1114 changer transitions 1/2086 dead transitions. [2024-11-28 03:01:21,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 2086 transitions, 63889 flow [2024-11-28 03:01:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:01:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 03:01:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 189 transitions. [2024-11-28 03:01:21,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.369140625 [2024-11-28 03:01:21,620 INFO L175 Difference]: Start difference. First operand has 482 places, 2061 transitions, 59554 flow. Second operand 16 states and 189 transitions. [2024-11-28 03:01:21,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 2086 transitions, 63889 flow [2024-11-28 03:01:26,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 2086 transitions, 61543 flow, removed 126 selfloop flow, removed 24 redundant places. [2024-11-28 03:01:26,365 INFO L231 Difference]: Finished difference. Result has 468 places, 2063 transitions, 59506 flow [2024-11-28 03:01:26,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57208, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=59506, PETRI_PLACES=468, PETRI_TRANSITIONS=2063} [2024-11-28 03:01:26,367 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 435 predicate places. [2024-11-28 03:01:26,367 INFO L471 AbstractCegarLoop]: Abstraction has has 468 places, 2063 transitions, 59506 flow [2024-11-28 03:01:26,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 03:01:26,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:26,367 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:26,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-28 03:01:26,367 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:01:26,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash -927882202, now seen corresponding path program 10 times [2024-11-28 03:01:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255030630] [2024-11-28 03:01:26,368 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:01:26,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:26,374 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:01:26,374 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:26,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:26,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255030630] [2024-11-28 03:01:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255030630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:26,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254367679] [2024-11-28 03:01:26,491 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:01:26,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:26,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:26,493 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:26,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:01:26,539 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:01:26,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:26,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:01:26,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:26,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:26,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254367679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:26,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:26,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 03:01:26,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98487688] [2024-11-28 03:01:26,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:26,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:01:26,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:26,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:01:26,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:01:26,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:01:26,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 2063 transitions, 59506 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:01:26,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:26,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:01:26,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:36,961 INFO L124 PetriNetUnfolderBase]: 7151/13880 cut-off events. [2024-11-28 03:01:36,961 INFO L125 PetriNetUnfolderBase]: For 376401/376401 co-relation queries the response was YES. [2024-11-28 03:01:37,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125705 conditions, 13880 events. 7151/13880 cut-off events. For 376401/376401 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 120697 event pairs, 454 based on Foata normal form. 228/14108 useless extension candidates. Maximal degree in co-relation 125609. Up to 2608 conditions per place. [2024-11-28 03:01:37,170 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 376 selfloop transitions, 2158 changer transitions 94/2630 dead transitions. [2024-11-28 03:01:37,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 2630 transitions, 77481 flow [2024-11-28 03:01:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-28 03:01:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-28 03:01:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 688 transitions. [2024-11-28 03:01:37,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2721518987341772 [2024-11-28 03:01:37,173 INFO L175 Difference]: Start difference. First operand has 468 places, 2063 transitions, 59506 flow. Second operand 79 states and 688 transitions. [2024-11-28 03:01:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 2630 transitions, 77481 flow [2024-11-28 03:01:43,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 2630 transitions, 75496 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-28 03:01:43,068 INFO L231 Difference]: Finished difference. Result has 549 places, 2361 transitions, 71410 flow [2024-11-28 03:01:43,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57731, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1821, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=71410, PETRI_PLACES=549, PETRI_TRANSITIONS=2361} [2024-11-28 03:01:43,070 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 516 predicate places. [2024-11-28 03:01:43,070 INFO L471 AbstractCegarLoop]: Abstraction has has 549 places, 2361 transitions, 71410 flow [2024-11-28 03:01:43,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:01:43,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:43,070 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:43,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:01:43,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 03:01:43,271 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:01:43,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1582988282, now seen corresponding path program 11 times [2024-11-28 03:01:43,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:43,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363252569] [2024-11-28 03:01:43,271 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:01:43,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:43,278 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:01:43,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:43,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:43,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363252569] [2024-11-28 03:01:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363252569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520218278] [2024-11-28 03:01:43,395 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:01:43,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:43,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:43,397 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:43,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:01:43,438 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:01:43,438 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:43,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:01:43,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:43,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:43,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520218278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:43,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:43,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 03:01:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798317865] [2024-11-28 03:01:43,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:43,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:01:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:43,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:01:43,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:01:43,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:01:43,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 2361 transitions, 71410 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:01:43,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:43,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:01:43,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:53,790 INFO L124 PetriNetUnfolderBase]: 6959/13492 cut-off events. [2024-11-28 03:01:53,791 INFO L125 PetriNetUnfolderBase]: For 391276/391276 co-relation queries the response was YES. [2024-11-28 03:01:53,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128220 conditions, 13492 events. 6959/13492 cut-off events. For 391276/391276 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 116040 event pairs, 264 based on Foata normal form. 112/13604 useless extension candidates. Maximal degree in co-relation 128108. Up to 2494 conditions per place. [2024-11-28 03:01:53,994 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 1811 changer transitions 563/2473 dead transitions. [2024-11-28 03:01:53,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 2473 transitions, 77475 flow [2024-11-28 03:01:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 03:01:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-28 03:01:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 386 transitions. [2024-11-28 03:01:53,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2513020833333333 [2024-11-28 03:01:53,996 INFO L175 Difference]: Start difference. First operand has 549 places, 2361 transitions, 71410 flow. Second operand 48 states and 386 transitions. [2024-11-28 03:01:53,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 2473 transitions, 77475 flow [2024-11-28 03:01:59,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 2473 transitions, 74533 flow, removed 216 selfloop flow, removed 33 redundant places. [2024-11-28 03:01:59,301 INFO L231 Difference]: Finished difference. Result has 553 places, 1854 transitions, 57104 flow [2024-11-28 03:01:59,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=68430, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1785, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=57104, PETRI_PLACES=553, PETRI_TRANSITIONS=1854} [2024-11-28 03:01:59,302 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 520 predicate places. [2024-11-28 03:01:59,302 INFO L471 AbstractCegarLoop]: Abstraction has has 553 places, 1854 transitions, 57104 flow [2024-11-28 03:01:59,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 03:01:59,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:59,303 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:59,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:01:59,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 03:01:59,503 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:01:59,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash -658841277, now seen corresponding path program 5 times [2024-11-28 03:01:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:59,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421285533] [2024-11-28 03:01:59,504 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:01:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:59,509 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:01:59,509 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:59,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421285533] [2024-11-28 03:01:59,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421285533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361795248] [2024-11-28 03:01:59,578 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:01:59,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:59,580 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:59,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:01:59,626 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:01:59,626 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:59,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:01:59,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:59,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361795248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:59,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:59,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:01:59,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114828616] [2024-11-28 03:01:59,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:59,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:01:59,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:59,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:01:59,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:01:59,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:01:59,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1854 transitions, 57104 flow. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 03:01:59,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:59,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:01:59,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:02:04,607 INFO L124 PetriNetUnfolderBase]: 4459/8676 cut-off events. [2024-11-28 03:02:04,607 INFO L125 PetriNetUnfolderBase]: For 263452/263452 co-relation queries the response was YES. [2024-11-28 03:02:04,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90103 conditions, 8676 events. 4459/8676 cut-off events. For 263452/263452 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 69358 event pairs, 276 based on Foata normal form. 103/8779 useless extension candidates. Maximal degree in co-relation 90003. Up to 2770 conditions per place. [2024-11-28 03:02:04,723 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 350 selfloop transitions, 1621 changer transitions 2/1975 dead transitions. [2024-11-28 03:02:04,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1975 transitions, 63847 flow [2024-11-28 03:02:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:02:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:02:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 163 transitions. [2024-11-28 03:02:04,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29963235294117646 [2024-11-28 03:02:04,725 INFO L175 Difference]: Start difference. First operand has 553 places, 1854 transitions, 57104 flow. Second operand 17 states and 163 transitions. [2024-11-28 03:02:04,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1975 transitions, 63847 flow [2024-11-28 03:02:06,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 1975 transitions, 54193 flow, removed 67 selfloop flow, removed 37 redundant places. [2024-11-28 03:02:06,994 INFO L231 Difference]: Finished difference. Result has 481 places, 1917 transitions, 54559 flow [2024-11-28 03:02:06,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=47523, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=54559, PETRI_PLACES=481, PETRI_TRANSITIONS=1917} [2024-11-28 03:02:06,996 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 448 predicate places. [2024-11-28 03:02:06,996 INFO L471 AbstractCegarLoop]: Abstraction has has 481 places, 1917 transitions, 54559 flow [2024-11-28 03:02:06,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 03:02:06,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:02:06,996 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:07,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:07,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 03:02:07,197 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:02:07,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash 748417753, now seen corresponding path program 6 times [2024-11-28 03:02:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401747075] [2024-11-28 03:02:07,197 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:02:07,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:07,203 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:02:07,203 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:02:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:07,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401747075] [2024-11-28 03:02:07,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401747075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:07,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462642441] [2024-11-28 03:02:07,329 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:02:07,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:07,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:07,331 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:07,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:02:07,370 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:02:07,370 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:02:07,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:02:07,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:07,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:02:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:02:07,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462642441] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:07,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:02:07,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 23 [2024-11-28 03:02:07,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148990335] [2024-11-28 03:02:07,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:07,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:02:07,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:07,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:02:07,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:02:07,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:02:07,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 1917 transitions, 54559 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 03:02:07,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:02:07,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:02:07,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:02:12,584 INFO L124 PetriNetUnfolderBase]: 5055/9885 cut-off events. [2024-11-28 03:02:12,584 INFO L125 PetriNetUnfolderBase]: For 264976/264976 co-relation queries the response was YES. [2024-11-28 03:02:12,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95121 conditions, 9885 events. 5055/9885 cut-off events. For 264976/264976 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 81484 event pairs, 495 based on Foata normal form. 15/9900 useless extension candidates. Maximal degree in co-relation 95035. Up to 2919 conditions per place. [2024-11-28 03:02:12,719 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 397 selfloop transitions, 1840 changer transitions 0/2239 dead transitions. [2024-11-28 03:02:12,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 2239 transitions, 67436 flow [2024-11-28 03:02:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:02:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 03:02:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 152 transitions. [2024-11-28 03:02:12,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-11-28 03:02:12,720 INFO L175 Difference]: Start difference. First operand has 481 places, 1917 transitions, 54559 flow. Second operand 15 states and 152 transitions. [2024-11-28 03:02:12,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 2239 transitions, 67436 flow [2024-11-28 03:02:15,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 2239 transitions, 66361 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-11-28 03:02:15,638 INFO L231 Difference]: Finished difference. Result has 488 places, 2135 transitions, 66408 flow [2024-11-28 03:02:15,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=53562, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1622, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=66408, PETRI_PLACES=488, PETRI_TRANSITIONS=2135} [2024-11-28 03:02:15,640 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 455 predicate places. [2024-11-28 03:02:15,640 INFO L471 AbstractCegarLoop]: Abstraction has has 488 places, 2135 transitions, 66408 flow [2024-11-28 03:02:15,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 03:02:15,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:02:15,640 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:15,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 03:02:15,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:15,841 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:02:15,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1840664905, now seen corresponding path program 7 times [2024-11-28 03:02:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735433190] [2024-11-28 03:02:15,841 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:02:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:02:15,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:15,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735433190] [2024-11-28 03:02:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735433190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:15,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:15,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:02:15,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694476891] [2024-11-28 03:02:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:15,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:02:15,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:15,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:02:15,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:02:15,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-28 03:02:15,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 2135 transitions, 66408 flow. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:02:15,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:02:15,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-28 03:02:15,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:02:21,669 INFO L124 PetriNetUnfolderBase]: 5408/10562 cut-off events. [2024-11-28 03:02:21,669 INFO L125 PetriNetUnfolderBase]: For 347670/347670 co-relation queries the response was YES. [2024-11-28 03:02:21,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109525 conditions, 10562 events. 5408/10562 cut-off events. For 347670/347670 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 88169 event pairs, 294 based on Foata normal form. 15/10577 useless extension candidates. Maximal degree in co-relation 109435. Up to 3883 conditions per place. [2024-11-28 03:02:21,822 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 380 selfloop transitions, 1972 changer transitions 0/2354 dead transitions. [2024-11-28 03:02:21,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 2354 transitions, 76917 flow [2024-11-28 03:02:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:02:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 03:02:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 257 transitions. [2024-11-28 03:02:21,823 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3491847826086957 [2024-11-28 03:02:21,824 INFO L175 Difference]: Start difference. First operand has 488 places, 2135 transitions, 66408 flow. Second operand 23 states and 257 transitions. [2024-11-28 03:02:21,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 2354 transitions, 76917 flow [2024-11-28 03:02:25,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 2354 transitions, 76654 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-28 03:02:25,695 INFO L231 Difference]: Finished difference. Result has 506 places, 2278 transitions, 77548 flow [2024-11-28 03:02:25,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=66151, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1829, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=77548, PETRI_PLACES=506, PETRI_TRANSITIONS=2278} [2024-11-28 03:02:25,696 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 473 predicate places. [2024-11-28 03:02:25,696 INFO L471 AbstractCegarLoop]: Abstraction has has 506 places, 2278 transitions, 77548 flow [2024-11-28 03:02:25,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:02:25,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:02:25,697 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:25,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-28 03:02:25,697 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 03:02:25,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1649810483, now seen corresponding path program 8 times [2024-11-28 03:02:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229852025] [2024-11-28 03:02:25,698 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:02:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:25,702 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:02:25,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:02:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:02:25,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:25,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229852025] [2024-11-28 03:02:25,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229852025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:25,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533173288] [2024-11-28 03:02:25,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:02:25,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:25,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:25,852 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:25,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36259ec-120d-4de5-94a2-f09de6eb31a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:02:25,898 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:02:25,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:02:25,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:02:25,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:02:26,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:02:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:02:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533173288] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:26,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:02:26,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 24 [2024-11-28 03:02:26,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245462103] [2024-11-28 03:02:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:26,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:02:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:26,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:02:26,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:02:26,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-28 03:02:26,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 2278 transitions, 77548 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 03:02:26,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:02:26,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-28 03:02:26,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand