./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd --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 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:57:54,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:57:54,647 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 15:57:54,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:57:54,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:57:54,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:57:54,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:57:54,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:57:54,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:57:54,678 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:57:54,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:57:54,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:57:54,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:57:54,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:57:54,679 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:57:54,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:57:54,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:57:54,679 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:57:54,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:57:54,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:57:54,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:57:54,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:57:54,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:57:54,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:57:54,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:57:54,680 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 15:57:54,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:57:54,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:57:54,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:57:54,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:57:54,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:57:54,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:57:54,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:57:54,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:57:54,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:57:54,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:57:54,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:57:54,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:57:54,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:57:54,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:57:54,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:57:54,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:57:54,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:57:54,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:57:54,683 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_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd 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 -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2024-11-13 15:57:54,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:57:54,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:57:54,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:57:54,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:57:54,961 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:57:54,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread/queue_ok.i Unable to find full path for "g++" [2024-11-13 15:57:56,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:57:57,330 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:57:57,331 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/sv-benchmarks/c/pthread/queue_ok.i [2024-11-13 15:57:57,348 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/data/de0d6d864/a7f2ed451270469eacdbffc4020e481a/FLAGcef07b9e6 [2024-11-13 15:57:57,363 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/data/de0d6d864/a7f2ed451270469eacdbffc4020e481a [2024-11-13 15:57:57,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:57:57,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:57:57,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:57:57,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:57:57,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:57:57,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:57:57" (1/1) ... [2024-11-13 15:57:57,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5043ce49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:57, skipping insertion in model container [2024-11-13 15:57:57,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:57:57" (1/1) ... [2024-11-13 15:57:57,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:57:57,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:57:57,966 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:57:58,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:57:58,086 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:57:58,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58 WrapperNode [2024-11-13 15:57:58,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:57:58,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:57:58,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:57:58,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:57:58,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,143 INFO L138 Inliner]: procedures = 277, calls = 97, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 254 [2024-11-13 15:57:58,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:57:58,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:57:58,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:57:58,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:57:58,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,183 INFO L175 MemorySlicer]: Split 78 memory accesses to 4 slices as follows [2, 8, 22, 46]. 59 percent of accesses are in the largest equivalence class. The 53 initializations are split as follows [2, 8, 20, 23]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-13 15:57:58,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:57:58,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:57:58,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:57:58,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:57:58,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (1/1) ... [2024-11-13 15:57:58,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:57:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:58,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:57:58,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:57:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-13 15:57:58,283 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-13 15:57:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-13 15:57:58,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-13 15:57:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:57:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 15:57:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:57:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:57:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:57:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:57:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:57:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 15:57:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:57:58,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:57:58,289 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:57:58,471 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:57:58,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:57:59,052 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:57:59,052 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:57:59,710 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:57:59,710 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:57:59,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:57:59 BoogieIcfgContainer [2024-11-13 15:57:59,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:57:59,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:57:59,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:57:59,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:57:59,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:57:57" (1/3) ... [2024-11-13 15:57:59,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246b36e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:57:59, skipping insertion in model container [2024-11-13 15:57:59,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:58" (2/3) ... [2024-11-13 15:57:59,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246b36e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:57:59, skipping insertion in model container [2024-11-13 15:57:59,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:57:59" (3/3) ... [2024-11-13 15:57:59,746 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2024-11-13 15:57:59,764 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:57:59,767 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG queue_ok.i that has 3 procedures, 55 locations, 1 initial locations, 2 loop locations, and 12 error locations. [2024-11-13 15:57:59,767 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:57:59,848 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:57:59,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 61 transitions, 136 flow [2024-11-13 15:57:59,979 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-13 15:57:59,983 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:57:59,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 7/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 175 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-11-13 15:57:59,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 61 transitions, 136 flow [2024-11-13 15:57:59,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 123 flow [2024-11-13 15:58:00,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:58:00,036 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;@efdb332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:58:00,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-13 15:58:00,060 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:58:00,060 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-13 15:58:00,060 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:58:00,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:00,061 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:00,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:00,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1820921918, now seen corresponding path program 1 times [2024-11-13 15:58:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:00,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346346930] [2024-11-13 15:58:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:00,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:01,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346346930] [2024-11-13 15:58:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346346930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:01,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:01,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:58:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135541244] [2024-11-13 15:58:01,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:01,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:58:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:58:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:58:01,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:58:01,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:01,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:01,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:58:01,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:02,107 INFO L124 PetriNetUnfolderBase]: 1022/2058 cut-off events. [2024-11-13 15:58:02,108 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-13 15:58:02,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 2058 events. 1022/2058 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13212 event pairs, 209 based on Foata normal form. 28/1694 useless extension candidates. Maximal degree in co-relation 3564. Up to 1033 conditions per place. [2024-11-13 15:58:02,145 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 73 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2024-11-13 15:58:02,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 372 flow [2024-11-13 15:58:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:58:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:58:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-13 15:58:02,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7008196721311475 [2024-11-13 15:58:02,172 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 123 flow. Second operand 4 states and 171 transitions. [2024-11-13 15:58:02,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 372 flow [2024-11-13 15:58:02,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 363 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:58:02,193 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 156 flow [2024-11-13 15:58:02,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-11-13 15:58:02,203 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-11-13 15:58:02,204 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 156 flow [2024-11-13 15:58:02,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:02,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:02,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:02,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:58:02,207 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:02,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -614003901, now seen corresponding path program 1 times [2024-11-13 15:58:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125271069] [2024-11-13 15:58:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:02,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:02,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:02,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125271069] [2024-11-13 15:58:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125271069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:02,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:02,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:58:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601866078] [2024-11-13 15:58:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:02,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:58:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:02,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:58:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:58:02,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:58:02,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:02,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:02,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:58:02,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:03,503 INFO L124 PetriNetUnfolderBase]: 1017/2063 cut-off events. [2024-11-13 15:58:03,503 INFO L125 PetriNetUnfolderBase]: For 425/429 co-relation queries the response was YES. [2024-11-13 15:58:03,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 2063 events. 1017/2063 cut-off events. For 425/429 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13211 event pairs, 213 based on Foata normal form. 46/1819 useless extension candidates. Maximal degree in co-relation 3538. Up to 1122 conditions per place. [2024-11-13 15:58:03,519 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 81 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-11-13 15:58:03,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 435 flow [2024-11-13 15:58:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:58:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:58:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-11-13 15:58:03,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6688524590163935 [2024-11-13 15:58:03,522 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 156 flow. Second operand 5 states and 204 transitions. [2024-11-13 15:58:03,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 435 flow [2024-11-13 15:58:03,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 108 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:58:03,526 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 174 flow [2024-11-13 15:58:03,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-13 15:58:03,527 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-11-13 15:58:03,527 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 174 flow [2024-11-13 15:58:03,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:03,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:03,527 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:03,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:58:03,527 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:03,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1667319477, now seen corresponding path program 1 times [2024-11-13 15:58:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643900006] [2024-11-13 15:58:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:03,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643900006] [2024-11-13 15:58:03,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643900006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:03,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:03,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:58:03,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996886179] [2024-11-13 15:58:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:03,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:58:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:58:03,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:03,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-13 15:58:03,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2024-11-13 15:58:03,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:03,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-13 15:58:03,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:03,929 INFO L124 PetriNetUnfolderBase]: 473/1087 cut-off events. [2024-11-13 15:58:03,930 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-11-13 15:58:03,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 1087 events. 473/1087 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6373 event pairs, 266 based on Foata normal form. 27/998 useless extension candidates. Maximal degree in co-relation 1822. Up to 444 conditions per place. [2024-11-13 15:58:03,939 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 39 selfloop transitions, 2 changer transitions 6/70 dead transitions. [2024-11-13 15:58:03,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 277 flow [2024-11-13 15:58:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:58:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:58:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-13 15:58:03,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-11-13 15:58:03,942 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 174 flow. Second operand 3 states and 120 transitions. [2024-11-13 15:58:03,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 277 flow [2024-11-13 15:58:03,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 264 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 15:58:03,947 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 153 flow [2024-11-13 15:58:03,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-13 15:58:03,949 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2024-11-13 15:58:03,949 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 153 flow [2024-11-13 15:58:03,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2024-11-13 15:58:03,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:03,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:03,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:58:03,950 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:03,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:03,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1647206586, now seen corresponding path program 1 times [2024-11-13 15:58:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275820348] [2024-11-13 15:58:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:04,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:04,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275820348] [2024-11-13 15:58:04,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275820348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:04,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:04,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:58:04,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073334328] [2024-11-13 15:58:04,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:04,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:58:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:58:04,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:58:04,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:58:04,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:04,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:04,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:58:04,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:05,248 INFO L124 PetriNetUnfolderBase]: 535/1181 cut-off events. [2024-11-13 15:58:05,248 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-13 15:58:05,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 1181 events. 535/1181 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6827 event pairs, 179 based on Foata normal form. 12/1067 useless extension candidates. Maximal degree in co-relation 1970. Up to 425 conditions per place. [2024-11-13 15:58:05,255 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 78 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2024-11-13 15:58:05,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 441 flow [2024-11-13 15:58:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:58:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:58:05,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-11-13 15:58:05,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5831381733021077 [2024-11-13 15:58:05,258 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 153 flow. Second operand 7 states and 249 transitions. [2024-11-13 15:58:05,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 441 flow [2024-11-13 15:58:05,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:58:05,261 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 201 flow [2024-11-13 15:58:05,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-11-13 15:58:05,262 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-11-13 15:58:05,262 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 201 flow [2024-11-13 15:58:05,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:05,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:05,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:05,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:58:05,263 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:05,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash 476205096, now seen corresponding path program 1 times [2024-11-13 15:58:05,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:05,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550242681] [2024-11-13 15:58:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:05,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:05,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550242681] [2024-11-13 15:58:05,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550242681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:05,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:05,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:58:05,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119165344] [2024-11-13 15:58:05,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:05,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:58:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:05,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:58:05,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:58:05,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:58:05,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:05,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:05,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:58:05,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:05,771 INFO L124 PetriNetUnfolderBase]: 455/1019 cut-off events. [2024-11-13 15:58:05,772 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-11-13 15:58:05,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 1019 events. 455/1019 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5509 event pairs, 308 based on Foata normal form. 24/984 useless extension candidates. Maximal degree in co-relation 1918. Up to 618 conditions per place. [2024-11-13 15:58:05,779 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 54 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-13 15:58:05,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 347 flow [2024-11-13 15:58:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:58:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:58:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-13 15:58:05,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6188524590163934 [2024-11-13 15:58:05,782 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 201 flow. Second operand 4 states and 151 transitions. [2024-11-13 15:58:05,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 347 flow [2024-11-13 15:58:05,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 341 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-13 15:58:05,790 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 215 flow [2024-11-13 15:58:05,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2024-11-13 15:58:05,791 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-11-13 15:58:05,791 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 215 flow [2024-11-13 15:58:05,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:05,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:05,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:05,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:58:05,792 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:05,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash 476204102, now seen corresponding path program 1 times [2024-11-13 15:58:05,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:05,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129057130] [2024-11-13 15:58:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:05,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:06,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:06,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129057130] [2024-11-13 15:58:06,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129057130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:06,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:58:06,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852675968] [2024-11-13 15:58:06,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:06,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:58:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:58:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:58:06,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:58:06,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:06,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:06,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:58:06,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:06,665 INFO L124 PetriNetUnfolderBase]: 455/1007 cut-off events. [2024-11-13 15:58:06,665 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-11-13 15:58:06,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 1007 events. 455/1007 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5364 event pairs, 118 based on Foata normal form. 12/976 useless extension candidates. Maximal degree in co-relation 1974. Up to 550 conditions per place. [2024-11-13 15:58:06,672 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 65 selfloop transitions, 6 changer transitions 3/95 dead transitions. [2024-11-13 15:58:06,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 430 flow [2024-11-13 15:58:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:58:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:58:06,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-11-13 15:58:06,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-11-13 15:58:06,674 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 215 flow. Second operand 6 states and 210 transitions. [2024-11-13 15:58:06,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 430 flow [2024-11-13 15:58:06,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:58:06,679 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 221 flow [2024-11-13 15:58:06,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-11-13 15:58:06,680 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-11-13 15:58:06,680 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 221 flow [2024-11-13 15:58:06,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:06,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:06,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:06,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:58:06,681 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:06,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:06,681 INFO L85 PathProgramCache]: Analyzing trace with hash 349750668, now seen corresponding path program 1 times [2024-11-13 15:58:06,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:06,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303275885] [2024-11-13 15:58:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:06,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303275885] [2024-11-13 15:58:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303275885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:07,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:58:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284044755] [2024-11-13 15:58:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:07,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:58:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:58:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:58:07,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-13 15:58:07,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:07,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:07,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-13 15:58:07,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:07,486 INFO L124 PetriNetUnfolderBase]: 413/965 cut-off events. [2024-11-13 15:58:07,486 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-11-13 15:58:07,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 965 events. 413/965 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5205 event pairs, 118 based on Foata normal form. 12/934 useless extension candidates. Maximal degree in co-relation 1823. Up to 484 conditions per place. [2024-11-13 15:58:07,492 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 56 selfloop transitions, 5 changer transitions 3/87 dead transitions. [2024-11-13 15:58:07,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 398 flow [2024-11-13 15:58:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:58:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:58:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-13 15:58:07,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131147540983607 [2024-11-13 15:58:07,494 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 221 flow. Second operand 5 states and 187 transitions. [2024-11-13 15:58:07,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 398 flow [2024-11-13 15:58:07,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 87 transitions, 385 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 15:58:07,498 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 212 flow [2024-11-13 15:58:07,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-11-13 15:58:07,499 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-13 15:58:07,500 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 212 flow [2024-11-13 15:58:07,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:07,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:07,500 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:07,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:58:07,500 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:07,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:07,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1589688726, now seen corresponding path program 1 times [2024-11-13 15:58:07,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:07,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381215255] [2024-11-13 15:58:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:07,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:08,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:08,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381215255] [2024-11-13 15:58:08,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381215255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:08,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862505734] [2024-11-13 15:58:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:08,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:08,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:08,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:08,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:58:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:08,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:58:08,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:09,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:58:09,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 15:58:09,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2024-11-13 15:58:09,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:58:09,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-11-13 15:58:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:09,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:09,652 INFO L349 Elim1Store]: treesize reduction 47, result has 53.5 percent of original size [2024-11-13 15:58:09,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 438 treesize of output 343 [2024-11-13 15:58:09,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:58:09,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 169 [2024-11-13 15:58:09,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-13 15:58:09,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:58:09,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 180 [2024-11-13 15:58:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:10,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862505734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:10,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:10,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-13 15:58:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465007349] [2024-11-13 15:58:10,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:10,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:58:10,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:58:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:58:10,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-13 15:58:10,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 212 flow. Second operand has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:10,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:10,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-13 15:58:10,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:11,969 INFO L124 PetriNetUnfolderBase]: 784/1687 cut-off events. [2024-11-13 15:58:11,969 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-11-13 15:58:11,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3779 conditions, 1687 events. 784/1687 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9434 event pairs, 123 based on Foata normal form. 24/1626 useless extension candidates. Maximal degree in co-relation 3186. Up to 250 conditions per place. [2024-11-13 15:58:11,981 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 128 selfloop transitions, 17 changer transitions 3/166 dead transitions. [2024-11-13 15:58:11,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 166 transitions, 764 flow [2024-11-13 15:58:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:58:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:58:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 427 transitions. [2024-11-13 15:58:11,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 15:58:11,986 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 212 flow. Second operand 14 states and 427 transitions. [2024-11-13 15:58:11,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 166 transitions, 764 flow [2024-11-13 15:58:11,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 166 transitions, 754 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:58:11,991 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 273 flow [2024-11-13 15:58:11,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=273, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-11-13 15:58:11,995 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2024-11-13 15:58:11,995 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 273 flow [2024-11-13 15:58:11,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:11,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:11,995 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:12,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:58:12,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:12,200 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:12,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2035709541, now seen corresponding path program 1 times [2024-11-13 15:58:12,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:12,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90730535] [2024-11-13 15:58:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:12,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90730535] [2024-11-13 15:58:13,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90730535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236498864] [2024-11-13 15:58:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:13,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:13,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:13,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:13,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:58:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:13,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 15:58:13,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:13,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-13 15:58:13,594 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2024-11-13 15:58:13,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 49 [2024-11-13 15:58:13,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-13 15:58:13,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-13 15:58:13,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2024-11-13 15:58:13,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-13 15:58:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:13,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:17,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236498864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:17,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:17,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-13 15:58:17,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706659613] [2024-11-13 15:58:17,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:17,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:58:17,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:17,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:58:17,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=257, Unknown=1, NotChecked=0, Total=342 [2024-11-13 15:58:21,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:58:24,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:58:26,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:58:29,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:58:32,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:58:34,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:58:34,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2024-11-13 15:58:34,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 273 flow. Second operand has 19 states, 19 states have (on average 21.42105263157895) internal successors, (407), 19 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:34,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:34,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2024-11-13 15:58:34,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:41,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:58:46,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:58:48,186 INFO L124 PetriNetUnfolderBase]: 1396/2941 cut-off events. [2024-11-13 15:58:48,187 INFO L125 PetriNetUnfolderBase]: For 878/878 co-relation queries the response was YES. [2024-11-13 15:58:48,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6901 conditions, 2941 events. 1396/2941 cut-off events. For 878/878 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 18266 event pairs, 183 based on Foata normal form. 36/2829 useless extension candidates. Maximal degree in co-relation 5884. Up to 1138 conditions per place. [2024-11-13 15:58:48,210 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 151 selfloop transitions, 18 changer transitions 3/189 dead transitions. [2024-11-13 15:58:48,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 189 transitions, 954 flow [2024-11-13 15:58:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:58:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:58:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 410 transitions. [2024-11-13 15:58:48,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170239596469105 [2024-11-13 15:58:48,216 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 273 flow. Second operand 13 states and 410 transitions. [2024-11-13 15:58:48,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 189 transitions, 954 flow [2024-11-13 15:58:48,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 189 transitions, 927 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-13 15:58:48,225 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 405 flow [2024-11-13 15:58:48,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=405, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-11-13 15:58:48,226 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2024-11-13 15:58:48,228 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 405 flow [2024-11-13 15:58:48,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.42105263157895) internal successors, (407), 19 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:48,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:48,228 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:48,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:58:48,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:48,430 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:48,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2106726498, now seen corresponding path program 1 times [2024-11-13 15:58:48,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:48,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817094472] [2024-11-13 15:58:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:48,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817094472] [2024-11-13 15:58:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817094472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321860580] [2024-11-13 15:58:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:49,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:49,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:49,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:58:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:49,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 15:58:49,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:49,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-13 15:58:49,703 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 15:58:49,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-13 15:58:49,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 15:58:49,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-13 15:58:50,129 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 15:58:50,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 44 [2024-11-13 15:58:50,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2024-11-13 15:58:50,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 15:58:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:50,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:50,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321860580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:50,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:50,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 20 [2024-11-13 15:58:50,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927734287] [2024-11-13 15:58:50,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:50,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:58:50,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:50,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:58:50,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:58:50,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2024-11-13 15:58:50,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 405 flow. Second operand has 22 states, 22 states have (on average 24.136363636363637) internal successors, (531), 22 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:50,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:50,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2024-11-13 15:58:50,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:53,805 INFO L124 PetriNetUnfolderBase]: 1473/3268 cut-off events. [2024-11-13 15:58:53,805 INFO L125 PetriNetUnfolderBase]: For 1926/1926 co-relation queries the response was YES. [2024-11-13 15:58:53,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7955 conditions, 3268 events. 1473/3268 cut-off events. For 1926/1926 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21692 event pairs, 203 based on Foata normal form. 36/3135 useless extension candidates. Maximal degree in co-relation 6805. Up to 633 conditions per place. [2024-11-13 15:58:53,830 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 173 selfloop transitions, 35 changer transitions 3/231 dead transitions. [2024-11-13 15:58:53,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 231 transitions, 1218 flow [2024-11-13 15:58:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:58:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-13 15:58:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 592 transitions. [2024-11-13 15:58:53,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5391621129326047 [2024-11-13 15:58:53,833 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 405 flow. Second operand 18 states and 592 transitions. [2024-11-13 15:58:53,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 231 transitions, 1218 flow [2024-11-13 15:58:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 231 transitions, 1198 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-13 15:58:53,849 INFO L231 Difference]: Finished difference. Result has 113 places, 94 transitions, 557 flow [2024-11-13 15:58:53,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=557, PETRI_PLACES=113, PETRI_TRANSITIONS=94} [2024-11-13 15:58:53,851 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 56 predicate places. [2024-11-13 15:58:53,851 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 94 transitions, 557 flow [2024-11-13 15:58:53,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.136363636363637) internal successors, (531), 22 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:53,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:53,852 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:53,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:58:54,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:58:54,056 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:54,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:54,056 INFO L85 PathProgramCache]: Analyzing trace with hash -884010288, now seen corresponding path program 1 times [2024-11-13 15:58:54,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:54,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703447873] [2024-11-13 15:58:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:54,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:54,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703447873] [2024-11-13 15:58:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703447873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:54,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298873951] [2024-11-13 15:58:54,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:54,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:54,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:54,197 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:54,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:58:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:54,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:58:54,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:54,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:58:54,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298873951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:54,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:58:54,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 15:58:54,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373108059] [2024-11-13 15:58:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:54,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:58:54,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:58:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:58:54,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:58:54,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 94 transitions, 557 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:54,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:54,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:58:54,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:55,257 INFO L124 PetriNetUnfolderBase]: 1398/3129 cut-off events. [2024-11-13 15:58:55,257 INFO L125 PetriNetUnfolderBase]: For 2897/2897 co-relation queries the response was YES. [2024-11-13 15:58:55,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8127 conditions, 3129 events. 1398/3129 cut-off events. For 2897/2897 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 20705 event pairs, 223 based on Foata normal form. 60/2960 useless extension candidates. Maximal degree in co-relation 6957. Up to 1853 conditions per place. [2024-11-13 15:58:55,288 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 88 selfloop transitions, 9 changer transitions 3/124 dead transitions. [2024-11-13 15:58:55,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 824 flow [2024-11-13 15:58:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:58:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:58:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-11-13 15:58:55,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-11-13 15:58:55,290 INFO L175 Difference]: Start difference. First operand has 113 places, 94 transitions, 557 flow. Second operand 6 states and 210 transitions. [2024-11-13 15:58:55,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 824 flow [2024-11-13 15:58:55,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 124 transitions, 766 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-13 15:58:55,303 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 513 flow [2024-11-13 15:58:55,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=513, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2024-11-13 15:58:55,304 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2024-11-13 15:58:55,305 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 513 flow [2024-11-13 15:58:55,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:55,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:55,306 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:55,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:58:55,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:55,506 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:58:55,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash -884011282, now seen corresponding path program 1 times [2024-11-13 15:58:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481551994] [2024-11-13 15:58:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481551994] [2024-11-13 15:58:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481551994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:56,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543559026] [2024-11-13 15:58:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:56,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:56,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:56,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:56,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:58:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:56,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 15:58:56,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:56,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-13 15:58:56,600 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 15:58:56,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-13 15:58:56,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 15:58:56,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-13 15:58:56,917 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 15:58:56,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-13 15:58:56,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 15:58:57,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:58:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:57,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543559026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:57,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:57,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 18 [2024-11-13 15:58:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883025549] [2024-11-13 15:58:57,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:57,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:58:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:58:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:58:57,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:58:57,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 513 flow. Second operand has 20 states, 20 states have (on average 25.2) internal successors, (504), 20 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:57,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:57,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:58:57,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:00,290 INFO L124 PetriNetUnfolderBase]: 1777/4000 cut-off events. [2024-11-13 15:59:00,291 INFO L125 PetriNetUnfolderBase]: For 3365/3365 co-relation queries the response was YES. [2024-11-13 15:59:00,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 4000 events. 1777/4000 cut-off events. For 3365/3365 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 27082 event pairs, 243 based on Foata normal form. 60/3849 useless extension candidates. Maximal degree in co-relation 8709. Up to 633 conditions per place. [2024-11-13 15:59:00,321 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 200 selfloop transitions, 42 changer transitions 3/266 dead transitions. [2024-11-13 15:59:00,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 266 transitions, 1489 flow [2024-11-13 15:59:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:59:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-13 15:59:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 686 transitions. [2024-11-13 15:59:00,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5622950819672131 [2024-11-13 15:59:00,324 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 513 flow. Second operand 20 states and 686 transitions. [2024-11-13 15:59:00,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 266 transitions, 1489 flow [2024-11-13 15:59:00,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 266 transitions, 1484 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:59:00,340 INFO L231 Difference]: Finished difference. Result has 128 places, 105 transitions, 699 flow [2024-11-13 15:59:00,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=699, PETRI_PLACES=128, PETRI_TRANSITIONS=105} [2024-11-13 15:59:00,341 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 71 predicate places. [2024-11-13 15:59:00,341 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 105 transitions, 699 flow [2024-11-13 15:59:00,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 25.2) internal successors, (504), 20 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:00,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:00,342 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:00,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:59:00,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:59:00,543 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:59:00,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1634514432, now seen corresponding path program 1 times [2024-11-13 15:59:00,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:00,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234147048] [2024-11-13 15:59:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:59:00,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:00,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234147048] [2024-11-13 15:59:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234147048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:00,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:00,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:59:00,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437981460] [2024-11-13 15:59:00,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:00,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:59:00,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:00,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:59:00,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:59:00,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:59:00,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 105 transitions, 699 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:00,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:00,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:59:00,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:01,504 INFO L124 PetriNetUnfolderBase]: 1717/3856 cut-off events. [2024-11-13 15:59:01,504 INFO L125 PetriNetUnfolderBase]: For 4662/4662 co-relation queries the response was YES. [2024-11-13 15:59:01,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10411 conditions, 3856 events. 1717/3856 cut-off events. For 4662/4662 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 25821 event pairs, 892 based on Foata normal form. 84/3727 useless extension candidates. Maximal degree in co-relation 9987. Up to 1782 conditions per place. [2024-11-13 15:59:01,548 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 76 selfloop transitions, 18 changer transitions 0/118 dead transitions. [2024-11-13 15:59:01,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 915 flow [2024-11-13 15:59:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:59:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:59:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-13 15:59:01,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5778688524590164 [2024-11-13 15:59:01,551 INFO L175 Difference]: Start difference. First operand has 128 places, 105 transitions, 699 flow. Second operand 4 states and 141 transitions. [2024-11-13 15:59:01,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 915 flow [2024-11-13 15:59:01,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 118 transitions, 863 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-13 15:59:01,577 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 679 flow [2024-11-13 15:59:01,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2024-11-13 15:59:01,578 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2024-11-13 15:59:01,578 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 679 flow [2024-11-13 15:59:01,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:01,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:01,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:01,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:59:01,578 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:59:01,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash 321847684, now seen corresponding path program 1 times [2024-11-13 15:59:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:01,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803738868] [2024-11-13 15:59:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:01,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803738868] [2024-11-13 15:59:01,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803738868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826524797] [2024-11-13 15:59:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:01,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:01,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:01,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:59:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:01,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:59:01,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:01,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:02,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826524797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:02,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:02,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 15:59:02,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841083490] [2024-11-13 15:59:02,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:02,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:59:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:59:02,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:59:02,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:59:02,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 679 flow. Second operand has 10 states, 10 states have (on average 26.6) internal successors, (266), 10 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:02,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:02,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:59:02,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:03,238 INFO L124 PetriNetUnfolderBase]: 1432/3229 cut-off events. [2024-11-13 15:59:03,238 INFO L125 PetriNetUnfolderBase]: For 4141/4141 co-relation queries the response was YES. [2024-11-13 15:59:03,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9059 conditions, 3229 events. 1432/3229 cut-off events. For 4141/4141 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 20807 event pairs, 604 based on Foata normal form. 36/3109 useless extension candidates. Maximal degree in co-relation 8635. Up to 1209 conditions per place. [2024-11-13 15:59:03,260 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 102 selfloop transitions, 12 changer transitions 0/138 dead transitions. [2024-11-13 15:59:03,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 138 transitions, 973 flow [2024-11-13 15:59:03,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:59:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:59:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2024-11-13 15:59:03,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-11-13 15:59:03,263 INFO L175 Difference]: Start difference. First operand has 123 places, 104 transitions, 679 flow. Second operand 7 states and 245 transitions. [2024-11-13 15:59:03,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 138 transitions, 973 flow [2024-11-13 15:59:03,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 138 transitions, 939 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-13 15:59:03,288 INFO L231 Difference]: Finished difference. Result has 129 places, 103 transitions, 671 flow [2024-11-13 15:59:03,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=671, PETRI_PLACES=129, PETRI_TRANSITIONS=103} [2024-11-13 15:59:03,289 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2024-11-13 15:59:03,289 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 103 transitions, 671 flow [2024-11-13 15:59:03,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.6) internal successors, (266), 10 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:03,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:03,290 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:03,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:59:03,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:59:03,491 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:59:03,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1233723685, now seen corresponding path program 1 times [2024-11-13 15:59:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753315501] [2024-11-13 15:59:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:59:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753315501] [2024-11-13 15:59:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753315501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764923418] [2024-11-13 15:59:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:04,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:04,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:04,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:59:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:04,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:59:04,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:04,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:59:04,525 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:59:04,543 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-13 15:59:04,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-13 15:59:04,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:59:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:59:04,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:04,762 INFO L349 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2024-11-13 15:59:04,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 67 [2024-11-13 15:59:04,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:59:04,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2024-11-13 15:59:04,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-13 15:59:04,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:59:04,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-11-13 15:59:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:59:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764923418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:04,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:04,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-13 15:59:04,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252052962] [2024-11-13 15:59:04,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:04,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:59:04,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:04,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:59:04,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:59:04,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-13 15:59:04,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 103 transitions, 671 flow. Second operand has 14 states, 14 states have (on average 28.357142857142858) internal successors, (397), 14 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:04,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:04,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-13 15:59:04,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:06,409 INFO L124 PetriNetUnfolderBase]: 1423/3256 cut-off events. [2024-11-13 15:59:06,409 INFO L125 PetriNetUnfolderBase]: For 3829/3829 co-relation queries the response was YES. [2024-11-13 15:59:06,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9270 conditions, 3256 events. 1423/3256 cut-off events. For 3829/3829 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20812 event pairs, 218 based on Foata normal form. 36/3144 useless extension candidates. Maximal degree in co-relation 7856. Up to 895 conditions per place. [2024-11-13 15:59:06,430 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 104 selfloop transitions, 34 changer transitions 3/164 dead transitions. [2024-11-13 15:59:06,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 164 transitions, 1086 flow [2024-11-13 15:59:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:59:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:59:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 356 transitions. [2024-11-13 15:59:06,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5836065573770491 [2024-11-13 15:59:06,432 INFO L175 Difference]: Start difference. First operand has 129 places, 103 transitions, 671 flow. Second operand 10 states and 356 transitions. [2024-11-13 15:59:06,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 164 transitions, 1086 flow [2024-11-13 15:59:06,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 164 transitions, 1028 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-13 15:59:06,449 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 692 flow [2024-11-13 15:59:06,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=692, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2024-11-13 15:59:06,450 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 73 predicate places. [2024-11-13 15:59:06,450 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 692 flow [2024-11-13 15:59:06,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.357142857142858) internal successors, (397), 14 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:06,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:06,450 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:06,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:59:06,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:59:06,655 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:59:06,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2065368771, now seen corresponding path program 2 times [2024-11-13 15:59:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717246285] [2024-11-13 15:59:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:59:07,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:07,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717246285] [2024-11-13 15:59:07,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717246285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:07,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442083989] [2024-11-13 15:59:07,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:07,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:07,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:07,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:07,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:59:08,073 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:08,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:08,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 15:59:08,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:08,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-11-13 15:59:08,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 15:59:08,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 15:59:08,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 15:59:08,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 15:59:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:59:08,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:59:08,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442083989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:08,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:08,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 20 [2024-11-13 15:59:08,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380450847] [2024-11-13 15:59:08,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:08,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:59:08,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:59:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:59:08,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 15:59:08,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 692 flow. Second operand has 21 states, 21 states have (on average 25.285714285714285) internal successors, (531), 21 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:08,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:08,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 15:59:08,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:10,536 INFO L124 PetriNetUnfolderBase]: 1044/2317 cut-off events. [2024-11-13 15:59:10,537 INFO L125 PetriNetUnfolderBase]: For 2493/2493 co-relation queries the response was YES. [2024-11-13 15:59:10,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 2317 events. 1044/2317 cut-off events. For 2493/2493 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 13243 event pairs, 178 based on Foata normal form. 24/2235 useless extension candidates. Maximal degree in co-relation 5616. Up to 1230 conditions per place. [2024-11-13 15:59:10,550 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 131 selfloop transitions, 18 changer transitions 3/171 dead transitions. [2024-11-13 15:59:10,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 171 transitions, 993 flow [2024-11-13 15:59:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:59:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:59:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 463 transitions. [2024-11-13 15:59:10,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5421545667447307 [2024-11-13 15:59:10,553 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 692 flow. Second operand 14 states and 463 transitions. [2024-11-13 15:59:10,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 171 transitions, 993 flow [2024-11-13 15:59:10,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 171 transitions, 938 flow, removed 8 selfloop flow, removed 18 redundant places. [2024-11-13 15:59:10,566 INFO L231 Difference]: Finished difference. Result has 122 places, 84 transitions, 471 flow [2024-11-13 15:59:10,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=471, PETRI_PLACES=122, PETRI_TRANSITIONS=84} [2024-11-13 15:59:10,567 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 65 predicate places. [2024-11-13 15:59:10,567 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 84 transitions, 471 flow [2024-11-13 15:59:10,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.285714285714285) internal successors, (531), 21 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:10,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:10,568 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:10,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:59:10,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:59:10,772 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 15:59:10,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash 839141019, now seen corresponding path program 2 times [2024-11-13 15:59:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:10,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85071809] [2024-11-13 15:59:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:10,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85071809] [2024-11-13 15:59:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85071809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949943464] [2024-11-13 15:59:13,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:13,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:13,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:13,514 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:13,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:59:13,870 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:13,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:13,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-13 15:59:13,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:13,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-13 15:59:14,045 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2024-11-13 15:59:14,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 49 [2024-11-13 15:59:14,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-13 15:59:14,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-13 15:59:14,407 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2024-11-13 15:59:14,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 49 [2024-11-13 15:59:14,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-13 15:59:14,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2024-11-13 15:59:14,784 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2024-11-13 15:59:14,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 49 [2024-11-13 15:59:14,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-13 15:59:15,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-13 15:59:15,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2024-11-13 15:59:15,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-13 15:59:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:15,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949943464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:41,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:41,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 41 [2024-11-13 15:59:41,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25172253] [2024-11-13 15:59:41,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:41,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 15:59:41,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 15:59:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1437, Unknown=4, NotChecked=0, Total=1806 [2024-11-13 15:59:45,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:59:49,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:59:49,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2024-11-13 15:59:49,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 84 transitions, 471 flow. Second operand has 43 states, 43 states have (on average 21.186046511627907) internal successors, (911), 43 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:49,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:49,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2024-11-13 15:59:49,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:00:04,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:09,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:10,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:13,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:14,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:19,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:23,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:25,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:45,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:47,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:51,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:52,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:00:57,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:01,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:03,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:08,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:16,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:20,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:25,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:41,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:45,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:50,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:54,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:01:58,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:02,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:06,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:19,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:23,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:27,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:31,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:35,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:39,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:45,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:02:49,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:10,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:14,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:18,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:22,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:26,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:30,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:34,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:38,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:43,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:47,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:52,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:03:56,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:00,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:04,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:08,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:09,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:14,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:18,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:18,662 INFO L124 PetriNetUnfolderBase]: 2108/4249 cut-off events. [2024-11-13 16:04:18,662 INFO L125 PetriNetUnfolderBase]: For 2823/2823 co-relation queries the response was YES. [2024-11-13 16:04:18,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11855 conditions, 4249 events. 2108/4249 cut-off events. For 2823/2823 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 24797 event pairs, 223 based on Foata normal form. 60/4119 useless extension candidates. Maximal degree in co-relation 10073. Up to 1137 conditions per place. [2024-11-13 16:04:18,688 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 317 selfloop transitions, 41 changer transitions 3/376 dead transitions. [2024-11-13 16:04:18,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 376 transitions, 2121 flow [2024-11-13 16:04:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 16:04:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-13 16:04:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 963 transitions. [2024-11-13 16:04:18,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49334016393442626 [2024-11-13 16:04:18,694 INFO L175 Difference]: Start difference. First operand has 122 places, 84 transitions, 471 flow. Second operand 32 states and 963 transitions. [2024-11-13 16:04:18,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 376 transitions, 2121 flow [2024-11-13 16:04:18,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 376 transitions, 2077 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-13 16:04:18,709 INFO L231 Difference]: Finished difference. Result has 147 places, 104 transitions, 762 flow [2024-11-13 16:04:18,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=762, PETRI_PLACES=147, PETRI_TRANSITIONS=104} [2024-11-13 16:04:18,710 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 90 predicate places. [2024-11-13 16:04:18,710 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 104 transitions, 762 flow [2024-11-13 16:04:18,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 21.186046511627907) internal successors, (911), 43 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:18,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:04:18,711 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:18,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:04:18,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 16:04:18,911 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 16:04:18,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1039309666, now seen corresponding path program 2 times [2024-11-13 16:04:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734293466] [2024-11-13 16:04:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:21,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:21,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734293466] [2024-11-13 16:04:21,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734293466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:21,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207691711] [2024-11-13 16:04:21,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:04:21,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:21,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:21,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:21,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:04:21,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:04:21,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:04:21,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 16:04:21,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:21,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:04:21,949 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-13 16:04:21,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 56 [2024-11-13 16:04:22,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 16:04:22,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 16:04:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 16:04:22,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:22,366 INFO L349 Elim1Store]: treesize reduction 19, result has 63.5 percent of original size [2024-11-13 16:04:22,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 87 [2024-11-13 16:04:22,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:04:22,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 87 [2024-11-13 16:04:22,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2024-11-13 16:04:22,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:04:22,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 90 [2024-11-13 16:04:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 16:04:22,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207691711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:22,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:22,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 23 [2024-11-13 16:04:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152213790] [2024-11-13 16:04:22,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:22,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 16:04:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 16:04:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:04:22,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2024-11-13 16:04:22,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 104 transitions, 762 flow. Second operand has 24 states, 24 states have (on average 25.125) internal successors, (603), 24 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:22,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:04:22,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2024-11-13 16:04:22,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:04:25,484 INFO L124 PetriNetUnfolderBase]: 2205/4690 cut-off events. [2024-11-13 16:04:25,485 INFO L125 PetriNetUnfolderBase]: For 5808/5808 co-relation queries the response was YES. [2024-11-13 16:04:25,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13653 conditions, 4690 events. 2205/4690 cut-off events. For 5808/5808 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 28486 event pairs, 263 based on Foata normal form. 84/4542 useless extension candidates. Maximal degree in co-relation 11727. Up to 844 conditions per place. [2024-11-13 16:04:25,505 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 182 selfloop transitions, 54 changer transitions 3/256 dead transitions. [2024-11-13 16:04:25,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 256 transitions, 1722 flow [2024-11-13 16:04:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 16:04:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-13 16:04:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 599 transitions. [2024-11-13 16:04:25,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5455373406193078 [2024-11-13 16:04:25,507 INFO L175 Difference]: Start difference. First operand has 147 places, 104 transitions, 762 flow. Second operand 18 states and 599 transitions. [2024-11-13 16:04:25,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 256 transitions, 1722 flow [2024-11-13 16:04:25,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 256 transitions, 1581 flow, removed 30 selfloop flow, removed 23 redundant places. [2024-11-13 16:04:25,539 INFO L231 Difference]: Finished difference. Result has 139 places, 112 transitions, 848 flow [2024-11-13 16:04:25,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=848, PETRI_PLACES=139, PETRI_TRANSITIONS=112} [2024-11-13 16:04:25,539 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 82 predicate places. [2024-11-13 16:04:25,540 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 112 transitions, 848 flow [2024-11-13 16:04:25,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 25.125) internal successors, (603), 24 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:25,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:04:25,540 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:25,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:04:25,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 16:04:25,741 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 16:04:25,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1794341598, now seen corresponding path program 2 times [2024-11-13 16:04:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:25,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378922747] [2024-11-13 16:04:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 16:04:25,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:25,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378922747] [2024-11-13 16:04:25,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378922747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:04:25,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:04:25,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:04:25,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727945992] [2024-11-13 16:04:25,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:04:25,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:04:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:04:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:04:25,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-13 16:04:25,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 112 transitions, 848 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:25,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:04:25,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-13 16:04:25,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:04:26,436 INFO L124 PetriNetUnfolderBase]: 1444/3577 cut-off events. [2024-11-13 16:04:26,436 INFO L125 PetriNetUnfolderBase]: For 5128/5128 co-relation queries the response was YES. [2024-11-13 16:04:26,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10457 conditions, 3577 events. 1444/3577 cut-off events. For 5128/5128 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 21512 event pairs, 285 based on Foata normal form. 148/3565 useless extension candidates. Maximal degree in co-relation 9023. Up to 2158 conditions per place. [2024-11-13 16:04:26,456 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 95 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-11-13 16:04:26,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 120 transitions, 1065 flow [2024-11-13 16:04:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:04:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:04:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-11-13 16:04:26,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.644808743169399 [2024-11-13 16:04:26,457 INFO L175 Difference]: Start difference. First operand has 139 places, 112 transitions, 848 flow. Second operand 3 states and 118 transitions. [2024-11-13 16:04:26,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 120 transitions, 1065 flow [2024-11-13 16:04:26,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 919 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-11-13 16:04:26,480 INFO L231 Difference]: Finished difference. Result has 129 places, 112 transitions, 710 flow [2024-11-13 16:04:26,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=710, PETRI_PLACES=129, PETRI_TRANSITIONS=112} [2024-11-13 16:04:26,481 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2024-11-13 16:04:26,481 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 112 transitions, 710 flow [2024-11-13 16:04:26,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:26,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:04:26,481 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:26,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 16:04:26,481 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 16:04:26,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash -895470000, now seen corresponding path program 1 times [2024-11-13 16:04:26,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:26,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726881219] [2024-11-13 16:04:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:26,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726881219] [2024-11-13 16:04:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726881219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936983064] [2024-11-13 16:04:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:26,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:26,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:26,718 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:26,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:04:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:27,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:04:27,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:27,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:27,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936983064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:27,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:27,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-13 16:04:27,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560689343] [2024-11-13 16:04:27,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:27,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:04:27,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:27,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:04:27,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:04:27,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 16:04:27,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 112 transitions, 710 flow. Second operand has 18 states, 18 states have (on average 26.27777777777778) internal successors, (473), 18 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:27,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:04:27,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 16:04:27,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:04:28,692 INFO L124 PetriNetUnfolderBase]: 1324/3257 cut-off events. [2024-11-13 16:04:28,692 INFO L125 PetriNetUnfolderBase]: For 4412/4412 co-relation queries the response was YES. [2024-11-13 16:04:28,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10162 conditions, 3257 events. 1324/3257 cut-off events. For 4412/4412 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 18515 event pairs, 384 based on Foata normal form. 100/3255 useless extension candidates. Maximal degree in co-relation 9044. Up to 810 conditions per place. [2024-11-13 16:04:28,708 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 153 selfloop transitions, 24 changer transitions 0/198 dead transitions. [2024-11-13 16:04:28,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 198 transitions, 1424 flow [2024-11-13 16:04:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:04:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 16:04:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 487 transitions. [2024-11-13 16:04:28,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5322404371584699 [2024-11-13 16:04:28,710 INFO L175 Difference]: Start difference. First operand has 129 places, 112 transitions, 710 flow. Second operand 15 states and 487 transitions. [2024-11-13 16:04:28,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 198 transitions, 1424 flow [2024-11-13 16:04:28,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 198 transitions, 1408 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-13 16:04:28,729 INFO L231 Difference]: Finished difference. Result has 147 places, 122 transitions, 884 flow [2024-11-13 16:04:28,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=884, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2024-11-13 16:04:28,729 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 90 predicate places. [2024-11-13 16:04:28,729 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 884 flow [2024-11-13 16:04:28,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 26.27777777777778) internal successors, (473), 18 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:28,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:04:28,730 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:28,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 16:04:28,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:28,930 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 16:04:28,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1307969094, now seen corresponding path program 2 times [2024-11-13 16:04:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:28,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419484018] [2024-11-13 16:04:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:32,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:32,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419484018] [2024-11-13 16:04:32,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419484018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:32,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036319132] [2024-11-13 16:04:32,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:04:32,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:32,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:32,334 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:32,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:04:32,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:04:32,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:04:32,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-13 16:04:32,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:32,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-13 16:04:33,090 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 16:04:33,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-13 16:04:33,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:04:33,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-13 16:04:33,459 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 16:04:33,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-13 16:04:33,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:04:33,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-13 16:04:33,806 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 16:04:33,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-13 16:04:33,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:04:34,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-13 16:04:34,190 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 16:04:34,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-13 16:04:34,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:04:34,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-13 16:04:34,565 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 16:04:34,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-13 16:04:34,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:04:34,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:04:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:34,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:37,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036319132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:37,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:37,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 52 [2024-11-13 16:04:37,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080076592] [2024-11-13 16:04:37,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:37,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 16:04:37,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 16:04:37,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=742, Invalid=2120, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 16:04:37,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 16:04:37,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 884 flow. Second operand has 54 states, 54 states have (on average 24.814814814814813) internal successors, (1340), 54 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:37,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:04:37,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 16:04:37,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:04:44,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:50,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:04:52,378 INFO L124 PetriNetUnfolderBase]: 2422/5929 cut-off events. [2024-11-13 16:04:52,379 INFO L125 PetriNetUnfolderBase]: For 10524/10524 co-relation queries the response was YES. [2024-11-13 16:04:52,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19025 conditions, 5929 events. 2422/5929 cut-off events. For 10524/10524 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 38344 event pairs, 287 based on Foata normal form. 130/5817 useless extension candidates. Maximal degree in co-relation 15457. Up to 1160 conditions per place. [2024-11-13 16:04:52,406 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 369 selfloop transitions, 96 changer transitions 13/497 dead transitions. [2024-11-13 16:04:52,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 497 transitions, 3392 flow [2024-11-13 16:04:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 16:04:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-13 16:04:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1416 transitions. [2024-11-13 16:04:52,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5398398780022875 [2024-11-13 16:04:52,410 INFO L175 Difference]: Start difference. First operand has 147 places, 122 transitions, 884 flow. Second operand 43 states and 1416 transitions. [2024-11-13 16:04:52,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 497 transitions, 3392 flow [2024-11-13 16:04:52,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 497 transitions, 3358 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-13 16:04:52,463 INFO L231 Difference]: Finished difference. Result has 200 places, 172 transitions, 1694 flow [2024-11-13 16:04:52,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1694, PETRI_PLACES=200, PETRI_TRANSITIONS=172} [2024-11-13 16:04:52,464 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 143 predicate places. [2024-11-13 16:04:52,464 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 172 transitions, 1694 flow [2024-11-13 16:04:52,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 24.814814814814813) internal successors, (1340), 54 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:04:52,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:04:52,465 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:52,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:04:52,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 16:04:52,665 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 16:04:52,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash -211375943, now seen corresponding path program 3 times [2024-11-13 16:04:52,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:52,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685648995] [2024-11-13 16:04:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:52,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:55,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685648995] [2024-11-13 16:04:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685648995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:55,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687946036] [2024-11-13 16:04:55,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:04:55,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:55,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:55,238 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:55,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:05:44,529 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 16:05:44,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:05:44,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-13 16:05:44,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:05:44,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-11-13 16:05:44,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:44,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:44,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 16:05:44,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:45,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:45,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 16:05:45,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:45,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:45,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 16:05:45,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:45,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:45,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 16:05:46,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:46,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:05:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:46,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:05:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:49,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687946036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:05:49,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:05:49,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 50 [2024-11-13 16:05:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213409060] [2024-11-13 16:05:49,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:05:49,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 16:05:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:05:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 16:05:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1985, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 16:05:49,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-13 16:05:49,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 172 transitions, 1694 flow. Second operand has 51 states, 51 states have (on average 24.941176470588236) internal successors, (1272), 51 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:05:49,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:05:49,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-13 16:05:49,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:06:00,069 INFO L124 PetriNetUnfolderBase]: 1460/3615 cut-off events. [2024-11-13 16:06:00,069 INFO L125 PetriNetUnfolderBase]: For 8391/8391 co-relation queries the response was YES. [2024-11-13 16:06:00,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12191 conditions, 3615 events. 1460/3615 cut-off events. For 8391/8391 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 18492 event pairs, 176 based on Foata normal form. 50/3524 useless extension candidates. Maximal degree in co-relation 10590. Up to 1326 conditions per place. [2024-11-13 16:06:00,090 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 277 selfloop transitions, 50 changer transitions 6/352 dead transitions. [2024-11-13 16:06:00,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 352 transitions, 2355 flow [2024-11-13 16:06:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 16:06:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-13 16:06:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1259 transitions. [2024-11-13 16:06:00,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5033986405437825 [2024-11-13 16:06:00,094 INFO L175 Difference]: Start difference. First operand has 200 places, 172 transitions, 1694 flow. Second operand 41 states and 1259 transitions. [2024-11-13 16:06:00,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 352 transitions, 2355 flow [2024-11-13 16:06:00,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 352 transitions, 2156 flow, removed 50 selfloop flow, removed 38 redundant places. [2024-11-13 16:06:00,132 INFO L231 Difference]: Finished difference. Result has 203 places, 127 transitions, 997 flow [2024-11-13 16:06:00,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=997, PETRI_PLACES=203, PETRI_TRANSITIONS=127} [2024-11-13 16:06:00,132 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 146 predicate places. [2024-11-13 16:06:00,132 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 127 transitions, 997 flow [2024-11-13 16:06:00,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 24.941176470588236) internal successors, (1272), 51 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:06:00,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:06:00,133 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:06:00,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 16:06:00,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 16:06:00,334 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-13 16:06:00,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:06:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1299578725, now seen corresponding path program 3 times [2024-11-13 16:06:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:06:00,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082948905] [2024-11-13 16:06:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:06:00,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:06:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:06:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:09,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:06:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082948905] [2024-11-13 16:06:09,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082948905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:06:09,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667199410] [2024-11-13 16:06:09,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:06:09,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:06:09,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:06:09,184 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:06:09,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95aa1a54-6a17-4452-a57e-8dce17cb494a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process