./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:12:04,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:12:04,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:12:04,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:12:04,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:12:04,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:12:04,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:12:04,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:12:04,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:12:04,797 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:12:04,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:12:04,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:12:04,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:12:04,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:12:04,798 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:12:04,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:12:04,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:12:04,801 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:12:04,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:12:04,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:12:04,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:12:04,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:12:04,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:12:04,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:12:04,802 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:12:04,802 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:12:04,802 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:12:04,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:12:04,802 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:12:04,802 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:12:04,802 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:12:04,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:12:04,803 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:12:04,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:12:04,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:12:04,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:12:04,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:12:04,803 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:12:04,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:12:04,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:12:04,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:12:04,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:12:04,804 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_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2024-11-28 03:12:05,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:12:05,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:12:05,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:12:05,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:12:05,217 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:12:05,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-28 03:12:08,393 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/data/b1da6d9ab/4d79fe55234a45be80d421d50e3c2fbe/FLAG3d45d031c [2024-11-28 03:12:08,774 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:12:08,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-28 03:12:08,788 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/data/b1da6d9ab/4d79fe55234a45be80d421d50e3c2fbe/FLAG3d45d031c [2024-11-28 03:12:08,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/data/b1da6d9ab/4d79fe55234a45be80d421d50e3c2fbe [2024-11-28 03:12:08,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:12:08,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:12:08,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:12:08,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:12:08,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:12:08,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:08" (1/1) ... [2024-11-28 03:12:08,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e38701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:08, skipping insertion in model container [2024-11-28 03:12:08,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:08" (1/1) ... [2024-11-28 03:12:08,882 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:12:09,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:12:09,234 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:12:09,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:12:09,332 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:12:09,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09 WrapperNode [2024-11-28 03:12:09,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:12:09,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:12:09,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:12:09,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:12:09,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,378 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2024-11-28 03:12:09,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:12:09,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:12:09,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:12:09,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:12:09,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,413 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-11-28 03:12:09,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,424 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:12:09,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:12:09,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:12:09,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:12:09,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (1/1) ... [2024-11-28 03:12:09,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:12:09,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:09,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:12:09,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99aef15c-d2fc-42f5-b85b-d4c0d591c29c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:12:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:12:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:12:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:12:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 03:12:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 03:12:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:12:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:12:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:12:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:12:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:12:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:12:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:12:09,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:12:09,544 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:12:09,695 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:12:09,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:12:09,929 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:12:09,929 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:12:10,132 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:12:10,132 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 03:12:10,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:10 BoogieIcfgContainer [2024-11-28 03:12:10,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:12:10,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:12:10,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:12:10,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:12:10,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:08" (1/3) ... [2024-11-28 03:12:10,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53265f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:10, skipping insertion in model container [2024-11-28 03:12:10,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:09" (2/3) ... [2024-11-28 03:12:10,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53265f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:10, skipping insertion in model container [2024-11-28 03:12:10,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:10" (3/3) ... [2024-11-28 03:12:10,147 INFO L128 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2024-11-28 03:12:10,164 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:12:10,165 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 11_fmaxsymopt-zero.i that has 2 procedures, 24 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2024-11-28 03:12:10,166 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:12:10,275 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:12:10,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 28 transitions, 60 flow [2024-11-28 03:12:10,354 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-28 03:12:10,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:12:10,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 4/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-28 03:12:10,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 28 transitions, 60 flow [2024-11-28 03:12:10,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 28 transitions, 60 flow [2024-11-28 03:12:10,373 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:12:10,387 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;@50d6bcf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:12:10,388 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-28 03:12:10,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:12:10,396 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-28 03:12:10,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:12:10,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:10,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:12:10,397 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:12:10,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash 254263456, now seen corresponding path program 1 times [2024-11-28 03:12:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814869859] [2024-11-28 03:12:10,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:10,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814869859] [2024-11-28 03:12:10,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814869859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:10,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:10,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:10,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006452908] [2024-11-28 03:12:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:10,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:10,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:10,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:10,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:10,911 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-11-28 03:12:10,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:10,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:10,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-11-28 03:12:10,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:11,026 INFO L124 PetriNetUnfolderBase]: 22/80 cut-off events. [2024-11-28 03:12:11,028 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:12:11,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 80 events. 22/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 2 based on Foata normal form. 6/80 useless extension candidates. Maximal degree in co-relation 120. Up to 38 conditions per place. [2024-11-28 03:12:11,032 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 13 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-11-28 03:12:11,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 86 flow [2024-11-28 03:12:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-28 03:12:11,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-28 03:12:11,057 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 60 flow. Second operand 3 states and 53 transitions. [2024-11-28 03:12:11,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 86 flow [2024-11-28 03:12:11,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:12:11,064 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 56 flow [2024-11-28 03:12:11,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2024-11-28 03:12:11,071 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-28 03:12:11,072 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 56 flow [2024-11-28 03:12:11,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:11,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:11,072 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 03:12:11,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:12:11,073 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 03:12:11,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:11,073 INFO L85 PathProgramCache]: Analyzing trace with hash -707769049, now seen corresponding path program 1 times [2024-11-28 03:12:11,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:11,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134740121] [2024-11-28 03:12:11,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:12:11,094 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:12:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:12:11,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:12:11,122 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:12:11,124 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-28 03:12:11,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-11-28 03:12:11,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-11-28 03:12:11,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-11-28 03:12:11,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2024-11-28 03:12:11,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-11-28 03:12:11,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-11-28 03:12:11,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-11-28 03:12:11,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-11-28 03:12:11,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:12:11,128 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 03:12:11,131 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:12:11,131 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:12:11,175 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:12:11,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 51 transitions, 112 flow [2024-11-28 03:12:11,206 INFO L124 PetriNetUnfolderBase]: 8/56 cut-off events. [2024-11-28 03:12:11,207 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:12:11,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 56 events. 8/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 163 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-28 03:12:11,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 51 transitions, 112 flow [2024-11-28 03:12:11,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 51 transitions, 112 flow [2024-11-28 03:12:11,212 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:12:11,213 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;@50d6bcf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:12:11,213 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-28 03:12:11,218 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:12:11,218 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 03:12:11,218 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:12:11,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:11,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:12:11,218 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 03:12:11,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash 302954857, now seen corresponding path program 1 times [2024-11-28 03:12:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:11,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259949753] [2024-11-28 03:12:11,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:11,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259949753] [2024-11-28 03:12:11,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259949753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:11,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:11,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:11,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459093491] [2024-11-28 03:12:11,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:11,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:11,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:11,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:11,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:11,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-28 03:12:11,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:11,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:11,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-28 03:12:11,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:11,784 INFO L124 PetriNetUnfolderBase]: 421/977 cut-off events. [2024-11-28 03:12:11,784 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-28 03:12:11,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 977 events. 421/977 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5999 event pairs, 54 based on Foata normal form. 108/1004 useless extension candidates. Maximal degree in co-relation 1348. Up to 517 conditions per place. [2024-11-28 03:12:11,802 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 31 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-11-28 03:12:11,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 193 flow [2024-11-28 03:12:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-28 03:12:11,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-11-28 03:12:11,808 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 112 flow. Second operand 3 states and 111 transitions. [2024-11-28 03:12:11,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 193 flow [2024-11-28 03:12:11,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:12:11,813 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 104 flow [2024-11-28 03:12:11,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-28 03:12:11,815 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-11-28 03:12:11,815 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 104 flow [2024-11-28 03:12:11,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:11,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:11,815 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:12:11,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:12:11,816 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 03:12:11,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:11,817 INFO L85 PathProgramCache]: Analyzing trace with hash 801666329, now seen corresponding path program 1 times [2024-11-28 03:12:11,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:11,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379351545] [2024-11-28 03:12:11,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:11,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:11,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379351545] [2024-11-28 03:12:11,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379351545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:11,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:11,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:11,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844377692] [2024-11-28 03:12:11,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:11,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:11,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:11,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:11,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:11,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-28 03:12:11,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:11,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:11,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-28 03:12:11,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:12,225 INFO L124 PetriNetUnfolderBase]: 372/856 cut-off events. [2024-11-28 03:12:12,225 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-28 03:12:12,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 856 events. 372/856 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4950 event pairs, 126 based on Foata normal form. 27/799 useless extension candidates. Maximal degree in co-relation 1292. Up to 447 conditions per place. [2024-11-28 03:12:12,235 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 30 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-11-28 03:12:12,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 193 flow [2024-11-28 03:12:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-28 03:12:12,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 03:12:12,238 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 104 flow. Second operand 3 states and 102 transitions. [2024-11-28 03:12:12,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 193 flow [2024-11-28 03:12:12,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:12,241 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 102 flow [2024-11-28 03:12:12,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-11-28 03:12:12,244 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-11-28 03:12:12,245 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 102 flow [2024-11-28 03:12:12,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:12,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:12,245 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:12,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:12:12,245 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 03:12:12,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1579433803, now seen corresponding path program 1 times [2024-11-28 03:12:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:12,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865423632] [2024-11-28 03:12:12,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:12,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:12,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:12,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865423632] [2024-11-28 03:12:12,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865423632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:12,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:12,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373921497] [2024-11-28 03:12:12,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:12,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:12,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:12,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:12,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:12,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-28 03:12:12,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:12,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:12,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-28 03:12:12,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:12,698 INFO L124 PetriNetUnfolderBase]: 412/937 cut-off events. [2024-11-28 03:12:12,698 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-28 03:12:12,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 937 events. 412/937 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5632 event pairs, 72 based on Foata normal form. 24/889 useless extension candidates. Maximal degree in co-relation 1135. Up to 472 conditions per place. [2024-11-28 03:12:12,709 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 30 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-11-28 03:12:12,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 188 flow [2024-11-28 03:12:12,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-28 03:12:12,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 03:12:12,712 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 102 flow. Second operand 3 states and 102 transitions. [2024-11-28 03:12:12,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 188 flow [2024-11-28 03:12:12,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:12,715 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 100 flow [2024-11-28 03:12:12,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-11-28 03:12:12,716 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-11-28 03:12:12,716 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 100 flow [2024-11-28 03:12:12,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:12,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:12,717 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 03:12:12,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:12:12,717 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 03:12:12,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1717806117, now seen corresponding path program 1 times [2024-11-28 03:12:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:12,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825075869] [2024-11-28 03:12:12,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:12,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:12:12,747 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:12:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:12:12,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:12:12,777 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:12:12,780 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-28 03:12:12,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-28 03:12:12,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-28 03:12:12,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-28 03:12:12,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-28 03:12:12,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:12:12,782 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 03:12:12,783 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:12:12,783 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 03:12:12,858 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:12:12,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 74 transitions, 166 flow [2024-11-28 03:12:12,885 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2024-11-28 03:12:12,885 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 03:12:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 12/82 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 266 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2024-11-28 03:12:12,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 74 transitions, 166 flow [2024-11-28 03:12:12,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 74 transitions, 166 flow [2024-11-28 03:12:12,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:12:12,891 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;@50d6bcf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:12:12,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 03:12:12,896 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:12:12,896 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 03:12:12,896 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:12:12,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:12,896 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:12:12,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 03:12:12,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:12,897 INFO L85 PathProgramCache]: Analyzing trace with hash 373594569, now seen corresponding path program 1 times [2024-11-28 03:12:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:12,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532302795] [2024-11-28 03:12:12,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:12,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532302795] [2024-11-28 03:12:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532302795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:13,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:13,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856540192] [2024-11-28 03:12:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:13,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:13,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:13,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:13,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:13,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-28 03:12:13,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:13,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:13,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-28 03:12:13,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:14,437 INFO L124 PetriNetUnfolderBase]: 5317/9887 cut-off events. [2024-11-28 03:12:14,437 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2024-11-28 03:12:14,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17250 conditions, 9887 events. 5317/9887 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 81051 event pairs, 806 based on Foata normal form. 1648/10785 useless extension candidates. Maximal degree in co-relation 6526. Up to 5693 conditions per place. [2024-11-28 03:12:14,522 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 49 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-11-28 03:12:14,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 86 transitions, 304 flow [2024-11-28 03:12:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-28 03:12:14,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7612612612612613 [2024-11-28 03:12:14,524 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 166 flow. Second operand 3 states and 169 transitions. [2024-11-28 03:12:14,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 86 transitions, 304 flow [2024-11-28 03:12:14,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 300 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-28 03:12:14,531 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 152 flow [2024-11-28 03:12:14,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-28 03:12:14,532 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2024-11-28 03:12:14,532 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 152 flow [2024-11-28 03:12:14,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:14,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:14,532 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:12:14,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:12:14,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 03:12:14,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1303469821, now seen corresponding path program 1 times [2024-11-28 03:12:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:14,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547544701] [2024-11-28 03:12:14,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:14,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:14,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547544701] [2024-11-28 03:12:14,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547544701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:14,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:14,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:14,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6551359] [2024-11-28 03:12:14,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:14,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:14,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:14,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:14,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:14,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-28 03:12:14,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:14,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:14,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-28 03:12:14,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:15,748 INFO L124 PetriNetUnfolderBase]: 4754/9105 cut-off events. [2024-11-28 03:12:15,748 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-11-28 03:12:15,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 9105 events. 4754/9105 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 75366 event pairs, 806 based on Foata normal form. 219/8589 useless extension candidates. Maximal degree in co-relation 14380. Up to 4911 conditions per place. [2024-11-28 03:12:15,820 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 48 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-28 03:12:15,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 300 flow [2024-11-28 03:12:15,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-28 03:12:15,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-28 03:12:15,824 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 152 flow. Second operand 3 states and 156 transitions. [2024-11-28 03:12:15,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 300 flow [2024-11-28 03:12:15,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:15,832 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 150 flow [2024-11-28 03:12:15,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-28 03:12:15,833 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-11-28 03:12:15,836 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 150 flow [2024-11-28 03:12:15,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:15,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:15,837 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:15,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:12:15,837 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 03:12:15,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1473214987, now seen corresponding path program 1 times [2024-11-28 03:12:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:15,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988803700] [2024-11-28 03:12:15,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:15,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988803700] [2024-11-28 03:12:15,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988803700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:15,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:15,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:15,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142612554] [2024-11-28 03:12:15,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:15,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:15,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:15,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:15,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:15,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-28 03:12:15,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:15,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:15,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-28 03:12:15,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:17,232 INFO L124 PetriNetUnfolderBase]: 5318/9839 cut-off events. [2024-11-28 03:12:17,232 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-11-28 03:12:17,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17614 conditions, 9839 events. 5318/9839 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 79993 event pairs, 824 based on Foata normal form. 216/9352 useless extension candidates. Maximal degree in co-relation 12882. Up to 5648 conditions per place. [2024-11-28 03:12:17,307 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 48 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-28 03:12:17,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 295 flow [2024-11-28 03:12:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-28 03:12:17,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-28 03:12:17,311 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 150 flow. Second operand 3 states and 156 transitions. [2024-11-28 03:12:17,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 295 flow [2024-11-28 03:12:17,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:17,321 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 148 flow [2024-11-28 03:12:17,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-11-28 03:12:17,322 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2024-11-28 03:12:17,322 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 148 flow [2024-11-28 03:12:17,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:17,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:17,322 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:17,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:12:17,322 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 03:12:17,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1574975209, now seen corresponding path program 1 times [2024-11-28 03:12:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:17,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097695020] [2024-11-28 03:12:17,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:17,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:17,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097695020] [2024-11-28 03:12:17,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097695020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:17,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:17,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:17,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735246160] [2024-11-28 03:12:17,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:17,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:17,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:17,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:17,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:17,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-28 03:12:17,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:17,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:17,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-28 03:12:17,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:18,313 INFO L124 PetriNetUnfolderBase]: 4716/8661 cut-off events. [2024-11-28 03:12:18,314 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2024-11-28 03:12:18,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 8661 events. 4716/8661 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 67184 event pairs, 1400 based on Foata normal form. 216/8150 useless extension candidates. Maximal degree in co-relation 7276. Up to 4872 conditions per place. [2024-11-28 03:12:18,378 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 47 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-11-28 03:12:18,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 287 flow [2024-11-28 03:12:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-28 03:12:18,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-11-28 03:12:18,381 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 148 flow. Second operand 3 states and 155 transitions. [2024-11-28 03:12:18,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 287 flow [2024-11-28 03:12:18,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:18,385 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 146 flow [2024-11-28 03:12:18,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-11-28 03:12:18,386 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2024-11-28 03:12:18,386 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 146 flow [2024-11-28 03:12:18,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:18,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:18,386 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:18,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:12:18,390 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 03:12:18,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:18,391 INFO L85 PathProgramCache]: Analyzing trace with hash -869686192, now seen corresponding path program 1 times [2024-11-28 03:12:18,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:18,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736531224] [2024-11-28 03:12:18,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:18,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:18,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736531224] [2024-11-28 03:12:18,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736531224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:18,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:18,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:12:18,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123641193] [2024-11-28 03:12:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:18,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:12:18,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:18,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:12:18,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:12:18,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-28 03:12:18,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:18,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:18,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-28 03:12:18,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:19,475 INFO L124 PetriNetUnfolderBase]: 5212/9269 cut-off events. [2024-11-28 03:12:19,475 INFO L125 PetriNetUnfolderBase]: For 743/743 co-relation queries the response was YES. [2024-11-28 03:12:19,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17047 conditions, 9269 events. 5212/9269 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 71593 event pairs, 1880 based on Foata normal form. 219/8564 useless extension candidates. Maximal degree in co-relation 16694. Up to 4129 conditions per place. [2024-11-28 03:12:19,546 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 67 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-28 03:12:19,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 394 flow [2024-11-28 03:12:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:12:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:12:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-28 03:12:19,550 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-28 03:12:19,550 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 146 flow. Second operand 4 states and 212 transitions. [2024-11-28 03:12:19,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 394 flow [2024-11-28 03:12:19,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:19,565 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 148 flow [2024-11-28 03:12:19,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-11-28 03:12:19,566 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2024-11-28 03:12:19,567 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 148 flow [2024-11-28 03:12:19,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:19,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:19,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:19,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:12:19,568 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 03:12:19,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1190467733, now seen corresponding path program 1 times [2024-11-28 03:12:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:19,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205969578] [2024-11-28 03:12:19,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:19,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:19,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205969578] [2024-11-28 03:12:19,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205969578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:19,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:19,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:12:19,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977230628] [2024-11-28 03:12:19,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:19,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:12:19,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:19,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:12:19,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:12:19,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-28 03:12:19,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:19,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:19,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-28 03:12:19,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:21,101 INFO L124 PetriNetUnfolderBase]: 8962/16346 cut-off events. [2024-11-28 03:12:21,101 INFO L125 PetriNetUnfolderBase]: For 1763/1763 co-relation queries the response was YES. [2024-11-28 03:12:21,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30244 conditions, 16346 events. 8962/16346 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 139457 event pairs, 4390 based on Foata normal form. 219/15186 useless extension candidates. Maximal degree in co-relation 14374. Up to 7261 conditions per place. [2024-11-28 03:12:21,198 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 74 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-11-28 03:12:21,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 109 transitions, 424 flow [2024-11-28 03:12:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:12:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:12:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-28 03:12:21,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7398648648648649 [2024-11-28 03:12:21,200 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 148 flow. Second operand 4 states and 219 transitions. [2024-11-28 03:12:21,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 109 transitions, 424 flow [2024-11-28 03:12:21,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:12:21,241 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 167 flow [2024-11-28 03:12:21,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-28 03:12:21,244 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-11-28 03:12:21,245 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 167 flow [2024-11-28 03:12:21,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:21,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:21,245 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:21,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:12:21,246 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 03:12:21,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:21,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1766419574, now seen corresponding path program 1 times [2024-11-28 03:12:21,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:21,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988437264] [2024-11-28 03:12:21,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:21,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:21,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:21,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988437264] [2024-11-28 03:12:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988437264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:21,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:21,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:21,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602313518] [2024-11-28 03:12:21,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:21,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:21,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:21,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:21,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:21,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-28 03:12:21,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:21,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:21,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-28 03:12:21,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:22,814 INFO L124 PetriNetUnfolderBase]: 9386/17031 cut-off events. [2024-11-28 03:12:22,814 INFO L125 PetriNetUnfolderBase]: For 3112/3256 co-relation queries the response was YES. [2024-11-28 03:12:22,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32350 conditions, 17031 events. 9386/17031 cut-off events. For 3112/3256 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 145720 event pairs, 1970 based on Foata normal form. 336/16228 useless extension candidates. Maximal degree in co-relation 18871. Up to 9128 conditions per place. [2024-11-28 03:12:23,032 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 53 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-28 03:12:23,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 336 flow [2024-11-28 03:12:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-28 03:12:23,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-11-28 03:12:23,034 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 167 flow. Second operand 3 states and 155 transitions. [2024-11-28 03:12:23,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 336 flow [2024-11-28 03:12:23,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:12:23,038 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 166 flow [2024-11-28 03:12:23,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-11-28 03:12:23,040 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-11-28 03:12:23,041 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 166 flow [2024-11-28 03:12:23,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:23,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:23,042 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 03:12:23,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:12:23,042 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 03:12:23,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1075566630, now seen corresponding path program 1 times [2024-11-28 03:12:23,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:23,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391989731] [2024-11-28 03:12:23,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:23,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:12:23,059 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:12:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:12:23,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:12:23,080 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:12:23,080 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-28 03:12:23,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-28 03:12:23,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-28 03:12:23,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-28 03:12:23,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-28 03:12:23,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-28 03:12:23,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-28 03:12:23,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-28 03:12:23,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-28 03:12:23,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-28 03:12:23,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-28 03:12:23,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-28 03:12:23,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-28 03:12:23,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-28 03:12:23,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-28 03:12:23,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-28 03:12:23,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-28 03:12:23,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:12:23,082 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:23,084 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:12:23,084 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 03:12:23,158 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:12:23,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 222 flow [2024-11-28 03:12:23,182 INFO L124 PetriNetUnfolderBase]: 16/108 cut-off events. [2024-11-28 03:12:23,182 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 03:12:23,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 108 events. 16/108 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 373 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 94. Up to 5 conditions per place. [2024-11-28 03:12:23,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 97 transitions, 222 flow [2024-11-28 03:12:23,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 97 transitions, 222 flow [2024-11-28 03:12:23,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:12:23,189 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;@50d6bcf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:12:23,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 03:12:23,192 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:12:23,193 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 03:12:23,193 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:12:23,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:23,193 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:12:23,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 03:12:23,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:23,194 INFO L85 PathProgramCache]: Analyzing trace with hash 466184000, now seen corresponding path program 1 times [2024-11-28 03:12:23,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:23,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221812781] [2024-11-28 03:12:23,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:23,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:23,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:23,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221812781] [2024-11-28 03:12:23,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221812781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:23,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:23,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183723755] [2024-11-28 03:12:23,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:23,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:23,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:23,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:23,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:23,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-28 03:12:23,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:23,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:23,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-28 03:12:23,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:30,906 INFO L124 PetriNetUnfolderBase]: 58261/94975 cut-off events. [2024-11-28 03:12:30,906 INFO L125 PetriNetUnfolderBase]: For 6417/6417 co-relation queries the response was YES. [2024-11-28 03:12:31,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170307 conditions, 94975 events. 58261/94975 cut-off events. For 6417/6417 co-relation queries the response was YES. Maximal size of possible extension queue 4010. Compared 898112 event pairs, 9510 based on Foata normal form. 19220/107997 useless extension candidates. Maximal degree in co-relation 30712. Up to 57853 conditions per place. [2024-11-28 03:12:31,550 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 67 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-11-28 03:12:31,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 419 flow [2024-11-28 03:12:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2024-11-28 03:12:31,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7800687285223368 [2024-11-28 03:12:31,552 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 222 flow. Second operand 3 states and 227 transitions. [2024-11-28 03:12:31,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 419 flow [2024-11-28 03:12:31,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 407 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-28 03:12:31,561 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 200 flow [2024-11-28 03:12:31,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-11-28 03:12:31,561 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2024-11-28 03:12:31,562 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 200 flow [2024-11-28 03:12:31,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:31,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:31,562 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:12:31,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:12:31,563 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 03:12:31,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1566802659, now seen corresponding path program 1 times [2024-11-28 03:12:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:31,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198784219] [2024-11-28 03:12:31,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:31,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:31,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198784219] [2024-11-28 03:12:31,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198784219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:31,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:31,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:31,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234197282] [2024-11-28 03:12:31,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:31,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:31,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:31,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:31,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:31,626 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-28 03:12:31,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:31,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:31,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-28 03:12:31,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:38,455 INFO L124 PetriNetUnfolderBase]: 52002/86961 cut-off events. [2024-11-28 03:12:38,456 INFO L125 PetriNetUnfolderBase]: For 5477/5477 co-relation queries the response was YES. [2024-11-28 03:12:38,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156347 conditions, 86961 events. 52002/86961 cut-off events. For 5477/5477 co-relation queries the response was YES. Maximal size of possible extension queue 3680. Compared 838918 event pairs, 9510 based on Foata normal form. 1755/82605 useless extension candidates. Maximal degree in co-relation 140780. Up to 49839 conditions per place. [2024-11-28 03:12:39,151 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 66 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-28 03:12:39,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 407 flow [2024-11-28 03:12:39,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:39,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-11-28 03:12:39,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2024-11-28 03:12:39,153 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 200 flow. Second operand 3 states and 210 transitions. [2024-11-28 03:12:39,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 407 flow [2024-11-28 03:12:39,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 115 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:39,166 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 198 flow [2024-11-28 03:12:39,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2024-11-28 03:12:39,168 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -1 predicate places. [2024-11-28 03:12:39,169 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 198 flow [2024-11-28 03:12:39,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:39,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:39,169 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:39,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:12:39,169 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 03:12:39,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1879872117, now seen corresponding path program 1 times [2024-11-28 03:12:39,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:39,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678312483] [2024-11-28 03:12:39,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:39,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:39,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:39,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678312483] [2024-11-28 03:12:39,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678312483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:39,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:39,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:39,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401968721] [2024-11-28 03:12:39,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:39,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:39,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:39,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:39,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-28 03:12:39,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:39,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:39,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-28 03:12:39,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:46,790 INFO L124 PetriNetUnfolderBase]: 57884/92795 cut-off events. [2024-11-28 03:12:46,790 INFO L125 PetriNetUnfolderBase]: For 6263/6263 co-relation queries the response was YES. [2024-11-28 03:12:46,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170843 conditions, 92795 events. 57884/92795 cut-off events. For 6263/6263 co-relation queries the response was YES. Maximal size of possible extension queue 4066. Compared 842451 event pairs, 23016 based on Foata normal form. 1752/87307 useless extension candidates. Maximal degree in co-relation 125209. Up to 57808 conditions per place. [2024-11-28 03:12:47,265 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 66 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-11-28 03:12:47,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 113 transitions, 402 flow [2024-11-28 03:12:47,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-11-28 03:12:47,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2024-11-28 03:12:47,268 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 198 flow. Second operand 3 states and 210 transitions. [2024-11-28 03:12:47,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 113 transitions, 402 flow [2024-11-28 03:12:47,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 113 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:47,294 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 196 flow [2024-11-28 03:12:47,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-11-28 03:12:47,295 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -2 predicate places. [2024-11-28 03:12:47,295 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 196 flow [2024-11-28 03:12:47,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:47,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:47,296 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:47,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:12:47,296 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 03:12:47,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1853507086, now seen corresponding path program 1 times [2024-11-28 03:12:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345691903] [2024-11-28 03:12:47,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:47,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345691903] [2024-11-28 03:12:47,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345691903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:47,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:47,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:47,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094602871] [2024-11-28 03:12:47,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:47,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:47,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:47,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:47,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:47,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-28 03:12:47,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:47,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:47,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-28 03:12:47,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:53,577 INFO L124 PetriNetUnfolderBase]: 51412/82771 cut-off events. [2024-11-28 03:12:53,577 INFO L125 PetriNetUnfolderBase]: For 5600/5600 co-relation queries the response was YES. [2024-11-28 03:12:53,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152151 conditions, 82771 events. 51412/82771 cut-off events. For 5600/5600 co-relation queries the response was YES. Maximal size of possible extension queue 3597. Compared 744001 event pairs, 20568 based on Foata normal form. 1752/77997 useless extension candidates. Maximal degree in co-relation 72464. Up to 49800 conditions per place. [2024-11-28 03:12:54,323 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 65 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-11-28 03:12:54,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 394 flow [2024-11-28 03:12:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2024-11-28 03:12:54,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.718213058419244 [2024-11-28 03:12:54,325 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 196 flow. Second operand 3 states and 209 transitions. [2024-11-28 03:12:54,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 394 flow [2024-11-28 03:12:54,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 112 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:54,335 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 194 flow [2024-11-28 03:12:54,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-11-28 03:12:54,336 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -3 predicate places. [2024-11-28 03:12:54,336 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 194 flow [2024-11-28 03:12:54,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:54,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:54,336 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:54,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:12:54,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 03:12:54,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:54,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1086012409, now seen corresponding path program 1 times [2024-11-28 03:12:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:54,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13736808] [2024-11-28 03:12:54,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:54,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:54,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13736808] [2024-11-28 03:12:54,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13736808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:54,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:54,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:12:54,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177643815] [2024-11-28 03:12:54,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:54,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:12:54,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:54,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:12:54,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:12:54,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-28 03:12:54,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:54,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:54,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-28 03:12:54,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand