./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:53:21,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:53:21,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 14:53:21,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:53:21,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:53:21,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:53:21,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:53:21,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:53:21,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:53:21,957 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:53:21,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:53:21,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:53:21,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:53:21,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:53:21,958 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:53:21,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:53:21,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:53:21,958 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 14:53:21,959 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:53:21,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:53:21,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:53:21,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:53:21,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:53:21,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:53:21,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:53:21,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:53:21,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:21,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:53:21,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:53:21,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:53:21,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:53:21,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:53:21,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:53:21,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:53:21,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:53:21,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:53:21,961 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_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 [2024-11-13 14:53:22,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:53:22,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:53:22,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:53:22,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:53:22,366 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:53:22,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i Unable to find full path for "g++" [2024-11-13 14:53:24,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:53:24,890 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:53:24,890 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-13 14:53:24,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/data/573499613/7735d0c075dc4d23a64f010b3c382e4b/FLAG1d3c04d1e [2024-11-13 14:53:25,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/data/573499613/7735d0c075dc4d23a64f010b3c382e4b [2024-11-13 14:53:25,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:53:25,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:53:25,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:25,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:53:25,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:53:25,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:25" (1/1) ... [2024-11-13 14:53:25,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5c9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:25, skipping insertion in model container [2024-11-13 14:53:25,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:25" (1/1) ... [2024-11-13 14:53:25,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:53:26,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:26,209 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:53:26,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:26,488 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:53:26,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26 WrapperNode [2024-11-13 14:53:26,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:26,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:26,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:53:26,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:53:26,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,571 INFO L138 Inliner]: procedures = 458, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 182 [2024-11-13 14:53:26,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:26,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:53:26,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:53:26,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:53:26,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,605 INFO L175 MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 5, 30]. 81 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 3, 8]. The 13 writes are split as follows [0, 1, 12]. [2024-11-13 14:53:26,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:53:26,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:53:26,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:53:26,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:53:26,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (1/1) ... [2024-11-13 14:53:26,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:26,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:26,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:53:26,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:53:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:53:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:53:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:53:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:53:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-13 14:53:26,721 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-13 14:53:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:53:26,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:53:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:53:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:53:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:53:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:53:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:53:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:53:26,724 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:53:27,122 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:53:27,123 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:53:27,534 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:53:27,534 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:53:27,851 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:53:27,851 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-13 14:53:27,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:27 BoogieIcfgContainer [2024-11-13 14:53:27,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:53:27,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:53:27,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:53:27,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:53:27,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:53:25" (1/3) ... [2024-11-13 14:53:27,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc9515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:27, skipping insertion in model container [2024-11-13 14:53:27,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:26" (2/3) ... [2024-11-13 14:53:27,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc9515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:27, skipping insertion in model container [2024-11-13 14:53:27,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:27" (3/3) ... [2024-11-13 14:53:27,874 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-11-13 14:53:27,893 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:53:27,894 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG safestack_relacy.i that has 2 procedures, 69 locations, 1 initial locations, 7 loop locations, and 12 error locations. [2024-11-13 14:53:27,895 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:53:27,987 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-13 14:53:28,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 81 transitions, 169 flow [2024-11-13 14:53:28,111 INFO L124 PetriNetUnfolderBase]: 12/85 cut-off events. [2024-11-13 14:53:28,118 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:53:28,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 85 events. 12/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 3 conditions per place. [2024-11-13 14:53:28,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 81 transitions, 169 flow [2024-11-13 14:53:28,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 80 transitions, 167 flow [2024-11-13 14:53:28,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:53:28,163 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;@3d79bfa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:53:28,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-13 14:53:28,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:53:28,168 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-13 14:53:28,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:53:28,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:28,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 14:53:28,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:28,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:28,175 INFO L85 PathProgramCache]: Analyzing trace with hash 491990005, now seen corresponding path program 1 times [2024-11-13 14:53:28,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998572880] [2024-11-13 14:53:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:28,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:28,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998572880] [2024-11-13 14:53:28,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998572880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:28,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:28,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:28,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204880237] [2024-11-13 14:53:28,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:28,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:28,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 81 [2024-11-13 14:53:28,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:28,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:28,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 81 [2024-11-13 14:53:28,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:29,132 INFO L124 PetriNetUnfolderBase]: 193/436 cut-off events. [2024-11-13 14:53:29,132 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:53:29,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 436 events. 193/436 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1722 event pairs, 150 based on Foata normal form. 2/340 useless extension candidates. Maximal degree in co-relation 759. Up to 367 conditions per place. [2024-11-13 14:53:29,141 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 44 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-13 14:53:29,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 74 transitions, 247 flow [2024-11-13 14:53:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-13 14:53:29,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2024-11-13 14:53:29,169 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 167 flow. Second operand 3 states and 136 transitions. [2024-11-13 14:53:29,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 74 transitions, 247 flow [2024-11-13 14:53:29,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 247 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:53:29,187 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 159 flow [2024-11-13 14:53:29,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-11-13 14:53:29,196 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2024-11-13 14:53:29,197 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 159 flow [2024-11-13 14:53:29,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:29,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:29,197 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:53:29,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:53:29,198 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:29,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1928178507, now seen corresponding path program 1 times [2024-11-13 14:53:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018798718] [2024-11-13 14:53:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:29,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018798718] [2024-11-13 14:53:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018798718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:29,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:29,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:29,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756042250] [2024-11-13 14:53:29,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:29,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:29,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:29,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:29,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:29,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 81 [2024-11-13 14:53:29,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:29,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:29,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 81 [2024-11-13 14:53:29,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:29,656 INFO L124 PetriNetUnfolderBase]: 193/434 cut-off events. [2024-11-13 14:53:29,656 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:53:29,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 434 events. 193/434 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1698 event pairs, 150 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 780. Up to 367 conditions per place. [2024-11-13 14:53:29,690 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 42 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-11-13 14:53:29,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 72 transitions, 243 flow [2024-11-13 14:53:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-13 14:53:29,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5349794238683128 [2024-11-13 14:53:29,697 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 159 flow. Second operand 3 states and 130 transitions. [2024-11-13 14:53:29,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 72 transitions, 243 flow [2024-11-13 14:53:29,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:29,701 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 155 flow [2024-11-13 14:53:29,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-11-13 14:53:29,704 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2024-11-13 14:53:29,705 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 155 flow [2024-11-13 14:53:29,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:29,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:29,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:29,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:53:29,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:29,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:29,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1848624823, now seen corresponding path program 1 times [2024-11-13 14:53:29,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:29,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506934433] [2024-11-13 14:53:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:29,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:29,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506934433] [2024-11-13 14:53:29,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506934433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:29,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:29,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:29,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266073389] [2024-11-13 14:53:29,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:29,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:29,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:29,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:29,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 81 [2024-11-13 14:53:29,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:29,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:29,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 81 [2024-11-13 14:53:29,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:30,140 INFO L124 PetriNetUnfolderBase]: 194/450 cut-off events. [2024-11-13 14:53:30,141 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:53:30,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 450 events. 194/450 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1834 event pairs, 150 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 780. Up to 377 conditions per place. [2024-11-13 14:53:30,146 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 48 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-13 14:53:30,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 76 transitions, 267 flow [2024-11-13 14:53:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-13 14:53:30,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-13 14:53:30,148 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 155 flow. Second operand 3 states and 140 transitions. [2024-11-13 14:53:30,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 76 transitions, 267 flow [2024-11-13 14:53:30,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:30,154 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 172 flow [2024-11-13 14:53:30,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2024-11-13 14:53:30,155 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2024-11-13 14:53:30,157 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 172 flow [2024-11-13 14:53:30,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:30,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:30,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:30,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:53:30,158 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:30,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1376219066, now seen corresponding path program 1 times [2024-11-13 14:53:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:30,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482166990] [2024-11-13 14:53:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:30,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:30,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482166990] [2024-11-13 14:53:30,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482166990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:30,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:30,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721709189] [2024-11-13 14:53:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:30,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:30,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 81 [2024-11-13 14:53:30,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:30,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:30,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 81 [2024-11-13 14:53:30,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:30,727 INFO L124 PetriNetUnfolderBase]: 194/448 cut-off events. [2024-11-13 14:53:30,727 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 14:53:30,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 448 events. 194/448 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1816 event pairs, 150 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 780. Up to 380 conditions per place. [2024-11-13 14:53:30,730 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 51 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-11-13 14:53:30,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 288 flow [2024-11-13 14:53:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-11-13 14:53:30,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2024-11-13 14:53:30,733 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 172 flow. Second operand 4 states and 161 transitions. [2024-11-13 14:53:30,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 288 flow [2024-11-13 14:53:30,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:30,739 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 190 flow [2024-11-13 14:53:30,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-13 14:53:30,740 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2024-11-13 14:53:30,740 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 190 flow [2024-11-13 14:53:30,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:30,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:30,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:30,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:53:30,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:30,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1760298847, now seen corresponding path program 1 times [2024-11-13 14:53:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:30,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679265170] [2024-11-13 14:53:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:30,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679265170] [2024-11-13 14:53:30,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679265170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:30,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:30,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:30,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144209608] [2024-11-13 14:53:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:30,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:30,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:30,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:30,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 81 [2024-11-13 14:53:30,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:30,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:30,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 81 [2024-11-13 14:53:30,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:31,162 INFO L124 PetriNetUnfolderBase]: 162/399 cut-off events. [2024-11-13 14:53:31,162 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-13 14:53:31,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 399 events. 162/399 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1673 event pairs, 77 based on Foata normal form. 28/366 useless extension candidates. Maximal degree in co-relation 706. Up to 202 conditions per place. [2024-11-13 14:53:31,165 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 69 selfloop transitions, 4 changer transitions 4/100 dead transitions. [2024-11-13 14:53:31,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 390 flow [2024-11-13 14:53:31,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-13 14:53:31,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-11-13 14:53:31,169 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 190 flow. Second operand 3 states and 163 transitions. [2024-11-13 14:53:31,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 390 flow [2024-11-13 14:53:31,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 100 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:31,180 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 171 flow [2024-11-13 14:53:31,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2024-11-13 14:53:31,182 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2024-11-13 14:53:31,183 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 171 flow [2024-11-13 14:53:31,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:31,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:31,183 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:31,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:53:31,184 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:31,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1602414519, now seen corresponding path program 1 times [2024-11-13 14:53:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:31,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162222882] [2024-11-13 14:53:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:31,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:31,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162222882] [2024-11-13 14:53:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162222882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401597408] [2024-11-13 14:53:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:31,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:31,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:31,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:31,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:53:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:31,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:53:31,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:31,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:31,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401597408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:31,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:31,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 14:53:31,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557703943] [2024-11-13 14:53:31,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:31,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:31,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:31,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:53:31,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 81 [2024-11-13 14:53:31,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:31,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:31,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 81 [2024-11-13 14:53:31,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:31,965 INFO L124 PetriNetUnfolderBase]: 132/314 cut-off events. [2024-11-13 14:53:31,965 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-13 14:53:31,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 314 events. 132/314 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1143 event pairs, 100 based on Foata normal form. 2/287 useless extension candidates. Maximal degree in co-relation 611. Up to 257 conditions per place. [2024-11-13 14:53:31,967 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 42 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-11-13 14:53:31,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 261 flow [2024-11-13 14:53:31,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-11-13 14:53:31,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-11-13 14:53:31,970 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 171 flow. Second operand 4 states and 148 transitions. [2024-11-13 14:53:31,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 261 flow [2024-11-13 14:53:31,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:31,974 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 173 flow [2024-11-13 14:53:31,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-11-13 14:53:31,977 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2024-11-13 14:53:31,977 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 173 flow [2024-11-13 14:53:31,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:31,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:31,977 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:32,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:53:32,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 14:53:32,178 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:32,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1864757990, now seen corresponding path program 1 times [2024-11-13 14:53:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:32,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641604658] [2024-11-13 14:53:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:32,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:32,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:32,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641604658] [2024-11-13 14:53:32,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641604658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:32,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693686262] [2024-11-13 14:53:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:32,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:32,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:32,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:32,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:53:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:32,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:53:32,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:32,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:32,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693686262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:32,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:32,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 14:53:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35375896] [2024-11-13 14:53:32,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:32,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:53:32,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:53:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:53:32,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 81 [2024-11-13 14:53:32,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 173 flow. Second operand has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:32,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:32,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 81 [2024-11-13 14:53:32,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:32,943 INFO L124 PetriNetUnfolderBase]: 134/338 cut-off events. [2024-11-13 14:53:32,943 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-13 14:53:32,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 338 events. 134/338 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1279 event pairs, 100 based on Foata normal form. 3/310 useless extension candidates. Maximal degree in co-relation 587. Up to 262 conditions per place. [2024-11-13 14:53:32,945 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 51 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-11-13 14:53:32,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 76 transitions, 337 flow [2024-11-13 14:53:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:53:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:53:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2024-11-13 14:53:32,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42151675485008816 [2024-11-13 14:53:32,947 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 173 flow. Second operand 7 states and 239 transitions. [2024-11-13 14:53:32,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 76 transitions, 337 flow [2024-11-13 14:53:32,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 76 transitions, 315 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:53:32,950 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 226 flow [2024-11-13 14:53:32,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-11-13 14:53:32,951 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2024-11-13 14:53:32,951 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 226 flow [2024-11-13 14:53:32,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:32,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:32,952 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:32,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:33,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:33,156 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:33,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 488235084, now seen corresponding path program 1 times [2024-11-13 14:53:33,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:33,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634154254] [2024-11-13 14:53:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:33,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:33,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:33,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634154254] [2024-11-13 14:53:33,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634154254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:33,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:33,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:33,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058066919] [2024-11-13 14:53:33,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:33,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:33,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:33,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:33,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:33,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 81 [2024-11-13 14:53:33,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:33,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:33,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 81 [2024-11-13 14:53:33,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:33,572 INFO L124 PetriNetUnfolderBase]: 133/333 cut-off events. [2024-11-13 14:53:33,572 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-13 14:53:33,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 333 events. 133/333 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1227 event pairs, 100 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 638. Up to 255 conditions per place. [2024-11-13 14:53:33,575 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 43 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2024-11-13 14:53:33,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 317 flow [2024-11-13 14:53:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-13 14:53:33,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-11-13 14:53:33,577 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 226 flow. Second operand 4 states and 143 transitions. [2024-11-13 14:53:33,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 317 flow [2024-11-13 14:53:33,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 301 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:33,584 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 217 flow [2024-11-13 14:53:33,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-11-13 14:53:33,585 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2024-11-13 14:53:33,587 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 217 flow [2024-11-13 14:53:33,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:33,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:33,588 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:33,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:53:33,588 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:33,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash -58982580, now seen corresponding path program 1 times [2024-11-13 14:53:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:33,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070285029] [2024-11-13 14:53:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:33,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070285029] [2024-11-13 14:53:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070285029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797326152] [2024-11-13 14:53:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:33,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:33,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:33,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:33,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:53:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:33,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:53:33,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:34,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797326152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:34,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 14:53:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192262556] [2024-11-13 14:53:34,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:34,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:53:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:53:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:53:34,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 81 [2024-11-13 14:53:34,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 217 flow. Second operand has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:34,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:34,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 81 [2024-11-13 14:53:34,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:34,572 INFO L124 PetriNetUnfolderBase]: 132/328 cut-off events. [2024-11-13 14:53:34,572 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-13 14:53:34,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 328 events. 132/328 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1091 event pairs, 100 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 631. Up to 254 conditions per place. [2024-11-13 14:53:34,575 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 47 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-11-13 14:53:34,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 71 transitions, 328 flow [2024-11-13 14:53:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:53:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:53:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-11-13 14:53:34,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.345679012345679 [2024-11-13 14:53:34,577 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 217 flow. Second operand 7 states and 196 transitions. [2024-11-13 14:53:34,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 71 transitions, 328 flow [2024-11-13 14:53:34,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 318 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:53:34,579 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 231 flow [2024-11-13 14:53:34,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-11-13 14:53:34,582 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2024-11-13 14:53:34,582 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 231 flow [2024-11-13 14:53:34,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:34,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:34,583 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-13 14:53:34,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:34,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:34,788 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:34,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash -945313372, now seen corresponding path program 1 times [2024-11-13 14:53:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:34,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576659684] [2024-11-13 14:53:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:34,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 14:53:34,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576659684] [2024-11-13 14:53:34,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576659684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:34,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:34,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:34,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425470512] [2024-11-13 14:53:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:34,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:34,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 81 [2024-11-13 14:53:34,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2024-11-13 14:53:34,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:34,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 81 [2024-11-13 14:53:34,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:35,075 INFO L124 PetriNetUnfolderBase]: 132/327 cut-off events. [2024-11-13 14:53:35,075 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-11-13 14:53:35,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 327 events. 132/327 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1087 event pairs, 100 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 641. Up to 263 conditions per place. [2024-11-13 14:53:35,077 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 43 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2024-11-13 14:53:35,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 68 transitions, 333 flow [2024-11-13 14:53:35,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:35,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-13 14:53:35,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-11-13 14:53:35,079 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 231 flow. Second operand 4 states and 147 transitions. [2024-11-13 14:53:35,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 68 transitions, 333 flow [2024-11-13 14:53:35,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 68 transitions, 320 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 14:53:35,084 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 242 flow [2024-11-13 14:53:35,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-11-13 14:53:35,085 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2024-11-13 14:53:35,085 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 242 flow [2024-11-13 14:53:35,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2024-11-13 14:53:35,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:35,085 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-13 14:53:35,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:53:35,086 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:35,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2112302362, now seen corresponding path program 2 times [2024-11-13 14:53:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:35,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010046022] [2024-11-13 14:53:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:53:35,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:35,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010046022] [2024-11-13 14:53:35,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010046022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:35,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118384558] [2024-11-13 14:53:35,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:53:35,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:35,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:35,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:53:35,361 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:53:35,361 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:53:35,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:53:35,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:53:35,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:53:35,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118384558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:35,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:35,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2024-11-13 14:53:35,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25834282] [2024-11-13 14:53:35,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:35,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:53:35,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:35,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:53:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:53:35,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 81 [2024-11-13 14:53:35,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 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) [2024-11-13 14:53:35,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:35,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 81 [2024-11-13 14:53:35,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:35,756 INFO L124 PetriNetUnfolderBase]: 132/326 cut-off events. [2024-11-13 14:53:35,756 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-11-13 14:53:35,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 326 events. 132/326 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1083 event pairs, 100 based on Foata normal form. 1/300 useless extension candidates. Maximal degree in co-relation 651. Up to 254 conditions per place. [2024-11-13 14:53:35,758 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 46 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-11-13 14:53:35,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 69 transitions, 350 flow [2024-11-13 14:53:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-13 14:53:35,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4012345679012346 [2024-11-13 14:53:35,760 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 242 flow. Second operand 4 states and 130 transitions. [2024-11-13 14:53:35,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 69 transitions, 350 flow [2024-11-13 14:53:35,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 330 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 14:53:35,764 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 247 flow [2024-11-13 14:53:35,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-11-13 14:53:35,765 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2024-11-13 14:53:35,765 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 247 flow [2024-11-13 14:53:35,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 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) [2024-11-13 14:53:35,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:35,765 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:35,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:53:35,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:35,970 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:35,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash 806142028, now seen corresponding path program 2 times [2024-11-13 14:53:35,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:35,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618294334] [2024-11-13 14:53:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:35,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:53:36,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:53:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:53:36,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:53:36,073 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:53:36,074 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-13 14:53:36,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-13 14:53:36,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-13 14:53:36,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-13 14:53:36,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-13 14:53:36,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-13 14:53:36,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-13 14:53:36,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-13 14:53:36,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-13 14:53:36,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-13 14:53:36,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-13 14:53:36,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-13 14:53:36,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-13 14:53:36,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:53:36,081 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:36,084 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:53:36,085 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 14:53:36,141 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 14:53:36,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 120 transitions, 256 flow [2024-11-13 14:53:36,161 INFO L124 PetriNetUnfolderBase]: 23/147 cut-off events. [2024-11-13 14:53:36,161 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 14:53:36,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 147 events. 23/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 473 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2024-11-13 14:53:36,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 120 transitions, 256 flow [2024-11-13 14:53:36,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 120 transitions, 256 flow [2024-11-13 14:53:36,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:53:36,166 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;@3d79bfa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:53:36,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-13 14:53:36,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:53:36,168 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-13 14:53:36,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:53:36,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:36,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 14:53:36,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:36,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:36,169 INFO L85 PathProgramCache]: Analyzing trace with hash 606506605, now seen corresponding path program 1 times [2024-11-13 14:53:36,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:36,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885659978] [2024-11-13 14:53:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:36,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:36,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:36,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885659978] [2024-11-13 14:53:36,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885659978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:36,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:36,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884289780] [2024-11-13 14:53:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:36,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:36,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:36,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 120 [2024-11-13 14:53:36,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 120 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:36,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:36,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 120 [2024-11-13 14:53:36,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:38,382 INFO L124 PetriNetUnfolderBase]: 11368/17474 cut-off events. [2024-11-13 14:53:38,382 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-11-13 14:53:38,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34059 conditions, 17474 events. 11368/17474 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 106265 event pairs, 9489 based on Foata normal form. 2/14153 useless extension candidates. Maximal degree in co-relation 26942. Up to 16439 conditions per place. [2024-11-13 14:53:38,530 INFO L140 encePairwiseOnDemand]: 109/120 looper letters, 76 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-11-13 14:53:38,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 111 transitions, 394 flow [2024-11-13 14:53:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-11-13 14:53:38,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-13 14:53:38,532 INFO L175 Difference]: Start difference. First operand has 103 places, 120 transitions, 256 flow. Second operand 3 states and 186 transitions. [2024-11-13 14:53:38,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 111 transitions, 394 flow [2024-11-13 14:53:38,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 111 transitions, 394 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:53:38,535 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 242 flow [2024-11-13 14:53:38,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2024-11-13 14:53:38,536 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 0 predicate places. [2024-11-13 14:53:38,536 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 242 flow [2024-11-13 14:53:38,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:38,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:38,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:53:38,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:53:38,537 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:38,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1621836213, now seen corresponding path program 1 times [2024-11-13 14:53:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:38,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387297413] [2024-11-13 14:53:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:38,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:38,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387297413] [2024-11-13 14:53:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387297413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:38,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:38,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:38,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956546367] [2024-11-13 14:53:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:38,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:38,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:38,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 120 [2024-11-13 14:53:38,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:38,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:38,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 120 [2024-11-13 14:53:38,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:40,500 INFO L124 PetriNetUnfolderBase]: 11368/17472 cut-off events. [2024-11-13 14:53:40,501 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-11-13 14:53:40,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34058 conditions, 17472 events. 11368/17472 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 106331 event pairs, 9489 based on Foata normal form. 2/14151 useless extension candidates. Maximal degree in co-relation 34022. Up to 16439 conditions per place. [2024-11-13 14:53:40,581 INFO L140 encePairwiseOnDemand]: 116/120 looper letters, 74 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2024-11-13 14:53:40,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 109 transitions, 390 flow [2024-11-13 14:53:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-11-13 14:53:40,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-13 14:53:40,584 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 242 flow. Second operand 3 states and 177 transitions. [2024-11-13 14:53:40,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 109 transitions, 390 flow [2024-11-13 14:53:40,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 386 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:40,587 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 238 flow [2024-11-13 14:53:40,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2024-11-13 14:53:40,588 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, -2 predicate places. [2024-11-13 14:53:40,588 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 238 flow [2024-11-13 14:53:40,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:40,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:40,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:40,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:53:40,589 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:40,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash -488508087, now seen corresponding path program 1 times [2024-11-13 14:53:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:40,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977528] [2024-11-13 14:53:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:40,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:40,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977528] [2024-11-13 14:53:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:40,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:40,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577145580] [2024-11-13 14:53:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:40,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:40,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:40,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 120 [2024-11-13 14:53:40,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:40,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:40,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 120 [2024-11-13 14:53:40,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:42,251 INFO L124 PetriNetUnfolderBase]: 11369/17488 cut-off events. [2024-11-13 14:53:42,251 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-11-13 14:53:42,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34082 conditions, 17488 events. 11369/17488 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 106425 event pairs, 9489 based on Foata normal form. 2/14167 useless extension candidates. Maximal degree in co-relation 34022. Up to 16449 conditions per place. [2024-11-13 14:53:42,351 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 80 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-11-13 14:53:42,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 414 flow [2024-11-13 14:53:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-13 14:53:42,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2024-11-13 14:53:42,354 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 238 flow. Second operand 3 states and 187 transitions. [2024-11-13 14:53:42,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 414 flow [2024-11-13 14:53:42,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 113 transitions, 408 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:42,358 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 255 flow [2024-11-13 14:53:42,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2024-11-13 14:53:42,358 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, -1 predicate places. [2024-11-13 14:53:42,359 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 255 flow [2024-11-13 14:53:42,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:42,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:42,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:42,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:53:42,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:42,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 202607034, now seen corresponding path program 1 times [2024-11-13 14:53:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:42,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254719256] [2024-11-13 14:53:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:42,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:42,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254719256] [2024-11-13 14:53:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254719256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:42,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:42,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666475743] [2024-11-13 14:53:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:42,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:42,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 120 [2024-11-13 14:53:42,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:42,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:42,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 120 [2024-11-13 14:53:42,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:44,067 INFO L124 PetriNetUnfolderBase]: 11369/17486 cut-off events. [2024-11-13 14:53:44,068 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2024-11-13 14:53:44,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34091 conditions, 17486 events. 11369/17486 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 106350 event pairs, 9489 based on Foata normal form. 2/14167 useless extension candidates. Maximal degree in co-relation 34022. Up to 16452 conditions per place. [2024-11-13 14:53:44,123 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 83 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2024-11-13 14:53:44,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 114 transitions, 435 flow [2024-11-13 14:53:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-13 14:53:44,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-11-13 14:53:44,127 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 255 flow. Second operand 4 states and 213 transitions. [2024-11-13 14:53:44,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 114 transitions, 435 flow [2024-11-13 14:53:44,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 114 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:44,130 INFO L231 Difference]: Finished difference. Result has 106 places, 112 transitions, 273 flow [2024-11-13 14:53:44,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=106, PETRI_TRANSITIONS=112} [2024-11-13 14:53:44,131 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2024-11-13 14:53:44,131 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 112 transitions, 273 flow [2024-11-13 14:53:44,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:44,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:44,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:44,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:53:44,132 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:44,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 492567294, now seen corresponding path program 1 times [2024-11-13 14:53:44,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:44,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917554636] [2024-11-13 14:53:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:44,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:44,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:44,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917554636] [2024-11-13 14:53:44,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917554636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:44,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:44,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:44,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197900787] [2024-11-13 14:53:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:44,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:44,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:44,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:44,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:44,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 120 [2024-11-13 14:53:44,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 112 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:44,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:44,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 120 [2024-11-13 14:53:44,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:45,779 INFO L124 PetriNetUnfolderBase]: 13068/20170 cut-off events. [2024-11-13 14:53:45,779 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-13 14:53:45,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39105 conditions, 20170 events. 13068/20170 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 132245 event pairs, 5470 based on Foata normal form. 83/16666 useless extension candidates. Maximal degree in co-relation 39059. Up to 13739 conditions per place. [2024-11-13 14:53:45,848 INFO L140 encePairwiseOnDemand]: 111/120 looper letters, 141 selfloop transitions, 5 changer transitions 1/177 dead transitions. [2024-11-13 14:53:45,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 177 transitions, 703 flow [2024-11-13 14:53:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2024-11-13 14:53:45,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-11-13 14:53:45,850 INFO L175 Difference]: Start difference. First operand has 106 places, 112 transitions, 273 flow. Second operand 3 states and 250 transitions. [2024-11-13 14:53:45,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 177 transitions, 703 flow [2024-11-13 14:53:45,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:45,854 INFO L231 Difference]: Finished difference. Result has 107 places, 113 transitions, 296 flow [2024-11-13 14:53:45,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=107, PETRI_TRANSITIONS=113} [2024-11-13 14:53:45,855 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2024-11-13 14:53:45,855 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions, 296 flow [2024-11-13 14:53:45,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:45,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:45,856 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:45,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:53:45,856 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:45,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1295736639, now seen corresponding path program 1 times [2024-11-13 14:53:45,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:45,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42189793] [2024-11-13 14:53:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:45,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42189793] [2024-11-13 14:53:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42189793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604527997] [2024-11-13 14:53:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:45,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:45,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:45,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:53:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:46,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:53:46,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:46,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:46,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604527997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:46,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:46,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 14:53:46,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262935608] [2024-11-13 14:53:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:46,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:46,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:46,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:46,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:53:46,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 120 [2024-11-13 14:53:46,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 113 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:46,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:46,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 120 [2024-11-13 14:53:46,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:47,436 INFO L124 PetriNetUnfolderBase]: 9728/15043 cut-off events. [2024-11-13 14:53:47,436 INFO L125 PetriNetUnfolderBase]: For 3347/4797 co-relation queries the response was YES. [2024-11-13 14:53:47,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31133 conditions, 15043 events. 9728/15043 cut-off events. For 3347/4797 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 90665 event pairs, 8129 based on Foata normal form. 2/13547 useless extension candidates. Maximal degree in co-relation 31084. Up to 14184 conditions per place. [2024-11-13 14:53:47,509 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 78 selfloop transitions, 7 changer transitions 0/111 dead transitions. [2024-11-13 14:53:47,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 111 transitions, 458 flow [2024-11-13 14:53:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-13 14:53:47,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42291666666666666 [2024-11-13 14:53:47,511 INFO L175 Difference]: Start difference. First operand has 107 places, 113 transitions, 296 flow. Second operand 4 states and 203 transitions. [2024-11-13 14:53:47,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 111 transitions, 458 flow [2024-11-13 14:53:47,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 111 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:47,521 INFO L231 Difference]: Finished difference. Result has 107 places, 111 transitions, 297 flow [2024-11-13 14:53:47,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=107, PETRI_TRANSITIONS=111} [2024-11-13 14:53:47,522 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2024-11-13 14:53:47,522 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 111 transitions, 297 flow [2024-11-13 14:53:47,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:47,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:47,523 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:47,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:53:47,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:53:47,723 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:47,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1513129498, now seen corresponding path program 1 times [2024-11-13 14:53:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:47,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108036778] [2024-11-13 14:53:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:47,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:47,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108036778] [2024-11-13 14:53:47,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108036778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:47,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097737078] [2024-11-13 14:53:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:47,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:47,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:47,862 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:47,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:53:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:47,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:53:47,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:48,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097737078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:48,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:48,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 14:53:48,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261038532] [2024-11-13 14:53:48,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:48,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:53:48,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:53:48,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:53:48,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 120 [2024-11-13 14:53:48,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 111 transitions, 297 flow. Second operand has 10 states, 10 states have (on average 32.0) internal successors, (320), 10 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:48,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:48,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 120 [2024-11-13 14:53:48,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:49,956 INFO L124 PetriNetUnfolderBase]: 9730/15067 cut-off events. [2024-11-13 14:53:49,956 INFO L125 PetriNetUnfolderBase]: For 1857/3307 co-relation queries the response was YES. [2024-11-13 14:53:49,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31102 conditions, 15067 events. 9730/15067 cut-off events. For 1857/3307 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 91094 event pairs, 8129 based on Foata normal form. 3/13570 useless extension candidates. Maximal degree in co-relation 31006. Up to 14189 conditions per place. [2024-11-13 14:53:50,005 INFO L140 encePairwiseOnDemand]: 113/120 looper letters, 87 selfloop transitions, 10 changer transitions 0/123 dead transitions. [2024-11-13 14:53:50,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 123 transitions, 535 flow [2024-11-13 14:53:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:53:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:53:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 309 transitions. [2024-11-13 14:53:50,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3678571428571429 [2024-11-13 14:53:50,008 INFO L175 Difference]: Start difference. First operand has 107 places, 111 transitions, 297 flow. Second operand 7 states and 309 transitions. [2024-11-13 14:53:50,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 123 transitions, 535 flow [2024-11-13 14:53:50,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 513 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:53:50,011 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 352 flow [2024-11-13 14:53:50,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=352, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-11-13 14:53:50,012 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2024-11-13 14:53:50,012 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 352 flow [2024-11-13 14:53:50,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.0) internal successors, (320), 10 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:50,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:50,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:50,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:53:50,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:50,218 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:50,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:50,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1947410410, now seen corresponding path program 1 times [2024-11-13 14:53:50,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:50,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720512167] [2024-11-13 14:53:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:50,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:50,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720512167] [2024-11-13 14:53:50,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720512167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771427323] [2024-11-13 14:53:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:50,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:50,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:50,290 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:50,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:53:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:50,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:53:50,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:53:50,479 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771427323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:50,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:50,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-13 14:53:50,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526942057] [2024-11-13 14:53:50,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:50,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:50,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:50,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:53:50,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 120 [2024-11-13 14:53:50,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:50,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:50,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 120 [2024-11-13 14:53:50,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:51,689 INFO L124 PetriNetUnfolderBase]: 9729/15062 cut-off events. [2024-11-13 14:53:51,690 INFO L125 PetriNetUnfolderBase]: For 1874/3324 co-relation queries the response was YES. [2024-11-13 14:53:51,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31103 conditions, 15062 events. 9729/15062 cut-off events. For 1874/3324 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 90779 event pairs, 8129 based on Foata normal form. 1/13567 useless extension candidates. Maximal degree in co-relation 31059. Up to 14182 conditions per place. [2024-11-13 14:53:51,769 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 79 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2024-11-13 14:53:51,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 116 transitions, 514 flow [2024-11-13 14:53:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-13 14:53:51,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-11-13 14:53:51,771 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 352 flow. Second operand 4 states and 198 transitions. [2024-11-13 14:53:51,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 116 transitions, 514 flow [2024-11-13 14:53:51,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 498 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:51,775 INFO L231 Difference]: Finished difference. Result has 116 places, 115 transitions, 342 flow [2024-11-13 14:53:51,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=116, PETRI_TRANSITIONS=115} [2024-11-13 14:53:51,776 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 13 predicate places. [2024-11-13 14:53:51,776 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 115 transitions, 342 flow [2024-11-13 14:53:51,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:51,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:51,777 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:51,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:53:51,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:51,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:51,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash -742893726, now seen corresponding path program 1 times [2024-11-13 14:53:51,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:51,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640120818] [2024-11-13 14:53:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:51,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:52,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:53:52,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640120818] [2024-11-13 14:53:52,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640120818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344189000] [2024-11-13 14:53:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:52,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:52,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:52,069 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:52,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:53:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:52,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:53:52,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:53:52,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:53:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344189000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:52,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2024-11-13 14:53:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009185276] [2024-11-13 14:53:52,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:52,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:53:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:53:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:53:52,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 120 [2024-11-13 14:53:52,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 115 transitions, 342 flow. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:52,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:52,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 120 [2024-11-13 14:53:52,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:54,647 INFO L124 PetriNetUnfolderBase]: 11398/17701 cut-off events. [2024-11-13 14:53:54,647 INFO L125 PetriNetUnfolderBase]: For 2430/2430 co-relation queries the response was YES. [2024-11-13 14:53:54,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36710 conditions, 17701 events. 11398/17701 cut-off events. For 2430/2430 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 115688 event pairs, 4689 based on Foata normal form. 734/15909 useless extension candidates. Maximal degree in co-relation 36659. Up to 11284 conditions per place. [2024-11-13 14:53:54,748 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 200 selfloop transitions, 13 changer transitions 2/237 dead transitions. [2024-11-13 14:53:54,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 237 transitions, 1010 flow [2024-11-13 14:53:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:53:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 14:53:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 406 transitions. [2024-11-13 14:53:54,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37592592592592594 [2024-11-13 14:53:54,751 INFO L175 Difference]: Start difference. First operand has 116 places, 115 transitions, 342 flow. Second operand 9 states and 406 transitions. [2024-11-13 14:53:54,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 237 transitions, 1010 flow [2024-11-13 14:53:54,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 237 transitions, 1000 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:53:54,758 INFO L231 Difference]: Finished difference. Result has 121 places, 113 transitions, 355 flow [2024-11-13 14:53:54,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=355, PETRI_PLACES=121, PETRI_TRANSITIONS=113} [2024-11-13 14:53:54,759 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 18 predicate places. [2024-11-13 14:53:54,759 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 113 transitions, 355 flow [2024-11-13 14:53:54,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:54,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:54,759 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-13 14:53:54,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:53:54,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 14:53:54,960 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:54,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -395794148, now seen corresponding path program 1 times [2024-11-13 14:53:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:54,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511456572] [2024-11-13 14:53:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:54,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 14:53:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511456572] [2024-11-13 14:53:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511456572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:55,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:55,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:55,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466637948] [2024-11-13 14:53:55,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:55,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:55,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 120 [2024-11-13 14:53:55,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 113 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:55,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:55,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 120 [2024-11-13 14:53:55,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:56,389 INFO L124 PetriNetUnfolderBase]: 9728/15049 cut-off events. [2024-11-13 14:53:56,389 INFO L125 PetriNetUnfolderBase]: For 3626/4351 co-relation queries the response was YES. [2024-11-13 14:53:56,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32000 conditions, 15049 events. 9728/15049 cut-off events. For 3626/4351 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 90575 event pairs, 8129 based on Foata normal form. 1/13554 useless extension candidates. Maximal degree in co-relation 31948. Up to 14190 conditions per place. [2024-11-13 14:53:56,453 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 79 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2024-11-13 14:53:56,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 529 flow [2024-11-13 14:53:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-13 14:53:56,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-11-13 14:53:56,455 INFO L175 Difference]: Start difference. First operand has 121 places, 113 transitions, 355 flow. Second operand 4 states and 202 transitions. [2024-11-13 14:53:56,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 529 flow [2024-11-13 14:53:56,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 512 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-13 14:53:56,460 INFO L231 Difference]: Finished difference. Result has 117 places, 113 transitions, 362 flow [2024-11-13 14:53:56,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=117, PETRI_TRANSITIONS=113} [2024-11-13 14:53:56,461 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 14 predicate places. [2024-11-13 14:53:56,461 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 113 transitions, 362 flow [2024-11-13 14:53:56,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:56,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:56,462 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-13 14:53:56,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 14:53:56,462 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:56,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:56,463 INFO L85 PathProgramCache]: Analyzing trace with hash -793239322, now seen corresponding path program 2 times [2024-11-13 14:53:56,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:56,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101018150] [2024-11-13 14:53:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:56,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:53:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:56,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101018150] [2024-11-13 14:53:56,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101018150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:56,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51746832] [2024-11-13 14:53:56,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:53:56,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:56,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:56,588 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:56,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:53:56,708 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:53:56,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:53:56,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:53:56,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:53:56,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:53:56,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51746832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:56,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:56,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2024-11-13 14:53:56,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887402716] [2024-11-13 14:53:56,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:56,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:53:56,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:56,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:53:56,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:53:56,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 120 [2024-11-13 14:53:56,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 113 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:56,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:56,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 120 [2024-11-13 14:53:56,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:58,121 INFO L124 PetriNetUnfolderBase]: 9728/15048 cut-off events. [2024-11-13 14:53:58,121 INFO L125 PetriNetUnfolderBase]: For 3496/4221 co-relation queries the response was YES. [2024-11-13 14:53:58,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31190 conditions, 15048 events. 9728/15048 cut-off events. For 3496/4221 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 90500 event pairs, 8129 based on Foata normal form. 1/13553 useless extension candidates. Maximal degree in co-relation 31138. Up to 14181 conditions per place. [2024-11-13 14:53:58,200 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 82 selfloop transitions, 9 changer transitions 0/114 dead transitions. [2024-11-13 14:53:58,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 114 transitions, 542 flow [2024-11-13 14:53:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-11-13 14:53:58,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-11-13 14:53:58,202 INFO L175 Difference]: Start difference. First operand has 117 places, 113 transitions, 362 flow. Second operand 4 states and 185 transitions. [2024-11-13 14:53:58,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 114 transitions, 542 flow [2024-11-13 14:53:58,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 522 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 14:53:58,207 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 367 flow [2024-11-13 14:53:58,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=367, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2024-11-13 14:53:58,208 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 13 predicate places. [2024-11-13 14:53:58,208 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 367 flow [2024-11-13 14:53:58,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:58,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:58,209 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:58,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:53:58,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37e777d-e5c5-458e-b3d7-f4f409ecaa83/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:53:58,410 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:58,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1716705479, now seen corresponding path program 1 times [2024-11-13 14:53:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:58,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816621342] [2024-11-13 14:53:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:58,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:53:58,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816621342] [2024-11-13 14:53:58,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816621342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:58,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:58,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461415886] [2024-11-13 14:53:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:58,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:58,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 120 [2024-11-13 14:53:58,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:58,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:58,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 120 [2024-11-13 14:53:58,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:59,806 INFO L124 PetriNetUnfolderBase]: 9810/15124 cut-off events. [2024-11-13 14:53:59,806 INFO L125 PetriNetUnfolderBase]: For 1299/1299 co-relation queries the response was YES. [2024-11-13 14:53:59,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31438 conditions, 15124 events. 9810/15124 cut-off events. For 1299/1299 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 89056 event pairs, 6571 based on Foata normal form. 1/13643 useless extension candidates. Maximal degree in co-relation 31360. Up to 11620 conditions per place. [2024-11-13 14:53:59,885 INFO L140 encePairwiseOnDemand]: 112/120 looper letters, 131 selfloop transitions, 8 changer transitions 1/171 dead transitions. [2024-11-13 14:53:59,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 171 transitions, 759 flow [2024-11-13 14:53:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-11-13 14:53:59,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-11-13 14:53:59,887 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 367 flow. Second operand 3 states and 237 transitions. [2024-11-13 14:53:59,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 171 transitions, 759 flow [2024-11-13 14:53:59,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 171 transitions, 748 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:59,908 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 375 flow [2024-11-13 14:53:59,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2024-11-13 14:53:59,909 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 12 predicate places. [2024-11-13 14:53:59,909 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 375 flow [2024-11-13 14:53:59,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:59,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:59,910 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:59,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 14:53:59,910 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:53:59,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash 486544128, now seen corresponding path program 1 times [2024-11-13 14:53:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:59,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106461877] [2024-11-13 14:53:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:59,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:53:59,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:53:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:53:59,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:53:59,972 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:53:59,973 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-13 14:53:59,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-13 14:53:59,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-13 14:53:59,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-13 14:53:59,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-13 14:53:59,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-13 14:53:59,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-13 14:53:59,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-13 14:53:59,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-13 14:53:59,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-13 14:53:59,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-13 14:53:59,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-13 14:53:59,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-13 14:53:59,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 14:53:59,976 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:59,977 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:53:59,977 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 14:54:00,041 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 14:54:00,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 159 transitions, 345 flow [2024-11-13 14:54:00,068 INFO L124 PetriNetUnfolderBase]: 37/228 cut-off events. [2024-11-13 14:54:00,068 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-13 14:54:00,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 37/228 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 857 event pairs, 1 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 155. Up to 12 conditions per place. [2024-11-13 14:54:00,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 159 transitions, 345 flow [2024-11-13 14:54:00,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 159 transitions, 345 flow [2024-11-13 14:54:00,073 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:54:00,074 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;@3d79bfa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:54:00,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-13 14:54:00,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:54:00,076 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-13 14:54:00,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:54:00,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:54:00,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 14:54:00,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 14:54:00,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash 758241100, now seen corresponding path program 1 times [2024-11-13 14:54:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:54:00,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963928050] [2024-11-13 14:54:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:00,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:54:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:54:00,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:54:00,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963928050] [2024-11-13 14:54:00,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963928050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:00,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:00,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:54:00,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245159812] [2024-11-13 14:54:00,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:00,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:54:00,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:54:00,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:54:00,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:54:00,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 159 [2024-11-13 14:54:00,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 159 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:54:00,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:54:00,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 159 [2024-11-13 14:54:00,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand