./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:41:35,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:41:35,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:41:35,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:41:35,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:41:35,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:41:35,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:41:35,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:41:35,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:41:35,258 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:41:35,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:41:35,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:41:35,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:41:35,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:41:35,260 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:41:35,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:41:35,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:41:35,260 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:41:35,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:41:35,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:41:35,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:41:35,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:41:35,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:41:35,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:41:35,261 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:41:35,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:41:35,262 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:41:35,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:41:35,262 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:41:35,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:41:35,262 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:41:35,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:41:35,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:41:35,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:41:35,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:41:35,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:41:35,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:41:35,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:41:35,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:41:35,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:41:35,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:41:35,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:41:35,266 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:41:35,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:41:35,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:41:35,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:41:35,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:41:35,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:41:35,267 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:41:35,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:41:35,268 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_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2024-11-28 03:41:35,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:41:35,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:41:35,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:41:35,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:41:35,613 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:41:35,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-11-28 03:41:39,374 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/data/9bb048ae6/e614952dd4264cf298f2ef200b106d67/FLAGd16611ffb [2024-11-28 03:41:39,785 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:41:39,786 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-11-28 03:41:39,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/data/9bb048ae6/e614952dd4264cf298f2ef200b106d67/FLAGd16611ffb [2024-11-28 03:41:39,878 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/data/9bb048ae6/e614952dd4264cf298f2ef200b106d67 [2024-11-28 03:41:39,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:41:39,890 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:41:39,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:41:39,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:41:39,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:41:39,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:41:39" (1/1) ... [2024-11-28 03:41:39,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce1cc38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:39, skipping insertion in model container [2024-11-28 03:41:39,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:41:39" (1/1) ... [2024-11-28 03:41:39,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:41:40,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:41:40,221 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:41:40,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:41:40,284 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:41:40,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40 WrapperNode [2024-11-28 03:41:40,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:41:40,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:41:40,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:41:40,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:41:40,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,326 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 109 [2024-11-28 03:41:40,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:41:40,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:41:40,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:41:40,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:41:40,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,343 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,361 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 03:41:40,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,371 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:41:40,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:41:40,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:41:40,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:41:40,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (1/1) ... [2024-11-28 03:41:40,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:41:40,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:40,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:41:40,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:41:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:41:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:41:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:41:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:41:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:41:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:41:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:41:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:41:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:41:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:41:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:41:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:41:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:41:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:41:40,487 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:41:40,613 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:41:40,615 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:41:41,035 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:41:41,035 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:41:41,317 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:41:41,317 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 03:41:41,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:41:41 BoogieIcfgContainer [2024-11-28 03:41:41,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:41:41,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:41:41,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:41:41,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:41:41,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:41:39" (1/3) ... [2024-11-28 03:41:41,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66df16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:41:41, skipping insertion in model container [2024-11-28 03:41:41,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:40" (2/3) ... [2024-11-28 03:41:41,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66df16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:41:41, skipping insertion in model container [2024-11-28 03:41:41,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:41:41" (3/3) ... [2024-11-28 03:41:41,332 INFO L128 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2024-11-28 03:41:41,352 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:41:41,354 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array-eq-symm.wvr.c that has 3 procedures, 37 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2024-11-28 03:41:41,354 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:41:41,437 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:41:41,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2024-11-28 03:41:41,538 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-28 03:41:41,541 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:41:41,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-28 03:41:41,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2024-11-28 03:41:41,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2024-11-28 03:41:41,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:41:41,578 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;@5daa7a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:41:41,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-28 03:41:41,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:41:41,584 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 03:41:41,584 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:41:41,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:41,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:41:41,586 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:41,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash 462177, now seen corresponding path program 1 times [2024-11-28 03:41:41,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:41,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906379739] [2024-11-28 03:41:41,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:41,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:42,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:42,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906379739] [2024-11-28 03:41:42,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906379739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:42,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:42,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:41:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395971834] [2024-11-28 03:41:42,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:42,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:42,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:42,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:42,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:42,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-28 03:41:42,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:42,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:42,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-28 03:41:42,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:42,460 INFO L124 PetriNetUnfolderBase]: 172/339 cut-off events. [2024-11-28 03:41:42,463 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 03:41:42,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 339 events. 172/339 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1481 event pairs, 92 based on Foata normal form. 2/236 useless extension candidates. Maximal degree in co-relation 554. Up to 267 conditions per place. [2024-11-28 03:41:42,473 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 27 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-11-28 03:41:42,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 165 flow [2024-11-28 03:41:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:41:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-28 03:41:42,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-28 03:41:42,499 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 4 states and 86 transitions. [2024-11-28 03:41:42,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 165 flow [2024-11-28 03:41:42,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:41:42,512 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 140 flow [2024-11-28 03:41:42,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2024-11-28 03:41:42,525 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-11-28 03:41:42,526 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 140 flow [2024-11-28 03:41:42,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:42,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:42,527 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 03:41:42,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:41:42,528 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:42,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:42,529 INFO L85 PathProgramCache]: Analyzing trace with hash 884248388, now seen corresponding path program 1 times [2024-11-28 03:41:42,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:42,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495571500] [2024-11-28 03:41:42,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:42,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:42,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495571500] [2024-11-28 03:41:42,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495571500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41339658] [2024-11-28 03:41:42,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:42,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:42,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:42,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:41:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:42,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:41:42,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:43,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:41:43,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41339658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:43,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:41:43,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:41:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464032402] [2024-11-28 03:41:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:43,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:41:43,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:43,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:41:43,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:41:43,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-28 03:41:43,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:43,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:43,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-28 03:41:43,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:43,404 INFO L124 PetriNetUnfolderBase]: 172/337 cut-off events. [2024-11-28 03:41:43,404 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-28 03:41:43,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 337 events. 172/337 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1480 event pairs, 92 based on Foata normal form. 2/237 useless extension candidates. Maximal degree in co-relation 596. Up to 257 conditions per place. [2024-11-28 03:41:43,408 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 20 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2024-11-28 03:41:43,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 196 flow [2024-11-28 03:41:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:41:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:41:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-28 03:41:43,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-11-28 03:41:43,411 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 140 flow. Second operand 6 states and 106 transitions. [2024-11-28 03:41:43,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 196 flow [2024-11-28 03:41:43,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:41:43,417 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 156 flow [2024-11-28 03:41:43,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-11-28 03:41:43,420 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-11-28 03:41:43,420 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 156 flow [2024-11-28 03:41:43,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:43,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:43,420 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 03:41:43,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:41:43,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:43,621 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:43,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:43,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1641896690, now seen corresponding path program 1 times [2024-11-28 03:41:43,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:43,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736568254] [2024-11-28 03:41:43,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:43,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:43,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736568254] [2024-11-28 03:41:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736568254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347998831] [2024-11-28 03:41:43,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:43,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:43,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:43,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:43,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:41:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:43,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:41:43,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:43,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:43,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347998831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:43,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:43,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 03:41:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951510493] [2024-11-28 03:41:43,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:43,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:41:43,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:43,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:41:43,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:41:44,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-28 03:41:44,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:44,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:44,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-28 03:41:44,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:44,353 INFO L124 PetriNetUnfolderBase]: 178/361 cut-off events. [2024-11-28 03:41:44,353 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-28 03:41:44,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 361 events. 178/361 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1630 event pairs, 92 based on Foata normal form. 6/264 useless extension candidates. Maximal degree in co-relation 598. Up to 268 conditions per place. [2024-11-28 03:41:44,357 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 25 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2024-11-28 03:41:44,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 370 flow [2024-11-28 03:41:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:41:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:41:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-11-28 03:41:44,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-11-28 03:41:44,360 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 156 flow. Second operand 10 states and 176 transitions. [2024-11-28 03:41:44,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 370 flow [2024-11-28 03:41:44,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 312 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-28 03:41:44,365 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 296 flow [2024-11-28 03:41:44,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2024-11-28 03:41:44,368 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-28 03:41:44,368 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 296 flow [2024-11-28 03:41:44,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:44,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:44,369 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:44,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:41:44,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:44,573 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:44,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1014834906, now seen corresponding path program 1 times [2024-11-28 03:41:44,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:44,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715161184] [2024-11-28 03:41:44,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:44,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:44,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715161184] [2024-11-28 03:41:44,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715161184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:44,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:44,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:41:44,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510071293] [2024-11-28 03:41:44,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:44,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:44,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:44,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:44,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:44,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-28 03:41:44,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:44,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:44,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-28 03:41:44,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:44,858 INFO L124 PetriNetUnfolderBase]: 202/382 cut-off events. [2024-11-28 03:41:44,858 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-28 03:41:44,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 382 events. 202/382 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1645 event pairs, 75 based on Foata normal form. 14/285 useless extension candidates. Maximal degree in co-relation 745. Up to 248 conditions per place. [2024-11-28 03:41:44,862 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 55 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-28 03:41:44,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 430 flow [2024-11-28 03:41:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:41:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-28 03:41:44,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-28 03:41:44,864 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 296 flow. Second operand 4 states and 91 transitions. [2024-11-28 03:41:44,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 430 flow [2024-11-28 03:41:44,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 406 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 03:41:44,870 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 276 flow [2024-11-28 03:41:44,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2024-11-28 03:41:44,871 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-28 03:41:44,871 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 276 flow [2024-11-28 03:41:44,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:44,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:44,871 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:44,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:41:44,872 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:44,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1395111494, now seen corresponding path program 1 times [2024-11-28 03:41:44,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:44,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919923314] [2024-11-28 03:41:44,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:44,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:44,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:44,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919923314] [2024-11-28 03:41:44,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919923314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:44,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:44,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:41:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863026423] [2024-11-28 03:41:44,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:44,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:44,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:44,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:44,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-28 03:41:44,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:44,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:44,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-28 03:41:44,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:45,189 INFO L124 PetriNetUnfolderBase]: 308/559 cut-off events. [2024-11-28 03:41:45,189 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-28 03:41:45,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 559 events. 308/559 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2505 event pairs, 58 based on Foata normal form. 14/463 useless extension candidates. Maximal degree in co-relation 1145. Up to 271 conditions per place. [2024-11-28 03:41:45,194 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 71 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-11-28 03:41:45,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 84 transitions, 483 flow [2024-11-28 03:41:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:41:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-28 03:41:45,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-11-28 03:41:45,196 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 276 flow. Second operand 4 states and 107 transitions. [2024-11-28 03:41:45,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 84 transitions, 483 flow [2024-11-28 03:41:45,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 473 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:41:45,202 INFO L231 Difference]: Finished difference. Result has 54 places, 61 transitions, 290 flow [2024-11-28 03:41:45,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=54, PETRI_TRANSITIONS=61} [2024-11-28 03:41:45,203 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2024-11-28 03:41:45,203 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 61 transitions, 290 flow [2024-11-28 03:41:45,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:45,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:45,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:45,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:41:45,204 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:45,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash 31175257, now seen corresponding path program 1 times [2024-11-28 03:41:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:45,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715439558] [2024-11-28 03:41:45,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:45,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715439558] [2024-11-28 03:41:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715439558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:45,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:45,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:41:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295196302] [2024-11-28 03:41:45,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:45,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:45,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:45,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:45,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-28 03:41:45,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:45,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:45,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-28 03:41:45,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:45,668 INFO L124 PetriNetUnfolderBase]: 511/904 cut-off events. [2024-11-28 03:41:45,669 INFO L125 PetriNetUnfolderBase]: For 213/227 co-relation queries the response was YES. [2024-11-28 03:41:45,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 904 events. 511/904 cut-off events. For 213/227 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4222 event pairs, 117 based on Foata normal form. 22/758 useless extension candidates. Maximal degree in co-relation 1923. Up to 451 conditions per place. [2024-11-28 03:41:45,677 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 75 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-28 03:41:45,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 522 flow [2024-11-28 03:41:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:41:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-28 03:41:45,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-28 03:41:45,681 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 290 flow. Second operand 4 states and 106 transitions. [2024-11-28 03:41:45,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 522 flow [2024-11-28 03:41:45,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:41:45,689 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 310 flow [2024-11-28 03:41:45,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2024-11-28 03:41:45,690 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2024-11-28 03:41:45,690 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 310 flow [2024-11-28 03:41:45,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:45,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:45,691 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:45,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:41:45,691 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:45,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1897193866, now seen corresponding path program 1 times [2024-11-28 03:41:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472942932] [2024-11-28 03:41:45,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:41:45,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:45,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472942932] [2024-11-28 03:41:45,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472942932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:45,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:45,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:45,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412732871] [2024-11-28 03:41:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:45,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:45,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:45,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:45,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-28 03:41:45,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:45,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:45,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-28 03:41:45,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:46,217 INFO L124 PetriNetUnfolderBase]: 542/1071 cut-off events. [2024-11-28 03:41:46,218 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-11-28 03:41:46,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2470 conditions, 1071 events. 542/1071 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5596 event pairs, 375 based on Foata normal form. 0/960 useless extension candidates. Maximal degree in co-relation 2373. Up to 698 conditions per place. [2024-11-28 03:41:46,229 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 74 selfloop transitions, 5 changer transitions 3/93 dead transitions. [2024-11-28 03:41:46,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 612 flow [2024-11-28 03:41:46,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:41:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-28 03:41:46,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6047619047619047 [2024-11-28 03:41:46,231 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 310 flow. Second operand 5 states and 127 transitions. [2024-11-28 03:41:46,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 612 flow [2024-11-28 03:41:46,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:41:46,238 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 341 flow [2024-11-28 03:41:46,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-11-28 03:41:46,241 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2024-11-28 03:41:46,242 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 341 flow [2024-11-28 03:41:46,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:46,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:46,243 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:46,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:41:46,243 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:46,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1853811093, now seen corresponding path program 1 times [2024-11-28 03:41:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:46,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647629990] [2024-11-28 03:41:46,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:46,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:41:46,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647629990] [2024-11-28 03:41:46,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647629990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:46,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:46,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:46,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200351627] [2024-11-28 03:41:46,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:46,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:46,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:46,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:46,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-28 03:41:46,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:46,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:46,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-28 03:41:46,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:46,719 INFO L124 PetriNetUnfolderBase]: 465/918 cut-off events. [2024-11-28 03:41:46,719 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-11-28 03:41:46,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 918 events. 465/918 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4568 event pairs, 319 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 2069. Up to 698 conditions per place. [2024-11-28 03:41:46,730 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 58 selfloop transitions, 4 changer transitions 14/87 dead transitions. [2024-11-28 03:41:46,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 596 flow [2024-11-28 03:41:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:41:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-28 03:41:46,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-28 03:41:46,733 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 341 flow. Second operand 5 states and 123 transitions. [2024-11-28 03:41:46,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 596 flow [2024-11-28 03:41:46,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 87 transitions, 592 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 03:41:46,744 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 339 flow [2024-11-28 03:41:46,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-11-28 03:41:46,745 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-28 03:41:46,745 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 339 flow [2024-11-28 03:41:46,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:46,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:46,745 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 03:41:46,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:41:46,746 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:46,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:46,747 INFO L85 PathProgramCache]: Analyzing trace with hash 379985461, now seen corresponding path program 2 times [2024-11-28 03:41:46,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:46,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217600323] [2024-11-28 03:41:46,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:46,770 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:41:46,770 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:41:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217600323] [2024-11-28 03:41:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217600323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349643212] [2024-11-28 03:41:46,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:46,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:46,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:46,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:41:46,951 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:41:46,951 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:46,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:41:46,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:41:47,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:41:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349643212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:47,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:47,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 03:41:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083576445] [2024-11-28 03:41:47,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:47,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:47,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:47,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:47,084 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-28 03:41:47,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:47,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:47,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-28 03:41:47,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:47,356 INFO L124 PetriNetUnfolderBase]: 464/919 cut-off events. [2024-11-28 03:41:47,356 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2024-11-28 03:41:47,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2210 conditions, 919 events. 464/919 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4644 event pairs, 319 based on Foata normal form. 1/906 useless extension candidates. Maximal degree in co-relation 2113. Up to 755 conditions per place. [2024-11-28 03:41:47,367 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 38 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2024-11-28 03:41:47,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 437 flow [2024-11-28 03:41:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:41:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-28 03:41:47,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-28 03:41:47,371 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 339 flow. Second operand 4 states and 74 transitions. [2024-11-28 03:41:47,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 437 flow [2024-11-28 03:41:47,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 421 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:41:47,377 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 345 flow [2024-11-28 03:41:47,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-28 03:41:47,378 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-11-28 03:41:47,378 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 345 flow [2024-11-28 03:41:47,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:47,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:47,379 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:47,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:41:47,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:47,580 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:47,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1235246163, now seen corresponding path program 1 times [2024-11-28 03:41:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:47,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040931123] [2024-11-28 03:41:47,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:47,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:41:47,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040931123] [2024-11-28 03:41:47,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040931123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:47,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841587549] [2024-11-28 03:41:47,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:47,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:41:47,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:47,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:41:47,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:47,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-28 03:41:47,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:47,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:47,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-28 03:41:47,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:48,165 INFO L124 PetriNetUnfolderBase]: 562/1090 cut-off events. [2024-11-28 03:41:48,165 INFO L125 PetriNetUnfolderBase]: For 445/467 co-relation queries the response was YES. [2024-11-28 03:41:48,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 1090 events. 562/1090 cut-off events. For 445/467 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5613 event pairs, 238 based on Foata normal form. 21/1103 useless extension candidates. Maximal degree in co-relation 2513. Up to 399 conditions per place. [2024-11-28 03:41:48,180 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 71 selfloop transitions, 10 changer transitions 3/94 dead transitions. [2024-11-28 03:41:48,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 608 flow [2024-11-28 03:41:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:41:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-28 03:41:48,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-11-28 03:41:48,183 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 345 flow. Second operand 5 states and 137 transitions. [2024-11-28 03:41:48,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 608 flow [2024-11-28 03:41:48,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 576 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:41:48,190 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 336 flow [2024-11-28 03:41:48,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-11-28 03:41:48,191 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-28 03:41:48,191 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 336 flow [2024-11-28 03:41:48,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:48,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:48,192 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:48,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:41:48,192 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:48,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -762549294, now seen corresponding path program 1 times [2024-11-28 03:41:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:48,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307800417] [2024-11-28 03:41:48,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:48,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:41:48,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:48,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307800417] [2024-11-28 03:41:48,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307800417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:48,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:48,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:48,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641880230] [2024-11-28 03:41:48,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:48,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:41:48,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:48,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:41:48,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:48,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-28 03:41:48,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 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) [2024-11-28 03:41:48,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:48,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-28 03:41:48,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:48,647 INFO L124 PetriNetUnfolderBase]: 485/959 cut-off events. [2024-11-28 03:41:48,647 INFO L125 PetriNetUnfolderBase]: For 507/517 co-relation queries the response was YES. [2024-11-28 03:41:48,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2364 conditions, 959 events. 485/959 cut-off events. For 507/517 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4763 event pairs, 191 based on Foata normal form. 5/959 useless extension candidates. Maximal degree in co-relation 2268. Up to 421 conditions per place. [2024-11-28 03:41:48,656 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 57 selfloop transitions, 9 changer transitions 10/86 dead transitions. [2024-11-28 03:41:48,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 557 flow [2024-11-28 03:41:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:41:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-28 03:41:48,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-28 03:41:48,659 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 336 flow. Second operand 5 states and 131 transitions. [2024-11-28 03:41:48,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 557 flow [2024-11-28 03:41:48,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:41:48,666 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 336 flow [2024-11-28 03:41:48,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-11-28 03:41:48,667 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2024-11-28 03:41:48,668 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 336 flow [2024-11-28 03:41:48,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 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) [2024-11-28 03:41:48,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:48,668 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-28 03:41:48,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:41:48,669 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:48,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1191239476, now seen corresponding path program 1 times [2024-11-28 03:41:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:48,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106318062] [2024-11-28 03:41:48,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:48,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106318062] [2024-11-28 03:41:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106318062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531706369] [2024-11-28 03:41:49,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:49,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:49,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:49,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:49,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:41:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:49,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:41:49,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:49,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531706369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:49,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:49,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-28 03:41:49,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072614861] [2024-11-28 03:41:49,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:49,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:41:49,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:49,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:41:49,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:41:49,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-28 03:41:49,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 336 flow. Second operand has 24 states, 24 states have (on average 13.083333333333334) internal successors, (314), 24 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:49,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:49,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-28 03:41:49,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:50,307 INFO L124 PetriNetUnfolderBase]: 481/994 cut-off events. [2024-11-28 03:41:50,308 INFO L125 PetriNetUnfolderBase]: For 816/816 co-relation queries the response was YES. [2024-11-28 03:41:50,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2573 conditions, 994 events. 481/994 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5030 event pairs, 319 based on Foata normal form. 12/981 useless extension candidates. Maximal degree in co-relation 2227. Up to 750 conditions per place. [2024-11-28 03:41:50,315 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 28 selfloop transitions, 61 changer transitions 0/98 dead transitions. [2024-11-28 03:41:50,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 98 transitions, 760 flow [2024-11-28 03:41:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:41:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 03:41:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 354 transitions. [2024-11-28 03:41:50,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-11-28 03:41:50,319 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 336 flow. Second operand 22 states and 354 transitions. [2024-11-28 03:41:50,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 98 transitions, 760 flow [2024-11-28 03:41:50,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 726 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-28 03:41:50,326 INFO L231 Difference]: Finished difference. Result has 90 places, 98 transitions, 716 flow [2024-11-28 03:41:50,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=716, PETRI_PLACES=90, PETRI_TRANSITIONS=98} [2024-11-28 03:41:50,328 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2024-11-28 03:41:50,328 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 98 transitions, 716 flow [2024-11-28 03:41:50,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.083333333333334) internal successors, (314), 24 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:50,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:50,329 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:50,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:41:50,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:50,533 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:50,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash 688018947, now seen corresponding path program 1 times [2024-11-28 03:41:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:50,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079429921] [2024-11-28 03:41:50,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:50,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:41:50,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079429921] [2024-11-28 03:41:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079429921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968675822] [2024-11-28 03:41:50,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:50,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:50,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:50,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:50,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:41:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:50,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:41:50,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:41:51,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:41:51,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968675822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:51,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:51,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-28 03:41:51,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886208279] [2024-11-28 03:41:51,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:51,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:41:51,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:51,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:41:51,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:41:51,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-28 03:41:51,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 98 transitions, 716 flow. Second operand has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 21 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:51,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:51,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-28 03:41:51,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:53,285 INFO L124 PetriNetUnfolderBase]: 1484/2792 cut-off events. [2024-11-28 03:41:53,285 INFO L125 PetriNetUnfolderBase]: For 1583/1649 co-relation queries the response was YES. [2024-11-28 03:41:53,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6908 conditions, 2792 events. 1484/2792 cut-off events. For 1583/1649 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17308 event pairs, 506 based on Foata normal form. 66/2829 useless extension candidates. Maximal degree in co-relation 6734. Up to 415 conditions per place. [2024-11-28 03:41:53,320 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 196 selfloop transitions, 70 changer transitions 55/329 dead transitions. [2024-11-28 03:41:53,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 329 transitions, 2467 flow [2024-11-28 03:41:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:41:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-28 03:41:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 486 transitions. [2024-11-28 03:41:53,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.413265306122449 [2024-11-28 03:41:53,328 INFO L175 Difference]: Start difference. First operand has 90 places, 98 transitions, 716 flow. Second operand 28 states and 486 transitions. [2024-11-28 03:41:53,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 329 transitions, 2467 flow [2024-11-28 03:41:53,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 329 transitions, 2161 flow, removed 101 selfloop flow, removed 9 redundant places. [2024-11-28 03:41:53,349 INFO L231 Difference]: Finished difference. Result has 114 places, 129 transitions, 1037 flow [2024-11-28 03:41:53,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1037, PETRI_PLACES=114, PETRI_TRANSITIONS=129} [2024-11-28 03:41:53,350 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 75 predicate places. [2024-11-28 03:41:53,351 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 129 transitions, 1037 flow [2024-11-28 03:41:53,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 21 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:53,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:53,351 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:53,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:41:53,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:41:53,552 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:53,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:53,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1270873028, now seen corresponding path program 1 times [2024-11-28 03:41:53,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:53,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912283523] [2024-11-28 03:41:53,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:53,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:41:53,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912283523] [2024-11-28 03:41:53,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912283523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060580599] [2024-11-28 03:41:53,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:53,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:53,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:53,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:53,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:41:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:53,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:41:53,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:41:54,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:41:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060580599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:54,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-28 03:41:54,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523536431] [2024-11-28 03:41:54,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:54,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:41:54,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:54,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:41:54,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:41:54,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-28 03:41:54,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 129 transitions, 1037 flow. Second operand has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:54,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:54,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-28 03:41:54,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:55,523 INFO L124 PetriNetUnfolderBase]: 1312/2465 cut-off events. [2024-11-28 03:41:55,523 INFO L125 PetriNetUnfolderBase]: For 3024/3036 co-relation queries the response was YES. [2024-11-28 03:41:55,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6654 conditions, 2465 events. 1312/2465 cut-off events. For 3024/3036 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14884 event pairs, 418 based on Foata normal form. 76/2479 useless extension candidates. Maximal degree in co-relation 6472. Up to 604 conditions per place. [2024-11-28 03:41:55,547 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 72 selfloop transitions, 83 changer transitions 43/205 dead transitions. [2024-11-28 03:41:55,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 205 transitions, 1772 flow [2024-11-28 03:41:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:41:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:41:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 228 transitions. [2024-11-28 03:41:55,550 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-11-28 03:41:55,550 INFO L175 Difference]: Start difference. First operand has 114 places, 129 transitions, 1037 flow. Second operand 13 states and 228 transitions. [2024-11-28 03:41:55,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 205 transitions, 1772 flow [2024-11-28 03:41:55,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 205 transitions, 1719 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-28 03:41:55,568 INFO L231 Difference]: Finished difference. Result has 118 places, 122 transitions, 1106 flow [2024-11-28 03:41:55,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1106, PETRI_PLACES=118, PETRI_TRANSITIONS=122} [2024-11-28 03:41:55,569 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 79 predicate places. [2024-11-28 03:41:55,569 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 122 transitions, 1106 flow [2024-11-28 03:41:55,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:55,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:55,569 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:55,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:41:55,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:41:55,774 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:55,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:55,775 INFO L85 PathProgramCache]: Analyzing trace with hash 129882264, now seen corresponding path program 1 times [2024-11-28 03:41:55,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:55,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718240062] [2024-11-28 03:41:55,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:55,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:41:55,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:55,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718240062] [2024-11-28 03:41:55,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718240062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:55,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971138687] [2024-11-28 03:41:55,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:55,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:55,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:55,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:55,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:41:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:56,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:41:56,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:41:56,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:41:56,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971138687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:56,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:56,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-28 03:41:56,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761572883] [2024-11-28 03:41:56,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:56,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:41:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:56,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:41:56,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:41:56,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-28 03:41:56,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 122 transitions, 1106 flow. Second operand has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:56,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:56,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-28 03:41:56,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:57,576 INFO L124 PetriNetUnfolderBase]: 950/1772 cut-off events. [2024-11-28 03:41:57,576 INFO L125 PetriNetUnfolderBase]: For 2929/2951 co-relation queries the response was YES. [2024-11-28 03:41:57,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 1772 events. 950/1772 cut-off events. For 2929/2951 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9172 event pairs, 232 based on Foata normal form. 40/1806 useless extension candidates. Maximal degree in co-relation 5013. Up to 393 conditions per place. [2024-11-28 03:41:57,645 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 131 selfloop transitions, 53 changer transitions 62/253 dead transitions. [2024-11-28 03:41:57,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 253 transitions, 2301 flow [2024-11-28 03:41:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:41:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:41:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 304 transitions. [2024-11-28 03:41:57,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4257703081232493 [2024-11-28 03:41:57,648 INFO L175 Difference]: Start difference. First operand has 118 places, 122 transitions, 1106 flow. Second operand 17 states and 304 transitions. [2024-11-28 03:41:57,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 253 transitions, 2301 flow [2024-11-28 03:41:57,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 253 transitions, 2220 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-11-28 03:41:57,666 INFO L231 Difference]: Finished difference. Result has 118 places, 122 transitions, 1178 flow [2024-11-28 03:41:57,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1178, PETRI_PLACES=118, PETRI_TRANSITIONS=122} [2024-11-28 03:41:57,667 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 79 predicate places. [2024-11-28 03:41:57,667 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 122 transitions, 1178 flow [2024-11-28 03:41:57,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:57,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:57,668 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:57,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:41:57,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:41:57,869 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:57,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:57,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2014613206, now seen corresponding path program 2 times [2024-11-28 03:41:57,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:57,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592928384] [2024-11-28 03:41:57,870 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:57,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:57,895 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:41:57,896 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:41:57,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:57,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592928384] [2024-11-28 03:41:57,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592928384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:57,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100041455] [2024-11-28 03:41:57,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:57,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:57,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:57,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:57,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:41:58,038 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:41:58,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:58,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:41:58,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:41:58,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:41:58,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100041455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:58,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:58,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 03:41:58,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462300212] [2024-11-28 03:41:58,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:58,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:41:58,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:58,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:41:58,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:41:58,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-28 03:41:58,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 122 transitions, 1178 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:58,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:58,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-28 03:41:58,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:58,446 INFO L124 PetriNetUnfolderBase]: 842/1619 cut-off events. [2024-11-28 03:41:58,446 INFO L125 PetriNetUnfolderBase]: For 2359/2373 co-relation queries the response was YES. [2024-11-28 03:41:58,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4708 conditions, 1619 events. 842/1619 cut-off events. For 2359/2373 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8387 event pairs, 376 based on Foata normal form. 0/1600 useless extension candidates. Maximal degree in co-relation 4508. Up to 943 conditions per place. [2024-11-28 03:41:58,458 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 128 selfloop transitions, 6 changer transitions 9/151 dead transitions. [2024-11-28 03:41:58,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 151 transitions, 1605 flow [2024-11-28 03:41:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:41:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-28 03:41:58,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-11-28 03:41:58,459 INFO L175 Difference]: Start difference. First operand has 118 places, 122 transitions, 1178 flow. Second operand 5 states and 117 transitions. [2024-11-28 03:41:58,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 151 transitions, 1605 flow [2024-11-28 03:41:58,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 151 transitions, 1525 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-11-28 03:41:58,472 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 1125 flow [2024-11-28 03:41:58,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1125, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-11-28 03:41:58,473 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2024-11-28 03:41:58,473 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 1125 flow [2024-11-28 03:41:58,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:58,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:58,473 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:58,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:41:58,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:41:58,674 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:58,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:58,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1826394329, now seen corresponding path program 2 times [2024-11-28 03:41:58,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:58,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351462524] [2024-11-28 03:41:58,675 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:58,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:58,702 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:41:58,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:41:58,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:58,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351462524] [2024-11-28 03:41:58,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351462524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:58,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401567131] [2024-11-28 03:41:58,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:58,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:58,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:58,758 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:58,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:41:58,846 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:41:58,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:58,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:41:58,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:41:58,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:41:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401567131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:58,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:58,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 03:41:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375538565] [2024-11-28 03:41:58,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:58,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:41:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:58,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:41:58,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:41:58,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-28 03:41:58,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 1125 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 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) [2024-11-28 03:41:58,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:58,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-28 03:41:58,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:59,195 INFO L124 PetriNetUnfolderBase]: 464/1014 cut-off events. [2024-11-28 03:41:59,196 INFO L125 PetriNetUnfolderBase]: For 2099/2099 co-relation queries the response was YES. [2024-11-28 03:41:59,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3262 conditions, 1014 events. 464/1014 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4977 event pairs, 170 based on Foata normal form. 27/1030 useless extension candidates. Maximal degree in co-relation 3067. Up to 494 conditions per place. [2024-11-28 03:41:59,204 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 80 selfloop transitions, 1 changer transitions 57/141 dead transitions. [2024-11-28 03:41:59,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 141 transitions, 1503 flow [2024-11-28 03:41:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:41:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-28 03:41:59,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2024-11-28 03:41:59,206 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 1125 flow. Second operand 5 states and 109 transitions. [2024-11-28 03:41:59,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 141 transitions, 1503 flow [2024-11-28 03:41:59,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 141 transitions, 1470 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 03:41:59,218 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 956 flow [2024-11-28 03:41:59,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=956, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2024-11-28 03:41:59,218 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2024-11-28 03:41:59,218 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 956 flow [2024-11-28 03:41:59,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 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) [2024-11-28 03:41:59,219 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:59,219 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2024-11-28 03:41:59,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:41:59,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:41:59,419 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-28 03:41:59,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1294482100, now seen corresponding path program 2 times [2024-11-28 03:41:59,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:59,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759119607] [2024-11-28 03:41:59,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:59,437 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:41:59,438 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:41:59,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759119607] [2024-11-28 03:41:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759119607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95529582] [2024-11-28 03:41:59,484 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:59,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:59,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:59,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:59,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:41:59,569 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:41:59,569 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:59,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:41:59,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:41:59,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:41:59,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95529582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:59,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:59,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 03:41:59,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542209338] [2024-11-28 03:41:59,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:59,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:41:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:59,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:41:59,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:59,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-28 03:41:59,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 956 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:59,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:59,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-28 03:41:59,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:59,741 INFO L124 PetriNetUnfolderBase]: 12/144 cut-off events. [2024-11-28 03:41:59,741 INFO L125 PetriNetUnfolderBase]: For 708/708 co-relation queries the response was YES. [2024-11-28 03:41:59,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 144 events. 12/144 cut-off events. For 708/708 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 360 event pairs, 0 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 708. Up to 56 conditions per place. [2024-11-28 03:41:59,742 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2024-11-28 03:41:59,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 1096 flow [2024-11-28 03:41:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:41:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-28 03:41:59,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3273809523809524 [2024-11-28 03:41:59,743 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 956 flow. Second operand 4 states and 55 transitions. [2024-11-28 03:41:59,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 1096 flow [2024-11-28 03:41:59,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 982 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-11-28 03:41:59,750 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2024-11-28 03:41:59,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2024-11-28 03:41:59,750 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2024-11-28 03:41:59,750 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2024-11-28 03:41:59,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:59,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-11-28 03:41:59,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-11-28 03:41:59,754 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-28 03:41:59,755 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-28 03:41:59,755 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-28 03:41:59,755 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-28 03:41:59,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:41:59,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:41:59,959 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:59,963 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 03:41:59,963 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:41:59,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:41:59 BasicIcfg [2024-11-28 03:41:59,968 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:41:59,969 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:41:59,969 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:41:59,969 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:41:59,969 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:41:41" (3/4) ... [2024-11-28 03:41:59,971 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:41:59,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-28 03:41:59,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-28 03:41:59,982 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2024-11-28 03:41:59,983 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-28 03:41:59,983 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-28 03:41:59,983 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 03:42:00,072 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:42:00,073 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:42:00,073 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:42:00,074 INFO L158 Benchmark]: Toolchain (without parser) took 20184.43ms. Allocated memory was 167.8MB in the beginning and 503.3MB in the end (delta: 335.5MB). Free memory was 130.4MB in the beginning and 219.4MB in the end (delta: -89.0MB). Peak memory consumption was 240.4MB. Max. memory is 16.1GB. [2024-11-28 03:42:00,074 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:42:00,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.06ms. Allocated memory is still 167.8MB. Free memory was 130.4MB in the beginning and 118.8MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:42:00,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.19ms. Allocated memory is still 167.8MB. Free memory was 118.8MB in the beginning and 117.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:42:00,075 INFO L158 Benchmark]: Boogie Preprocessor took 56.17ms. Allocated memory is still 167.8MB. Free memory was 117.3MB in the beginning and 115.2MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:42:00,075 INFO L158 Benchmark]: RCFGBuilder took 933.56ms. Allocated memory is still 167.8MB. Free memory was 115.2MB in the beginning and 75.6MB in the end (delta: 39.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 03:42:00,076 INFO L158 Benchmark]: TraceAbstraction took 18646.64ms. Allocated memory was 167.8MB in the beginning and 503.3MB in the end (delta: 335.5MB). Free memory was 75.3MB in the beginning and 223.6MB in the end (delta: -148.2MB). Peak memory consumption was 190.1MB. Max. memory is 16.1GB. [2024-11-28 03:42:00,076 INFO L158 Benchmark]: Witness Printer took 104.57ms. Allocated memory is still 503.3MB. Free memory was 223.6MB in the beginning and 219.4MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:42:00,078 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.06ms. Allocated memory is still 167.8MB. Free memory was 130.4MB in the beginning and 118.8MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.19ms. Allocated memory is still 167.8MB. Free memory was 118.8MB in the beginning and 117.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.17ms. Allocated memory is still 167.8MB. Free memory was 117.3MB in the beginning and 115.2MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 933.56ms. Allocated memory is still 167.8MB. Free memory was 115.2MB in the beginning and 75.6MB in the end (delta: 39.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18646.64ms. Allocated memory was 167.8MB in the beginning and 503.3MB in the end (delta: 335.5MB). Free memory was 75.3MB in the beginning and 223.6MB in the end (delta: -148.2MB). Peak memory consumption was 190.1MB. Max. memory is 16.1GB. * Witness Printer took 104.57ms. Allocated memory is still 503.3MB. Free memory was 223.6MB in the beginning and 219.4MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.5s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1571 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1489 mSDsluCounter, 1295 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1217 mSDsCounter, 142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3856 IncrementalHoareTripleChecker+Invalid, 3998 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 142 mSolverCounterUnsat, 78 mSDtfsCounter, 3856 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 519 GetRequests, 316 SyntacticMatches, 8 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1178occurred in iteration=15, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 490 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 2334 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1212 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 37 InterpolantComputations, 9 PerfectInterpolantSequences, 649/875 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 03:42:00,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4141fbd8-a653-48d6-bfe0-d3dc4ebed62e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE