./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/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_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/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_1febd9cf-7201-4a09-82c6-a5b591277ea6/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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:24:07,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:24:07,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 23:24:07,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:24:07,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:24:07,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:24:07,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:24:07,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:24:07,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:24:07,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:24:07,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:24:07,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:24:07,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:24:07,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:24:07,419 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:24:07,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:24:07,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:24:07,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:24:07,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:24:07,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:24:07,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:24:07,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:24:07,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:24:07,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:24:07,421 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:24:07,421 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:24:07,421 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:24:07,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:24:07,421 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:24:07,421 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:24:07,422 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:24:07,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:24:07,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:24:07,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:24:07,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:07,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:24:07,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:24:07,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:24:07,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:24:07,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:07,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:24:07,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:24:07,423 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:24:07,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:24:07,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:24:07,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:24:07,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:24:07,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:24:07,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:24:07,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:24:07,424 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_1febd9cf-7201-4a09-82c6-a5b591277ea6/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 -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2024-11-27 23:24:07,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:24:07,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:24:07,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:24:07,741 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:24:07,741 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:24:07,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-27 23:24:10,924 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/data/a56f47304/5c073a96871f485ebdf9b29ef8ecc38f/FLAGcdf62f675 [2024-11-27 23:24:11,428 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:24:11,431 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-27 23:24:11,457 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/data/a56f47304/5c073a96871f485ebdf9b29ef8ecc38f/FLAGcdf62f675 [2024-11-27 23:24:11,486 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/data/a56f47304/5c073a96871f485ebdf9b29ef8ecc38f [2024-11-27 23:24:11,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:24:11,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:24:11,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:24:11,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:24:11,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:24:11,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:24:11" (1/1) ... [2024-11-27 23:24:11,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1833d6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:11, skipping insertion in model container [2024-11-27 23:24:11,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:24:11" (1/1) ... [2024-11-27 23:24:11,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:24:11,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:24:12,023 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:24:12,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:24:12,137 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:24:12,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12 WrapperNode [2024-11-27 23:24:12,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:24:12,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:24:12,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:24:12,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:24:12,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,223 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2024-11-27 23:24:12,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:24:12,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:24:12,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:24:12,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:24:12,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,269 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 5, 2, 6]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 5, 0, 1]. The 3 writes are split as follows [0, 0, 0, 1, 2]. [2024-11-27 23:24:12,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,290 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:24:12,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:24:12,312 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:24:12,312 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:24:12,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (1/1) ... [2024-11-27 23:24:12,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:12,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:24:12,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1febd9cf-7201-4a09-82c6-a5b591277ea6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 23:24:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 23:24:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 23:24:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:24:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:24:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:24:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-27 23:24:12,418 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-27 23:24:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:24:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:24:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:24:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:24:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:24:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:24:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:24:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:24:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:24:12,424 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:24:12,662 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:24:12,664 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:24:13,146 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:24:13,146 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:24:13,958 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:24:13,959 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-27 23:24:13,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:24:13 BoogieIcfgContainer [2024-11-27 23:24:13,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:24:13,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:24:13,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:24:13,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:24:13,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:24:11" (1/3) ... [2024-11-27 23:24:13,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35582ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:24:13, skipping insertion in model container [2024-11-27 23:24:13,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:12" (2/3) ... [2024-11-27 23:24:13,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35582ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:24:13, skipping insertion in model container [2024-11-27 23:24:13,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:24:13" (3/3) ... [2024-11-27 23:24:13,976 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2024-11-27 23:24:13,995 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:24:13,997 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_12-ptr_racefree.i that has 2 procedures, 51 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2024-11-27 23:24:13,997 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:24:14,071 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-27 23:24:14,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 60 transitions, 127 flow [2024-11-27 23:24:14,189 INFO L124 PetriNetUnfolderBase]: 11/75 cut-off events. [2024-11-27 23:24:14,191 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:24:14,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 11/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 223 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-11-27 23:24:14,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 60 transitions, 127 flow [2024-11-27 23:24:14,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 125 flow [2024-11-27 23:24:14,219 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:24:14,241 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;@1b8751c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:24:14,243 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-27 23:24:14,257 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:24:14,258 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-27 23:24:14,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:24:14,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:14,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 23:24:14,260 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-27 23:24:14,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:14,268 INFO L85 PathProgramCache]: Analyzing trace with hash 454908801, now seen corresponding path program 1 times [2024-11-27 23:24:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:14,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435527903] [2024-11-27 23:24:14,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:14,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:14,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435527903] [2024-11-27 23:24:14,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435527903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:14,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:14,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:24:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168439619] [2024-11-27 23:24:14,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:14,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:14,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:14,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:14,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:14,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-27 23:24:14,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:14,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:14,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-27 23:24:14,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:15,167 INFO L124 PetriNetUnfolderBase]: 144/390 cut-off events. [2024-11-27 23:24:15,171 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:24:15,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 390 events. 144/390 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1830 event pairs, 20 based on Foata normal form. 78/439 useless extension candidates. Maximal degree in co-relation 683. Up to 277 conditions per place. [2024-11-27 23:24:15,178 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 49 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-11-27 23:24:15,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 259 flow [2024-11-27 23:24:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:24:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-27 23:24:15,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-11-27 23:24:15,205 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 125 flow. Second operand 4 states and 163 transitions. [2024-11-27 23:24:15,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 259 flow [2024-11-27 23:24:15,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:24:15,222 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 115 flow [2024-11-27 23:24:15,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-27 23:24:15,231 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-11-27 23:24:15,234 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 115 flow [2024-11-27 23:24:15,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:15,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:15,235 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:15,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:24:15,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-27 23:24:15,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1566764286, now seen corresponding path program 1 times [2024-11-27 23:24:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:15,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437239597] [2024-11-27 23:24:15,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:24:15,324 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:24:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:24:15,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:24:15,417 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:24:15,422 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-27 23:24:15,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-27 23:24:15,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-27 23:24:15,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-27 23:24:15,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-27 23:24:15,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-27 23:24:15,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-27 23:24:15,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-27 23:24:15,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-27 23:24:15,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-27 23:24:15,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-27 23:24:15,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-27 23:24:15,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-27 23:24:15,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:24:15,433 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-27 23:24:15,437 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:24:15,438 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-27 23:24:15,485 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:24:15,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 93 transitions, 202 flow [2024-11-27 23:24:15,544 INFO L124 PetriNetUnfolderBase]: 21/142 cut-off events. [2024-11-27 23:24:15,544 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-27 23:24:15,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 21/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 524 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-11-27 23:24:15,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 93 transitions, 202 flow [2024-11-27 23:24:15,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 93 transitions, 202 flow [2024-11-27 23:24:15,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:24:15,551 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;@1b8751c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:24:15,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-27 23:24:15,564 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:24:15,564 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-27 23:24:15,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:24:15,565 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:15,565 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 23:24:15,565 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:24:15,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:15,565 INFO L85 PathProgramCache]: Analyzing trace with hash 543688957, now seen corresponding path program 1 times [2024-11-27 23:24:15,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:15,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320941539] [2024-11-27 23:24:15,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:15,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320941539] [2024-11-27 23:24:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320941539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:15,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:15,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:24:15,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889152942] [2024-11-27 23:24:15,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:15,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:15,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:15,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:15,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:15,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-11-27 23:24:15,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:15,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:15,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-11-27 23:24:15,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:17,778 INFO L124 PetriNetUnfolderBase]: 4742/10044 cut-off events. [2024-11-27 23:24:17,778 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-27 23:24:17,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17634 conditions, 10044 events. 4742/10044 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 83449 event pairs, 2232 based on Foata normal form. 1800/10846 useless extension candidates. Maximal degree in co-relation 1308. Up to 7478 conditions per place. [2024-11-27 23:24:17,862 INFO L140 encePairwiseOnDemand]: 73/93 looper letters, 68 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-27 23:24:17,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 370 flow [2024-11-27 23:24:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:24:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-11-27 23:24:17,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-11-27 23:24:17,866 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 202 flow. Second operand 4 states and 240 transitions. [2024-11-27 23:24:17,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 370 flow [2024-11-27 23:24:17,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:24:17,874 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 198 flow [2024-11-27 23:24:17,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-27 23:24:17,876 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-11-27 23:24:17,876 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 198 flow [2024-11-27 23:24:17,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:17,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:17,877 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:17,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:24:17,878 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:24:17,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:17,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1486417909, now seen corresponding path program 1 times [2024-11-27 23:24:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387805598] [2024-11-27 23:24:17,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:17,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:18,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387805598] [2024-11-27 23:24:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387805598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:18,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:18,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:24:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183129455] [2024-11-27 23:24:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:18,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:24:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:18,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:24:18,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:18,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-11-27 23:24:18,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:18,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:18,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-11-27 23:24:18,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:19,864 INFO L124 PetriNetUnfolderBase]: 4430/8575 cut-off events. [2024-11-27 23:24:19,864 INFO L125 PetriNetUnfolderBase]: For 715/715 co-relation queries the response was YES. [2024-11-27 23:24:19,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16429 conditions, 8575 events. 4430/8575 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 66957 event pairs, 299 based on Foata normal form. 169/8178 useless extension candidates. Maximal degree in co-relation 1260. Up to 4698 conditions per place. [2024-11-27 23:24:19,929 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 112 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-11-27 23:24:19,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 153 transitions, 576 flow [2024-11-27 23:24:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:24:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2024-11-27 23:24:19,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.589605734767025 [2024-11-27 23:24:19,937 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 198 flow. Second operand 6 states and 329 transitions. [2024-11-27 23:24:19,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 153 transitions, 576 flow [2024-11-27 23:24:19,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 153 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:24:19,946 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 204 flow [2024-11-27 23:24:19,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-11-27 23:24:19,947 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2024-11-27 23:24:19,947 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 204 flow [2024-11-27 23:24:19,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:19,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:19,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:19,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:24:19,950 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:24:19,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:19,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1167015714, now seen corresponding path program 1 times [2024-11-27 23:24:19,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:19,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581391327] [2024-11-27 23:24:19,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:19,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:20,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581391327] [2024-11-27 23:24:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581391327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:20,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:20,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:20,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133737461] [2024-11-27 23:24:20,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:20,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:24:20,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:20,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:24:20,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:20,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-11-27 23:24:20,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:20,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:20,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-11-27 23:24:20,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:22,537 INFO L124 PetriNetUnfolderBase]: 6470/13422 cut-off events. [2024-11-27 23:24:22,537 INFO L125 PetriNetUnfolderBase]: For 1500/1685 co-relation queries the response was YES. [2024-11-27 23:24:22,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24753 conditions, 13422 events. 6470/13422 cut-off events. For 1500/1685 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 116749 event pairs, 1247 based on Foata normal form. 273/12580 useless extension candidates. Maximal degree in co-relation 23172. Up to 6083 conditions per place. [2024-11-27 23:24:22,750 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 163 selfloop transitions, 17 changer transitions 0/216 dead transitions. [2024-11-27 23:24:22,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 216 transitions, 913 flow [2024-11-27 23:24:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:24:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:24:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 434 transitions. [2024-11-27 23:24:22,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-27 23:24:22,755 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 204 flow. Second operand 7 states and 434 transitions. [2024-11-27 23:24:22,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 216 transitions, 913 flow [2024-11-27 23:24:22,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 216 transitions, 886 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-27 23:24:22,767 INFO L231 Difference]: Finished difference. Result has 98 places, 97 transitions, 324 flow [2024-11-27 23:24:22,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2024-11-27 23:24:22,770 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2024-11-27 23:24:22,770 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 324 flow [2024-11-27 23:24:22,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:22,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:22,770 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-27 23:24:22,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:24:22,771 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:24:22,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1165684487, now seen corresponding path program 1 times [2024-11-27 23:24:22,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:22,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671556375] [2024-11-27 23:24:22,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:22,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:22,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:22,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671556375] [2024-11-27 23:24:22,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671556375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:22,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:22,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940837538] [2024-11-27 23:24:22,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:22,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:22,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:22,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:22,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-11-27 23:24:22,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:22,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:22,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-11-27 23:24:22,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:24,491 INFO L124 PetriNetUnfolderBase]: 6285/12404 cut-off events. [2024-11-27 23:24:24,491 INFO L125 PetriNetUnfolderBase]: For 4934/4934 co-relation queries the response was YES. [2024-11-27 23:24:24,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26464 conditions, 12404 events. 6285/12404 cut-off events. For 4934/4934 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 101688 event pairs, 1916 based on Foata normal form. 177/11906 useless extension candidates. Maximal degree in co-relation 25690. Up to 8674 conditions per place. [2024-11-27 23:24:24,590 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 120 selfloop transitions, 6 changer transitions 0/161 dead transitions. [2024-11-27 23:24:24,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 786 flow [2024-11-27 23:24:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:24:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-27 23:24:24,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-11-27 23:24:24,592 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 324 flow. Second operand 4 states and 232 transitions. [2024-11-27 23:24:24,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 786 flow [2024-11-27 23:24:24,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 782 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 23:24:24,616 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 336 flow [2024-11-27 23:24:24,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-11-27 23:24:24,618 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 18 predicate places. [2024-11-27 23:24:24,618 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 336 flow [2024-11-27 23:24:24,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:24,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:24,618 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-27 23:24:24,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:24:24,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-27 23:24:24,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash 763690214, now seen corresponding path program 1 times [2024-11-27 23:24:24,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:24,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952369054] [2024-11-27 23:24:24,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:24,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:24:24,674 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:24:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:24:24,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:24:24,729 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:24:24,729 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-27 23:24:24,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-27 23:24:24,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-27 23:24:24,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-27 23:24:24,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-27 23:24:24,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-27 23:24:24,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-27 23:24:24,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-27 23:24:24,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:24:24,731 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-27 23:24:24,732 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:24:24,734 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-27 23:24:24,776 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 23:24:24,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 126 transitions, 279 flow [2024-11-27 23:24:24,820 INFO L124 PetriNetUnfolderBase]: 34/228 cut-off events. [2024-11-27 23:24:24,820 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-27 23:24:24,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 34/228 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 950 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2024-11-27 23:24:24,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 126 transitions, 279 flow [2024-11-27 23:24:24,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 126 transitions, 279 flow [2024-11-27 23:24:24,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:24:24,829 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;@1b8751c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:24:24,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-27 23:24:24,834 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:24:24,834 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-27 23:24:24,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:24:24,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:24,835 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 23:24:24,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-27 23:24:24,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:24,836 INFO L85 PathProgramCache]: Analyzing trace with hash 663961178, now seen corresponding path program 1 times [2024-11-27 23:24:24,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:24,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775746007] [2024-11-27 23:24:24,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:24,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:24,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:24,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775746007] [2024-11-27 23:24:24,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775746007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:24,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:24,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:24:24,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36711064] [2024-11-27 23:24:24,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:24,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:24,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:24,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:24,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-11-27 23:24:24,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:24,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:24,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-11-27 23:24:24,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:39,815 INFO L124 PetriNetUnfolderBase]: 97039/174425 cut-off events. [2024-11-27 23:24:39,815 INFO L125 PetriNetUnfolderBase]: For 2062/2062 co-relation queries the response was YES. [2024-11-27 23:24:40,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310077 conditions, 174425 events. 97039/174425 cut-off events. For 2062/2062 co-relation queries the response was YES. Maximal size of possible extension queue 3690. Compared 1830764 event pairs, 63133 based on Foata normal form. 34763/193871 useless extension candidates. Maximal degree in co-relation 18255. Up to 134303 conditions per place. [2024-11-27 23:24:40,987 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 82 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-27 23:24:40,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 463 flow [2024-11-27 23:24:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:24:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2024-11-27 23:24:40,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-27 23:24:40,994 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 279 flow. Second operand 4 states and 312 transitions. [2024-11-27 23:24:40,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 463 flow [2024-11-27 23:24:40,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:24:41,002 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 263 flow [2024-11-27 23:24:41,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-11-27 23:24:41,004 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-11-27 23:24:41,005 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 263 flow [2024-11-27 23:24:41,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:41,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:41,005 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:41,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:24:41,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-27 23:24:41,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash -906903651, now seen corresponding path program 1 times [2024-11-27 23:24:41,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:41,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134302977] [2024-11-27 23:24:41,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:41,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:41,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134302977] [2024-11-27 23:24:41,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134302977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:41,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:41,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:41,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404793212] [2024-11-27 23:24:41,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:41,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:24:41,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:41,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:24:41,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:41,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2024-11-27 23:24:41,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:41,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:41,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2024-11-27 23:24:41,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:25:02,941 INFO L124 PetriNetUnfolderBase]: 147779/252738 cut-off events. [2024-11-27 23:25:02,941 INFO L125 PetriNetUnfolderBase]: For 8857/14439 co-relation queries the response was YES. [2024-11-27 23:25:03,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466459 conditions, 252738 events. 147779/252738 cut-off events. For 8857/14439 co-relation queries the response was YES. Maximal size of possible extension queue 5690. Compared 2647499 event pairs, 40828 based on Foata normal form. 4264/238367 useless extension candidates. Maximal degree in co-relation 466351. Up to 125335 conditions per place.