./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_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_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1 --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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:25:43,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:25:43,957 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 15:25:43,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:25:43,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:25:43,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:25:43,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:25:43,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:25:43,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:25:43,986 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:25:43,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:25:43,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:25:43,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:25:43,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:25:43,987 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:25:43,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:25:43,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:25:43,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:25:43,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:25:43,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:25:43,988 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:25:43,988 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:25:43,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:25:43,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:25:43,989 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:25:43,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:25:43,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:25:43,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:25:43,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:25:43,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:25:43,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:25:43,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:25:43,990 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_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1 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 -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2024-12-02 15:25:44,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:25:44,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:25:44,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:25:44,266 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:25:44,266 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:25:44,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-12-02 15:25:46,939 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/data/1541eef1e/8326d39c95b4454998475150c9f0c2fa/FLAGc4eb8629a [2024-12-02 15:25:47,188 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:25:47,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-12-02 15:25:47,201 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/data/1541eef1e/8326d39c95b4454998475150c9f0c2fa/FLAGc4eb8629a [2024-12-02 15:25:47,217 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/data/1541eef1e/8326d39c95b4454998475150c9f0c2fa [2024-12-02 15:25:47,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:25:47,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:25:47,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:25:47,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:25:47,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:25:47,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3590e7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47, skipping insertion in model container [2024-12-02 15:25:47,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,254 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:25:47,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:25:47,542 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:25:47,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:25:47,615 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:25:47,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47 WrapperNode [2024-12-02 15:25:47,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:25:47,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:25:47,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:25:47,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:25:47,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,652 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 142 [2024-12-02 15:25:47,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:25:47,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:25:47,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:25:47,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:25:47,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,681 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 2, 5, 6]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 0, 5, 1]. The 3 writes are split as follows [0, 0, 1, 0, 2]. [2024-12-02 15:25:47,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,690 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:25:47,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:25:47,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:25:47,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:25:47,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (1/1) ... [2024-12-02 15:25:47,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:25:47,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:25:47,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:25:47,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ead5062-b98b-49c2-8af7-efbb732cdc7f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:25:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:25:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:25:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:25:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:25:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 15:25:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 15:25:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:25:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:25:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:25:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:25:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:25:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 15:25:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 15:25:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:25:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:25:47,761 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 15:25:47,881 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:25:47,882 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:25:48,137 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 15:25:48,137 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:25:48,555 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:25:48,556 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 15:25:48,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:25:48 BoogieIcfgContainer [2024-12-02 15:25:48,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:25:48,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:25:48,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:25:48,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:25:48,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:25:47" (1/3) ... [2024-12-02 15:25:48,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a19985d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:25:48, skipping insertion in model container [2024-12-02 15:25:48,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:47" (2/3) ... [2024-12-02 15:25:48,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a19985d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:25:48, skipping insertion in model container [2024-12-02 15:25:48,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:25:48" (3/3) ... [2024-12-02 15:25:48,564 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-12-02 15:25:48,580 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:25:48,581 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_51-mutexptr_racefree.i that has 2 procedures, 51 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2024-12-02 15:25:48,581 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 15:25:48,626 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 15:25:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 60 transitions, 127 flow [2024-12-02 15:25:48,698 INFO L124 PetriNetUnfolderBase]: 11/75 cut-off events. [2024-12-02 15:25:48,699 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 15:25:48,703 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 9. Compared 222 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. [2024-12-02 15:25:48,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 60 transitions, 127 flow [2024-12-02 15:25:48,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 125 flow [2024-12-02 15:25:48,713 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:25:48,724 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;@7d722689, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:25:48,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-12-02 15:25:48,733 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:25:48,733 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 15:25:48,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:25:48,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:25:48,734 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:25:48,734 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)] === [2024-12-02 15:25:48,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash 466092207, now seen corresponding path program 1 times [2024-12-02 15:25:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274929114] [2024-12-02 15:25:48,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:25:49,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:49,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274929114] [2024-12-02 15:25:49,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274929114] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:25:49,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:25:49,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:25:49,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061209148] [2024-12-02 15:25:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:25:49,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:25:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:49,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:25:49,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:25:49,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-12-02 15:25:49,103 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) [2024-12-02 15:25:49,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:25:49,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-12-02 15:25:49,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:25:49,361 INFO L124 PetriNetUnfolderBase]: 144/390 cut-off events. [2024-12-02 15:25:49,361 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 15:25:49,362 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 1819 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. [2024-12-02 15:25:49,365 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 49 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-12-02 15:25:49,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 259 flow [2024-12-02 15:25:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:25:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 15:25:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-12-02 15:25:49,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-12-02 15:25:49,381 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 125 flow. Second operand 4 states and 163 transitions. [2024-12-02 15:25:49,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 259 flow [2024-12-02 15:25:49,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:25:49,390 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 115 flow [2024-12-02 15:25:49,393 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} [2024-12-02 15:25:49,396 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-12-02 15:25:49,396 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 115 flow [2024-12-02 15:25:49,396 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) [2024-12-02 15:25:49,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:25:49,397 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-12-02 15:25:49,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:25:49,397 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)] === [2024-12-02 15:25:49,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash -275820214, now seen corresponding path program 1 times [2024-12-02 15:25:49,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:49,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197558557] [2024-12-02 15:25:49,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:49,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:25:49,452 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:25:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:25:49,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:25:49,490 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:25:49,492 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-12-02 15:25:49,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-12-02 15:25:49,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-12-02 15:25:49,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-12-02 15:25:49,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-12-02 15:25:49,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-12-02 15:25:49,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-12-02 15:25:49,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-12-02 15:25:49,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-12-02 15:25:49,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-12-02 15:25:49,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-12-02 15:25:49,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-12-02 15:25:49,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-12-02 15:25:49,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:25:49,496 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 15:25:49,498 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:25:49,498 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 15:25:49,530 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 15:25:49,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 93 transitions, 202 flow [2024-12-02 15:25:49,552 INFO L124 PetriNetUnfolderBase]: 21/142 cut-off events. [2024-12-02 15:25:49,552 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 15:25:49,553 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 508 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. [2024-12-02 15:25:49,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 93 transitions, 202 flow [2024-12-02 15:25:49,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 93 transitions, 202 flow [2024-12-02 15:25:49,556 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:25:49,557 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;@7d722689, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:25:49,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-12-02 15:25:49,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:25:49,560 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 15:25:49,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:25:49,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:25:49,560 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:25:49,560 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)] === [2024-12-02 15:25:49,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash 554872363, now seen corresponding path program 1 times [2024-12-02 15:25:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:49,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370415683] [2024-12-02 15:25:49,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:25:49,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:49,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370415683] [2024-12-02 15:25:49,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370415683] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:25:49,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:25:49,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:25:49,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377182712] [2024-12-02 15:25:49,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:25:49,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:25:49,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:49,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:25:49,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:25:49,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-12-02 15:25:49,668 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) [2024-12-02 15:25:49,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:25:49,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-12-02 15:25:49,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:25:51,102 INFO L124 PetriNetUnfolderBase]: 4742/10057 cut-off events. [2024-12-02 15:25:51,103 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-12-02 15:25:51,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17647 conditions, 10057 events. 4742/10057 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 83549 event pairs, 2232 based on Foata normal form. 1787/10846 useless extension candidates. Maximal degree in co-relation 1308. Up to 7478 conditions per place. [2024-12-02 15:25:51,159 INFO L140 encePairwiseOnDemand]: 73/93 looper letters, 68 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-12-02 15:25:51,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 370 flow [2024-12-02 15:25:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:25:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 15:25:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-12-02 15:25:51,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-12-02 15:25:51,161 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 202 flow. Second operand 4 states and 240 transitions. [2024-12-02 15:25:51,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 370 flow [2024-12-02 15:25:51,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:25:51,164 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 198 flow [2024-12-02 15:25:51,165 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} [2024-12-02 15:25:51,165 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-12-02 15:25:51,166 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 198 flow [2024-12-02 15:25:51,166 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) [2024-12-02 15:25:51,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:25:51,166 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:25:51,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:25:51,166 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 15:25:51,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:51,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1496392021, now seen corresponding path program 1 times [2024-12-02 15:25:51,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:51,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017151701] [2024-12-02 15:25:51,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:51,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:25:51,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017151701] [2024-12-02 15:25:51,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017151701] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:25:51,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:25:51,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:25:51,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102666970] [2024-12-02 15:25:51,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:25:51,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:25:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:51,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:25:51,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:25:51,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-12-02 15:25:51,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-12-02 15:25:51,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:25:51,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-12-02 15:25:51,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:25:52,676 INFO L124 PetriNetUnfolderBase]: 6126/12726 cut-off events. [2024-12-02 15:25:52,676 INFO L125 PetriNetUnfolderBase]: For 515/883 co-relation queries the response was YES. [2024-12-02 15:25:52,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23109 conditions, 12726 events. 6126/12726 cut-off events. For 515/883 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 109177 event pairs, 1719 based on Foata normal form. 231/11901 useless extension candidates. Maximal degree in co-relation 23002. Up to 6013 conditions per place. [2024-12-02 15:25:52,748 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 123 selfloop transitions, 12 changer transitions 0/172 dead transitions. [2024-12-02 15:25:52,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 172 transitions, 690 flow [2024-12-02 15:25:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:25:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 15:25:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2024-12-02 15:25:52,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6795698924731183 [2024-12-02 15:25:52,750 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 198 flow. Second operand 5 states and 316 transitions. [2024-12-02 15:25:52,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 172 transitions, 690 flow [2024-12-02 15:25:52,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 172 transitions, 686 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 15:25:52,755 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 290 flow [2024-12-02 15:25:52,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2024-12-02 15:25:52,755 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2024-12-02 15:25:52,756 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 290 flow [2024-12-02 15:25:52,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-12-02 15:25:52,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:25:52,756 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 15:25:52,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:25:52,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 15:25:52,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 289239610, now seen corresponding path program 1 times [2024-12-02 15:25:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731301666] [2024-12-02 15:25:52,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:25:52,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731301666] [2024-12-02 15:25:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731301666] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:25:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:25:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:25:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962443852] [2024-12-02 15:25:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:25:52,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:25:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:52,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:25:52,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:25:52,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-12-02 15:25:52,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 290 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) [2024-12-02 15:25:52,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:25:52,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-12-02 15:25:52,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:25:54,155 INFO L124 PetriNetUnfolderBase]: 6342/12991 cut-off events. [2024-12-02 15:25:54,155 INFO L125 PetriNetUnfolderBase]: For 4247/4254 co-relation queries the response was YES. [2024-12-02 15:25:54,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27127 conditions, 12991 events. 6342/12991 cut-off events. For 4247/4254 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 111329 event pairs, 1645 based on Foata normal form. 177/12205 useless extension candidates. Maximal degree in co-relation 17041. Up to 7737 conditions per place. [2024-12-02 15:25:54,215 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 133 selfloop transitions, 6 changer transitions 0/174 dead transitions. [2024-12-02 15:25:54,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 174 transitions, 814 flow [2024-12-02 15:25:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:25:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 15:25:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2024-12-02 15:25:54,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.589605734767025 [2024-12-02 15:25:54,218 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 290 flow. Second operand 6 states and 329 transitions. [2024-12-02 15:25:54,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 174 transitions, 814 flow [2024-12-02 15:25:54,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 174 transitions, 814 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:25:54,228 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 298 flow [2024-12-02 15:25:54,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-12-02 15:25:54,229 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2024-12-02 15:25:54,229 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 298 flow [2024-12-02 15:25:54,230 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) [2024-12-02 15:25:54,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:25:54,230 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 15:25:54,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:25:54,230 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)] === [2024-12-02 15:25:54,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash 376493925, now seen corresponding path program 1 times [2024-12-02 15:25:54,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42130825] [2024-12-02 15:25:54,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:54,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:25:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42130825] [2024-12-02 15:25:54,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42130825] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:25:54,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:25:54,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:25:54,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893463276] [2024-12-02 15:25:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:25:54,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:25:54,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:54,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:25:54,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:25:54,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-12-02 15:25:54,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 298 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) [2024-12-02 15:25:54,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:25:54,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-12-02 15:25:54,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:25:55,165 INFO L124 PetriNetUnfolderBase]: 6031/11998 cut-off events. [2024-12-02 15:25:55,165 INFO L125 PetriNetUnfolderBase]: For 5014/5019 co-relation queries the response was YES. [2024-12-02 15:25:55,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25920 conditions, 11998 events. 6031/11998 cut-off events. For 5014/5019 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 98403 event pairs, 1772 based on Foata normal form. 185/11530 useless extension candidates. Maximal degree in co-relation 19611. Up to 8290 conditions per place. [2024-12-02 15:25:55,204 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 108 selfloop transitions, 6 changer transitions 0/149 dead transitions. [2024-12-02 15:25:55,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 149 transitions, 704 flow [2024-12-02 15:25:55,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:25:55,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 15:25:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-12-02 15:25:55,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-12-02 15:25:55,206 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 298 flow. Second operand 4 states and 232 transitions. [2024-12-02 15:25:55,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 149 transitions, 704 flow [2024-12-02 15:25:55,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 688 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-12-02 15:25:55,216 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 298 flow [2024-12-02 15:25:55,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-12-02 15:25:55,217 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2024-12-02 15:25:55,217 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 298 flow [2024-12-02 15:25:55,218 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) [2024-12-02 15:25:55,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:25:55,218 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-12-02 15:25:55,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:25:55,218 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)] === [2024-12-02 15:25:55,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1033427131, now seen corresponding path program 1 times [2024-12-02 15:25:55,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:55,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015690052] [2024-12-02 15:25:55,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:55,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:25:55,248 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:25:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:25:55,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:25:55,278 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:25:55,278 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-12-02 15:25:55,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-12-02 15:25:55,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-12-02 15:25:55,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-12-02 15:25:55,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:25:55,280 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-02 15:25:55,281 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:25:55,281 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 15:25:55,310 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 15:25:55,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 126 transitions, 279 flow [2024-12-02 15:25:55,325 INFO L124 PetriNetUnfolderBase]: 34/228 cut-off events. [2024-12-02 15:25:55,325 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 15:25:55,326 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 927 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. [2024-12-02 15:25:55,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 126 transitions, 279 flow [2024-12-02 15:25:55,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 126 transitions, 279 flow [2024-12-02 15:25:55,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:25:55,329 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;@7d722689, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:25:55,329 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-12-02 15:25:55,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:25:55,331 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 15:25:55,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:25:55,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:25:55,332 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:25:55,332 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)] === [2024-12-02 15:25:55,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 675144584, now seen corresponding path program 1 times [2024-12-02 15:25:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:55,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857246451] [2024-12-02 15:25:55,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:55,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:25:55,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857246451] [2024-12-02 15:25:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857246451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:25:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:25:55,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:25:55,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757192811] [2024-12-02 15:25:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:25:55,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:25:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:55,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:25:55,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:25:55,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-12-02 15:25:55,395 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) [2024-12-02 15:25:55,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:25:55,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-12-02 15:25:55,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:26:05,732 INFO L124 PetriNetUnfolderBase]: 97039/170404 cut-off events. [2024-12-02 15:26:05,732 INFO L125 PetriNetUnfolderBase]: For 1844/1844 co-relation queries the response was YES. [2024-12-02 15:26:05,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306056 conditions, 170404 events. 97039/170404 cut-off events. For 1844/1844 co-relation queries the response was YES. Maximal size of possible extension queue 3576. Compared 1731488 event pairs, 68745 based on Foata normal form. 34555/190105 useless extension candidates. Maximal degree in co-relation 48648. Up to 134303 conditions per place. [2024-12-02 15:26:06,346 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 82 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-12-02 15:26:06,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 463 flow [2024-12-02 15:26:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:26:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 15:26:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2024-12-02 15:26:06,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-12-02 15:26:06,347 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 279 flow. Second operand 4 states and 312 transitions. [2024-12-02 15:26:06,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 463 flow [2024-12-02 15:26:06,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:26:06,350 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 263 flow [2024-12-02 15:26:06,350 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} [2024-12-02 15:26:06,351 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-12-02 15:26:06,351 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 263 flow [2024-12-02 15:26:06,351 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) [2024-12-02 15:26:06,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:26:06,351 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 15:26:06,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:26:06,351 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 15:26:06,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:26:06,352 INFO L85 PathProgramCache]: Analyzing trace with hash -475446182, now seen corresponding path program 1 times [2024-12-02 15:26:06,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:26:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8888793] [2024-12-02 15:26:06,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:26:06,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:26:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:26:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:26:06,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:26:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8888793] [2024-12-02 15:26:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8888793] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:26:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:26:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:26:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690793872] [2024-12-02 15:26:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:26:06,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:26:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:26:06,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:26:06,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:26:06,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-12-02 15:26:06,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 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) [2024-12-02 15:26:06,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:26:06,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-12-02 15:26:06,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:26:15,600 INFO L124 PetriNetUnfolderBase]: 90643/147308 cut-off events. [2024-12-02 15:26:15,600 INFO L125 PetriNetUnfolderBase]: For 10609/10609 co-relation queries the response was YES. [2024-12-02 15:26:15,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283731 conditions, 147308 events. 90643/147308 cut-off events. For 10609/10609 co-relation queries the response was YES. Maximal size of possible extension queue 3044. Compared 1380910 event pairs, 10114 based on Foata normal form. 2366/141100 useless extension candidates. Maximal degree in co-relation 21875. Up to 83865 conditions per place. [2024-12-02 15:26:16,424 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 150 selfloop transitions, 6 changer transitions 0/204 dead transitions. [2024-12-02 15:26:16,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 204 transitions, 765 flow [2024-12-02 15:26:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:26:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 15:26:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2024-12-02 15:26:16,426 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5886243386243386 [2024-12-02 15:26:16,427 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 263 flow. Second operand 6 states and 445 transitions. [2024-12-02 15:26:16,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 204 transitions, 765 flow [2024-12-02 15:26:16,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 204 transitions, 763 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 15:26:16,433 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 269 flow [2024-12-02 15:26:16,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-12-02 15:26:16,434 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 8 predicate places. [2024-12-02 15:26:16,434 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 269 flow [2024-12-02 15:26:16,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 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) [2024-12-02 15:26:16,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:26:16,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:26:16,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:26:16,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 15:26:16,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:26:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1756504084, now seen corresponding path program 1 times [2024-12-02 15:26:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:26:16,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329945071] [2024-12-02 15:26:16,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:26:16,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:26:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:26:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:26:16,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:26:16,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329945071] [2024-12-02 15:26:16,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329945071] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:26:16,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:26:16,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:26:16,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200001633] [2024-12-02 15:26:16,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:26:16,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:26:16,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:26:16,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:26:16,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:26:16,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2024-12-02 15:26:16,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-12-02 15:26:16,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:26:16,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2024-12-02 15:26:16,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:26:32,171 INFO L124 PetriNetUnfolderBase]: 137611/236693 cut-off events. [2024-12-02 15:26:32,171 INFO L125 PetriNetUnfolderBase]: For 19909/22652 co-relation queries the response was YES. [2024-12-02 15:26:32,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441854 conditions, 236693 events. 137611/236693 cut-off events. For 19909/22652 co-relation queries the response was YES. Maximal size of possible extension queue 5274. Compared 2466905 event pairs, 46351 based on Foata normal form. 3258/221960 useless extension candidates. Maximal degree in co-relation 263285. Up to 123526 conditions per place. [2024-12-02 15:26:33,169 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 180 selfloop transitions, 16 changer transitions 0/245 dead transitions. [2024-12-02 15:26:33,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 245 transitions, 1021 flow [2024-12-02 15:26:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:26:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 15:26:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 442 transitions. [2024-12-02 15:26:33,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7015873015873015 [2024-12-02 15:26:33,171 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 269 flow. Second operand 5 states and 442 transitions. [2024-12-02 15:26:33,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 245 transitions, 1021 flow [2024-12-02 15:26:33,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 245 transitions, 998 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-12-02 15:26:33,191 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 385 flow [2024-12-02 15:26:33,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=122, PETRI_TRANSITIONS=122} [2024-12-02 15:26:33,192 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 12 predicate places. [2024-12-02 15:26:33,192 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 385 flow [2024-12-02 15:26:33,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-12-02 15:26:33,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:26:33,192 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 15:26:33,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:26:33,193 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 15:26:33,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:26:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1853929021, now seen corresponding path program 1 times [2024-12-02 15:26:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:26:33,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918210899] [2024-12-02 15:26:33,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:26:33,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:26:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:26:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:26:33,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:26:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918210899] [2024-12-02 15:26:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918210899] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:26:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:26:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:26:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142144505] [2024-12-02 15:26:33,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:26:33,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:26:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:26:33,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:26:33,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:26:33,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-12-02 15:26:33,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-12-02 15:26:33,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:26:33,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-12-02 15:26:33,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:26:49,190 INFO L124 PetriNetUnfolderBase]: 136084/227793 cut-off events. [2024-12-02 15:26:49,190 INFO L125 PetriNetUnfolderBase]: For 89512/89545 co-relation queries the response was YES. [2024-12-02 15:26:49,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488726 conditions, 227793 events. 136084/227793 cut-off events. For 89512/89545 co-relation queries the response was YES. Maximal size of possible extension queue 5053. Compared 2294204 event pairs, 37817 based on Foata normal form. 2654/218038 useless extension candidates. Maximal degree in co-relation 284858. Up to 163190 conditions per place. [2024-12-02 15:26:50,355 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 154 selfloop transitions, 6 changer transitions 0/208 dead transitions. [2024-12-02 15:26:50,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 208 transitions, 975 flow [2024-12-02 15:26:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:26:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 15:26:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2024-12-02 15:26:50,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-12-02 15:26:50,357 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 385 flow. Second operand 4 states and 322 transitions. [2024-12-02 15:26:50,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 208 transitions, 975 flow [2024-12-02 15:26:50,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 208 transitions, 971 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 15:26:50,504 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 397 flow [2024-12-02 15:26:50,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=120, 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=4, PETRI_FLOW=397, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2024-12-02 15:26:50,505 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 14 predicate places. [2024-12-02 15:26:50,505 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 397 flow [2024-12-02 15:26:50,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-12-02 15:26:50,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:26:50,505 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:26:50,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:26:50,505 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 15:26:50,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:26:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash 312922500, now seen corresponding path program 1 times [2024-12-02 15:26:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:26:50,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617232948] [2024-12-02 15:26:50,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:26:50,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:26:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:26:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:26:50,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:26:50,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617232948] [2024-12-02 15:26:50,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617232948] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:26:50,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:26:50,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:26:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292565954] [2024-12-02 15:26:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:26:50,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:26:50,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:26:50,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:26:50,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:26:50,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2024-12-02 15:26:50,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-12-02 15:26:50,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:26:50,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2024-12-02 15:26:50,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:27:08,515 INFO L124 PetriNetUnfolderBase]: 151727/262044 cut-off events. [2024-12-02 15:27:08,515 INFO L125 PetriNetUnfolderBase]: For 119526/120290 co-relation queries the response was YES. [2024-12-02 15:27:09,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559605 conditions, 262044 events. 151727/262044 cut-off events. For 119526/120290 co-relation queries the response was YES. Maximal size of possible extension queue 5936. Compared 2782881 event pairs, 51717 based on Foata normal form. 7368/252576 useless extension candidates. Maximal degree in co-relation 340031. Up to 137917 conditions per place. [2024-12-02 15:27:09,799 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 181 selfloop transitions, 27 changer transitions 0/256 dead transitions. [2024-12-02 15:27:09,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 256 transitions, 1234 flow [2024-12-02 15:27:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:27:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 15:27:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2024-12-02 15:27:09,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-12-02 15:27:09,801 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 397 flow. Second operand 5 states and 441 transitions. [2024-12-02 15:27:09,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 256 transitions, 1234 flow [2024-12-02 15:27:09,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 256 transitions, 1219 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 15:27:09,885 INFO L231 Difference]: Finished difference. Result has 129 places, 135 transitions, 566 flow [2024-12-02 15:27:09,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=129, PETRI_TRANSITIONS=135} [2024-12-02 15:27:09,885 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 19 predicate places. [2024-12-02 15:27:09,885 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 135 transitions, 566 flow [2024-12-02 15:27:09,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-12-02 15:27:09,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:27:09,885 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:27:09,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:27:09,886 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 15:27:09,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:27:09,886 INFO L85 PathProgramCache]: Analyzing trace with hash 95456184, now seen corresponding path program 1 times [2024-12-02 15:27:09,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:27:09,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289551399] [2024-12-02 15:27:09,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:27:09,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:27:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:27:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:27:10,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:27:10,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289551399] [2024-12-02 15:27:10,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289551399] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:27:10,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:27:10,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:27:10,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580812058] [2024-12-02 15:27:10,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:27:10,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:27:10,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:27:10,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:27:10,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:27:10,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 126 [2024-12-02 15:27:10,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 135 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 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) [2024-12-02 15:27:10,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:27:10,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 126 [2024-12-02 15:27:10,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:27:33,891 INFO L124 PetriNetUnfolderBase]: 198376/334455 cut-off events. [2024-12-02 15:27:33,891 INFO L125 PetriNetUnfolderBase]: For 252067/256884 co-relation queries the response was YES. [2024-12-02 15:27:34,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767407 conditions, 334455 events. 198376/334455 cut-off events. For 252067/256884 co-relation queries the response was YES. Maximal size of possible extension queue 7756. Compared 3551661 event pairs, 45549 based on Foata normal form. 7374/323295 useless extension candidates. Maximal degree in co-relation 519616. Up to 137939 conditions per place. [2024-12-02 15:27:35,592 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 329 selfloop transitions, 52 changer transitions 0/427 dead transitions. [2024-12-02 15:27:35,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 427 transitions, 2282 flow [2024-12-02 15:27:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:27:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 15:27:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 783 transitions. [2024-12-02 15:27:35,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-12-02 15:27:35,594 INFO L175 Difference]: Start difference. First operand has 129 places, 135 transitions, 566 flow. Second operand 9 states and 783 transitions. [2024-12-02 15:27:35,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 427 transitions, 2282 flow [2024-12-02 15:27:36,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 427 transitions, 2282 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:27:36,817 INFO L231 Difference]: Finished difference. Result has 143 places, 160 transitions, 963 flow [2024-12-02 15:27:36,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=963, PETRI_PLACES=143, PETRI_TRANSITIONS=160} [2024-12-02 15:27:36,818 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 33 predicate places. [2024-12-02 15:27:36,818 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 160 transitions, 963 flow [2024-12-02 15:27:36,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 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) [2024-12-02 15:27:36,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:27:36,818 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-12-02 15:27:36,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:27:36,818 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 15:27:36,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:27:36,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1699249431, now seen corresponding path program 1 times [2024-12-02 15:27:36,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:27:36,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376954023] [2024-12-02 15:27:36,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:27:36,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:27:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:27:36,844 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:27:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:27:36,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:27:36,864 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:27:36,864 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-12-02 15:27:36,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-12-02 15:27:36,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-12-02 15:27:36,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-12-02 15:27:36,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-12-02 15:27:36,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-12-02 15:27:36,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:27:36,866 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:27:36,867 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:27:36,867 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 15:27:36,896 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 15:27:36,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 159 transitions, 358 flow [2024-12-02 15:27:36,931 INFO L124 PetriNetUnfolderBase]: 55/354 cut-off events. [2024-12-02 15:27:36,931 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-12-02 15:27:36,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 354 events. 55/354 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1609 event pairs, 6 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 256. Up to 32 conditions per place. [2024-12-02 15:27:36,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 159 transitions, 358 flow [2024-12-02 15:27:36,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 159 transitions, 358 flow [2024-12-02 15:27:36,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:27:36,939 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;@7d722689, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:27:36,940 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-12-02 15:27:36,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:27:36,942 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 15:27:36,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:27:36,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:27:36,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:27:36,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-12-02 15:27:36,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:27:36,943 INFO L85 PathProgramCache]: Analyzing trace with hash 826908870, now seen corresponding path program 1 times [2024-12-02 15:27:36,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:27:36,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710181174] [2024-12-02 15:27:36,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:27:36,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:27:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:27:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:27:37,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:27:37,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710181174] [2024-12-02 15:27:37,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710181174] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:27:37,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:27:37,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:27:37,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295773112] [2024-12-02 15:27:37,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:27:37,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:27:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:27:37,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:27:37,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:27:37,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 159 [2024-12-02 15:27:37,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 159 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2024-12-02 15:27:37,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:27:37,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 159 [2024-12-02 15:27:37,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand