./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.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_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:20:50,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:20:50,676 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:20:50,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:20:50,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:20:50,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:20:50,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:20:50,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:20:50,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:20:50,744 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:20:50,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:20:50,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:20:50,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:20:50,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:20:50,749 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:20:50,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:20:50,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:20:50,749 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:20:50,750 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:20:50,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:20:50,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:20:50,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:20:50,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:20:50,751 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:20:50,751 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:20:50,751 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:20:50,751 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:20:50,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:20:50,752 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:20:50,752 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:20:50,753 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:20:50,753 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:20:50,753 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:20:50,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:20:50,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:20:50,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:20:50,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:20:50,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:20:50,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:20:50,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:20:50,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:20:50,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:20:50,755 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:20:50,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:20:50,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:20:50,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:20:50,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:20:50,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:20:50,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:20:50,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:20:50,757 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_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2024-11-28 02:20:51,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:20:51,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:20:51,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:20:51,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:20:51,161 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:20:51,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-11-28 02:20:54,769 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/data/a57e4633d/bf46478aa92f48a095fdfb0a29bef741/FLAG04240863f [2024-11-28 02:20:55,243 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:20:55,250 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-11-28 02:20:55,273 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/data/a57e4633d/bf46478aa92f48a095fdfb0a29bef741/FLAG04240863f [2024-11-28 02:20:55,298 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/data/a57e4633d/bf46478aa92f48a095fdfb0a29bef741 [2024-11-28 02:20:55,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:20:55,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:20:55,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:20:55,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:20:55,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:20:55,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:20:55" (1/1) ... [2024-11-28 02:20:55,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403774b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:55, skipping insertion in model container [2024-11-28 02:20:55,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:20:55" (1/1) ... [2024-11-28 02:20:55,365 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:20:55,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:20:55,973 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:20:56,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:20:56,152 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:20:56,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56 WrapperNode [2024-11-28 02:20:56,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:20:56,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:20:56,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:20:56,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:20:56,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,237 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2024-11-28 02:20:56,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:20:56,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:20:56,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:20:56,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:20:56,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,263 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,298 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-28 02:20:56,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,315 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:20:56,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:20:56,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:20:56,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:20:56,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (1/1) ... [2024-11-28 02:20:56,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:20:56,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:20:56,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:20:56,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15be4a68-8b5e-46e7-a8da-100ef63089b5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:20:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:20:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:20:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:20:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:20:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:20:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:20:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:20:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:20:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:20:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:20:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:20:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:20:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:20:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:20:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:20:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:20:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:20:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:20:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:20:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:20:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:20:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:20:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:20:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:20:56,432 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:20:56,698 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:20:56,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:20:57,098 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:20:57,098 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:20:57,443 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:20:57,443 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 02:20:57,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:20:57 BoogieIcfgContainer [2024-11-28 02:20:57,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:20:57,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:20:57,446 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:20:57,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:20:57,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:20:55" (1/3) ... [2024-11-28 02:20:57,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53511ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:20:57, skipping insertion in model container [2024-11-28 02:20:57,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:20:56" (2/3) ... [2024-11-28 02:20:57,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53511ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:20:57, skipping insertion in model container [2024-11-28 02:20:57,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:20:57" (3/3) ... [2024-11-28 02:20:57,456 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2024-11-28 02:20:57,473 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:20:57,474 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_06-cond_racing1.i that has 2 procedures, 55 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2024-11-28 02:20:57,474 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:20:57,552 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 02:20:57,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 67 transitions, 141 flow [2024-11-28 02:20:57,693 INFO L124 PetriNetUnfolderBase]: 17/89 cut-off events. [2024-11-28 02:20:57,696 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:20:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 17/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 266 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2024-11-28 02:20:57,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 67 transitions, 141 flow [2024-11-28 02:20:57,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 66 transitions, 139 flow [2024-11-28 02:20:57,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:20:57,748 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;@50a53e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:20:57,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-28 02:20:57,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:20:57,760 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-11-28 02:20:57,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:20:57,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:20:57,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:20:57,762 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 02:20:57,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash 379521232, now seen corresponding path program 1 times [2024-11-28 02:20:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:20:57,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300660372] [2024-11-28 02:20:57,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:20:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:20:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:20:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300660372] [2024-11-28 02:20:58,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300660372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:20:58,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:20:58,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:20:58,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579278085] [2024-11-28 02:20:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:20:58,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:20:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:20:58,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:20:58,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:20:58,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-28 02:20:58,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:20:58,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:20:58,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-28 02:20:58,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:20:58,888 INFO L124 PetriNetUnfolderBase]: 159/431 cut-off events. [2024-11-28 02:20:58,888 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:20:58,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 431 events. 159/431 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2124 event pairs, 20 based on Foata normal form. 72/444 useless extension candidates. Maximal degree in co-relation 709. Up to 264 conditions per place. [2024-11-28 02:20:58,900 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 47 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-28 02:20:58,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 265 flow [2024-11-28 02:20:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:20:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:20:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-11-28 02:20:58,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7052238805970149 [2024-11-28 02:20:58,927 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 139 flow. Second operand 4 states and 189 transitions. [2024-11-28 02:20:58,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 265 flow [2024-11-28 02:20:58,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:20:58,945 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 129 flow [2024-11-28 02:20:58,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-11-28 02:20:58,957 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-11-28 02:20:58,957 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 129 flow [2024-11-28 02:20:58,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:20:58,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:20:58,957 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:20:58,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:20:58,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-28 02:20:58,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:58,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1963468402, now seen corresponding path program 1 times [2024-11-28 02:20:58,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:20:58,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502339267] [2024-11-28 02:20:58,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:58,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:20:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:20:59,026 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:20:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:20:59,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:20:59,084 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:20:59,086 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-28 02:20:59,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-28 02:20:59,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-28 02:20:59,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-28 02:20:59,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-28 02:20:59,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-28 02:20:59,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-28 02:20:59,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-28 02:20:59,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-28 02:20:59,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-28 02:20:59,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-28 02:20:59,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-28 02:20:59,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-28 02:20:59,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:20:59,097 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:20:59,105 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:20:59,105 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:20:59,161 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:20:59,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 100 transitions, 216 flow [2024-11-28 02:20:59,201 INFO L124 PetriNetUnfolderBase]: 30/163 cut-off events. [2024-11-28 02:20:59,201 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 02:20:59,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 163 events. 30/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 602 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 98. Up to 9 conditions per place. [2024-11-28 02:20:59,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 100 transitions, 216 flow [2024-11-28 02:20:59,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 100 transitions, 216 flow [2024-11-28 02:20:59,215 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:20:59,215 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;@50a53e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:20:59,215 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 02:20:59,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:20:59,222 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-11-28 02:20:59,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:20:59,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:20:59,222 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:20:59,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:20:59,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash 474981523, now seen corresponding path program 1 times [2024-11-28 02:20:59,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:20:59,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402331169] [2024-11-28 02:20:59,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:20:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:20:59,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:20:59,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402331169] [2024-11-28 02:20:59,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402331169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:20:59,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:20:59,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:20:59,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904395494] [2024-11-28 02:20:59,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:20:59,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:20:59,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:20:59,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:20:59,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:20:59,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-11-28 02:20:59,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:20:59,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:20:59,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-11-28 02:20:59,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:21:01,347 INFO L124 PetriNetUnfolderBase]: 4611/9735 cut-off events. [2024-11-28 02:21:01,348 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-28 02:21:01,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16808 conditions, 9735 events. 4611/9735 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 83234 event pairs, 1952 based on Foata normal form. 1699/10276 useless extension candidates. Maximal degree in co-relation 1345. Up to 6969 conditions per place. [2024-11-28 02:21:01,435 INFO L140 encePairwiseOnDemand]: 80/100 looper letters, 65 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-28 02:21:01,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 374 flow [2024-11-28 02:21:01,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:21:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:21:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2024-11-28 02:21:01,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6725 [2024-11-28 02:21:01,440 INFO L175 Difference]: Start difference. First operand has 86 places, 100 transitions, 216 flow. Second operand 4 states and 269 transitions. [2024-11-28 02:21:01,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 374 flow [2024-11-28 02:21:01,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:21:01,444 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 212 flow [2024-11-28 02:21:01,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2024-11-28 02:21:01,445 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2024-11-28 02:21:01,446 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 212 flow [2024-11-28 02:21:01,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:01,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:21:01,446 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:01,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:21:01,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:21:01,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash 763522310, now seen corresponding path program 1 times [2024-11-28 02:21:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386458005] [2024-11-28 02:21:01,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:01,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:21:01,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:01,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386458005] [2024-11-28 02:21:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386458005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:21:01,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:21:01,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:21:01,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343186339] [2024-11-28 02:21:01,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:21:01,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:21:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:01,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:21:01,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:21:01,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-11-28 02:21:01,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:01,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:21:01,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-11-28 02:21:01,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:21:03,228 INFO L124 PetriNetUnfolderBase]: 3957/8100 cut-off events. [2024-11-28 02:21:03,228 INFO L125 PetriNetUnfolderBase]: For 632/632 co-relation queries the response was YES. [2024-11-28 02:21:03,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14691 conditions, 8100 events. 3957/8100 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 65783 event pairs, 326 based on Foata normal form. 144/7313 useless extension candidates. Maximal degree in co-relation 3523. Up to 3893 conditions per place. [2024-11-28 02:21:03,303 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 105 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-11-28 02:21:03,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 564 flow [2024-11-28 02:21:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:21:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:21:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-11-28 02:21:03,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-28 02:21:03,307 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 212 flow. Second operand 6 states and 370 transitions. [2024-11-28 02:21:03,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 564 flow [2024-11-28 02:21:03,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:21:03,319 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 218 flow [2024-11-28 02:21:03,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-11-28 02:21:03,320 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2024-11-28 02:21:03,320 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 218 flow [2024-11-28 02:21:03,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:03,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:21:03,322 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:03,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:21:03,322 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:21:03,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1510597726, now seen corresponding path program 1 times [2024-11-28 02:21:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:03,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473125945] [2024-11-28 02:21:03,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:21:03,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:03,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473125945] [2024-11-28 02:21:03,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473125945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:21:03,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:21:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:21:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223750714] [2024-11-28 02:21:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:21:03,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:21:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:03,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:21:03,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:21:03,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 100 [2024-11-28 02:21:03,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:03,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:21:03,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 100 [2024-11-28 02:21:03,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:21:05,617 INFO L124 PetriNetUnfolderBase]: 6320/12941 cut-off events. [2024-11-28 02:21:05,618 INFO L125 PetriNetUnfolderBase]: For 1175/1336 co-relation queries the response was YES. [2024-11-28 02:21:05,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23410 conditions, 12941 events. 6320/12941 cut-off events. For 1175/1336 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 112452 event pairs, 1495 based on Foata normal form. 222/11783 useless extension candidates. Maximal degree in co-relation 18886. Up to 6459 conditions per place. [2024-11-28 02:21:05,698 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 122 selfloop transitions, 12 changer transitions 0/178 dead transitions. [2024-11-28 02:21:05,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 722 flow [2024-11-28 02:21:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:21:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:21:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2024-11-28 02:21:05,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-11-28 02:21:05,701 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 218 flow. Second operand 5 states and 355 transitions. [2024-11-28 02:21:05,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 722 flow [2024-11-28 02:21:05,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 178 transitions, 699 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-28 02:21:05,709 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 300 flow [2024-11-28 02:21:05,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-11-28 02:21:05,710 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2024-11-28 02:21:05,710 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 300 flow [2024-11-28 02:21:05,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:05,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:21:05,711 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:21:05,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:21:05,711 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:21:05,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2100611696, now seen corresponding path program 1 times [2024-11-28 02:21:05,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:05,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742049539] [2024-11-28 02:21:05,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:05,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:21:05,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742049539] [2024-11-28 02:21:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742049539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:21:05,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:21:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:21:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771284897] [2024-11-28 02:21:05,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:21:05,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:21:05,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:05,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:21:05,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:21:05,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-11-28 02:21:05,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:05,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:21:05,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-11-28 02:21:05,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:21:07,433 INFO L124 PetriNetUnfolderBase]: 5333/11397 cut-off events. [2024-11-28 02:21:07,433 INFO L125 PetriNetUnfolderBase]: For 3629/3633 co-relation queries the response was YES. [2024-11-28 02:21:07,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22696 conditions, 11397 events. 5333/11397 cut-off events. For 3629/3633 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 99491 event pairs, 513 based on Foata normal form. 152/10318 useless extension candidates. Maximal degree in co-relation 19383. Up to 7054 conditions per place. [2024-11-28 02:21:07,501 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 103 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-11-28 02:21:07,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 688 flow [2024-11-28 02:21:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:21:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:21:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-11-28 02:21:07,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6475 [2024-11-28 02:21:07,506 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 300 flow. Second operand 4 states and 259 transitions. [2024-11-28 02:21:07,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 688 flow [2024-11-28 02:21:07,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 684 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:21:07,521 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 312 flow [2024-11-28 02:21:07,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2024-11-28 02:21:07,525 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2024-11-28 02:21:07,525 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 312 flow [2024-11-28 02:21:07,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:07,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:21:07,525 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 02:21:07,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:21:07,526 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 02:21:07,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:07,526 INFO L85 PathProgramCache]: Analyzing trace with hash -53194113, now seen corresponding path program 1 times [2024-11-28 02:21:07,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:07,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694307332] [2024-11-28 02:21:07,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:07,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:21:07,557 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:21:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:21:07,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:21:07,579 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:21:07,580 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-28 02:21:07,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-28 02:21:07,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-28 02:21:07,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-28 02:21:07,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-28 02:21:07,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-28 02:21:07,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-28 02:21:07,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-28 02:21:07,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-28 02:21:07,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-28 02:21:07,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-28 02:21:07,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-28 02:21:07,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-28 02:21:07,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-28 02:21:07,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-28 02:21:07,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-28 02:21:07,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-28 02:21:07,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:21:07,583 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 02:21:07,584 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:21:07,584 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:21:07,632 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 02:21:07,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 133 transitions, 293 flow [2024-11-28 02:21:07,676 INFO L124 PetriNetUnfolderBase]: 46/256 cut-off events. [2024-11-28 02:21:07,676 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 02:21:07,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 256 events. 46/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1036 event pairs, 1 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 178. Up to 12 conditions per place. [2024-11-28 02:21:07,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 133 transitions, 293 flow [2024-11-28 02:21:07,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 133 transitions, 293 flow [2024-11-28 02:21:07,682 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:21:07,683 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;@50a53e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:21:07,683 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 02:21:07,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:21:07,686 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-11-28 02:21:07,686 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:21:07,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:21:07,686 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:21:07,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 02:21:07,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash 601933879, now seen corresponding path program 1 times [2024-11-28 02:21:07,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:07,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854053708] [2024-11-28 02:21:07,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:07,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:21:07,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:07,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854053708] [2024-11-28 02:21:07,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854053708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:21:07,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:21:07,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:21:07,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25530799] [2024-11-28 02:21:07,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:21:07,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:21:07,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:07,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:21:07,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:21:07,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-11-28 02:21:07,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:07,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:21:07,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-11-28 02:21:07,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:21:23,280 INFO L124 PetriNetUnfolderBase]: 86447/153025 cut-off events. [2024-11-28 02:21:23,280 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2024-11-28 02:21:23,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271744 conditions, 153025 events. 86447/153025 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 3590. Compared 1600493 event pairs, 52468 based on Foata normal form. 31112/168963 useless extension candidates. Maximal degree in co-relation 17771. Up to 117557 conditions per place. [2024-11-28 02:21:24,381 INFO L140 encePairwiseOnDemand]: 107/133 looper letters, 78 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-11-28 02:21:24,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 465 flow [2024-11-28 02:21:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:21:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:21:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2024-11-28 02:21:24,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6466165413533834 [2024-11-28 02:21:24,387 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 293 flow. Second operand 4 states and 344 transitions. [2024-11-28 02:21:24,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 465 flow [2024-11-28 02:21:24,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 138 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:21:24,397 INFO L231 Difference]: Finished difference. Result has 119 places, 115 transitions, 277 flow [2024-11-28 02:21:24,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2024-11-28 02:21:24,398 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2024-11-28 02:21:24,398 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 277 flow [2024-11-28 02:21:24,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:24,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:21:24,399 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:24,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:21:24,399 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)] === [2024-11-28 02:21:24,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:24,400 INFO L85 PathProgramCache]: Analyzing trace with hash 295375750, now seen corresponding path program 1 times [2024-11-28 02:21:24,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437352485] [2024-11-28 02:21:24,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:21:24,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:24,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437352485] [2024-11-28 02:21:24,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437352485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:21:24,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:21:24,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:21:24,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571309644] [2024-11-28 02:21:24,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:21:24,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:21:24,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:24,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:21:24,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:21:24,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-11-28 02:21:24,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:24,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:21:24,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-11-28 02:21:24,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:21:36,536 INFO L124 PetriNetUnfolderBase]: 71934/125288 cut-off events. [2024-11-28 02:21:36,536 INFO L125 PetriNetUnfolderBase]: For 8797/8797 co-relation queries the response was YES. [2024-11-28 02:21:36,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229906 conditions, 125288 events. 71934/125288 cut-off events. For 8797/8797 co-relation queries the response was YES. Maximal size of possible extension queue 2856. Compared 1261222 event pairs, 7896 based on Foata normal form. 1872/114841 useless extension candidates. Maximal degree in co-relation 19478. Up to 63134 conditions per place. [2024-11-28 02:21:37,688 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 140 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2024-11-28 02:21:37,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 203 transitions, 743 flow [2024-11-28 02:21:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:21:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:21:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 489 transitions. [2024-11-28 02:21:37,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-11-28 02:21:37,690 INFO L175 Difference]: Start difference. First operand has 119 places, 115 transitions, 277 flow. Second operand 6 states and 489 transitions. [2024-11-28 02:21:37,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 203 transitions, 743 flow [2024-11-28 02:21:37,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 203 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:21:37,703 INFO L231 Difference]: Finished difference. Result has 122 places, 114 transitions, 283 flow [2024-11-28 02:21:37,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2024-11-28 02:21:37,704 INFO L279 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2024-11-28 02:21:37,705 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 283 flow [2024-11-28 02:21:37,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:37,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:21:37,705 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:37,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:21:37,706 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)] === [2024-11-28 02:21:37,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2067249021, now seen corresponding path program 1 times [2024-11-28 02:21:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:37,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29006573] [2024-11-28 02:21:37,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:21:37,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:37,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29006573] [2024-11-28 02:21:37,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29006573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:21:37,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:21:37,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:21:37,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10943982] [2024-11-28 02:21:37,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:21:37,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:21:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:37,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:21:37,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:21:37,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2024-11-28 02:21:37,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:37,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:21:37,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2024-11-28 02:21:37,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand