./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/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_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/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_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:06:36,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:06:36,629 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 05:06:36,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:06:36,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:06:36,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:06:36,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:06:36,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:06:36,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:06:36,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:06:36,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:06:36,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:06:36,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:06:36,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:06:36,665 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:06:36,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:06:36,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:06:36,666 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:06:36,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:06:36,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:06:36,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:06:36,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:06:36,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:06:36,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:06:36,667 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:06:36,667 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:06:36,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:06:36,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:06:36,667 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:06:36,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:06:36,667 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:06:36,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:06:36,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:06:36,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:06:36,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:36,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:06:36,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:06:36,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:06:36,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:06:36,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:36,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:06:36,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:06:36,669 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:06:36,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:06:36,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:06:36,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:06:36,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:06:36,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:06:36,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:06:36,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:06:36,670 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_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/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 -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2024-11-28 05:06:36,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:06:36,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:06:36,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:06:37,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:06:37,001 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:06:37,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-11-28 05:06:40,096 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/data/50e8531b3/11c5f9d5f967484d92d7ae280a4675c0/FLAG2adddb3d9 [2024-11-28 05:06:40,499 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:06:40,499 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-11-28 05:06:40,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/data/50e8531b3/11c5f9d5f967484d92d7ae280a4675c0/FLAG2adddb3d9 [2024-11-28 05:06:40,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/data/50e8531b3/11c5f9d5f967484d92d7ae280a4675c0 [2024-11-28 05:06:40,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:06:40,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:06:40,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:06:40,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:06:40,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:06:40,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:40" (1/1) ... [2024-11-28 05:06:40,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31802377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:40, skipping insertion in model container [2024-11-28 05:06:40,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:40" (1/1) ... [2024-11-28 05:06:40,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:06:40,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:06:40,984 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:06:41,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:06:41,099 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:06:41,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41 WrapperNode [2024-11-28 05:06:41,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:06:41,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:06:41,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:06:41,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:06:41,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,161 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2024-11-28 05:06:41,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:06:41,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:06:41,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:06:41,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:06:41,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,178 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,194 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-11-28 05:06:41,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,202 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,213 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:06:41,214 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:06:41,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:06:41,215 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:06:41,216 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (1/1) ... [2024-11-28 05:06:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:41,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:41,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:06:41,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d467b8-90fd-4e7c-bd6a-6d3475cd13f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:06:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:06:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:06:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 05:06:41,310 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 05:06:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:06:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-28 05:06:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:06:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:06:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:06:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:06:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:06:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:06:41,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:06:41,312 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 05:06:41,527 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:06:41,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:06:41,869 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:06:41,869 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:06:42,038 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:06:42,038 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 05:06:42,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:42 BoogieIcfgContainer [2024-11-28 05:06:42,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:06:42,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:06:42,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:06:42,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:06:42,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:40" (1/3) ... [2024-11-28 05:06:42,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95551da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:42, skipping insertion in model container [2024-11-28 05:06:42,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:41" (2/3) ... [2024-11-28 05:06:42,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95551da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:42, skipping insertion in model container [2024-11-28 05:06:42,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:42" (3/3) ... [2024-11-28 05:06:42,050 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2024-11-28 05:06:42,067 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:06:42,069 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_41-trylock_racefree.i that has 2 procedures, 51 locations, 1 initial locations, 7 loop locations, and 8 error locations. [2024-11-28 05:06:42,069 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:06:42,121 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 05:06:42,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 62 transitions, 131 flow [2024-11-28 05:06:42,215 INFO L124 PetriNetUnfolderBase]: 15/79 cut-off events. [2024-11-28 05:06:42,219 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:06:42,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 15/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2024-11-28 05:06:42,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 62 transitions, 131 flow [2024-11-28 05:06:42,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 61 transitions, 129 flow [2024-11-28 05:06:42,252 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:06:42,271 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;@1623d0f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:06:42,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-28 05:06:42,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:06:42,286 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2024-11-28 05:06:42,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:06:42,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:42,287 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 05:06:42,288 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 05:06:42,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:42,295 INFO L85 PathProgramCache]: Analyzing trace with hash 338252441, now seen corresponding path program 1 times [2024-11-28 05:06:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:42,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141498476] [2024-11-28 05:06:42,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:42,700 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 05:06:42,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:42,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141498476] [2024-11-28 05:06:42,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141498476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:42,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:42,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:06:42,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198748855] [2024-11-28 05:06:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:42,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:42,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:42,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:42,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:42,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-28 05:06:42,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:42,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:42,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-28 05:06:42,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:43,070 INFO L124 PetriNetUnfolderBase]: 155/386 cut-off events. [2024-11-28 05:06:43,071 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:06:43,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 386 events. 155/386 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1812 event pairs, 22 based on Foata normal form. 80/427 useless extension candidates. Maximal degree in co-relation 690. Up to 290 conditions per place. [2024-11-28 05:06:43,076 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 48 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-11-28 05:06:43,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 255 flow [2024-11-28 05:06:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:06:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-28 05:06:43,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.657258064516129 [2024-11-28 05:06:43,097 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 129 flow. Second operand 4 states and 163 transitions. [2024-11-28 05:06:43,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 255 flow [2024-11-28 05:06:43,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 255 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:06:43,107 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 117 flow [2024-11-28 05:06:43,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-11-28 05:06:43,114 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-11-28 05:06:43,115 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 117 flow [2024-11-28 05:06:43,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:43,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:43,115 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:43,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:06:43,116 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 05:06:43,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 885567485, now seen corresponding path program 1 times [2024-11-28 05:06:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:43,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043178368] [2024-11-28 05:06:43,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:43,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:06:43,155 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:06:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:06:43,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:06:43,217 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:06:43,219 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-28 05:06:43,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-28 05:06:43,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-28 05:06:43,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-28 05:06:43,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-28 05:06:43,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-28 05:06:43,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-28 05:06:43,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-28 05:06:43,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-28 05:06:43,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-28 05:06:43,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-28 05:06:43,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-28 05:06:43,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-28 05:06:43,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:06:43,223 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 05:06:43,229 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:06:43,229 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 05:06:43,267 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 05:06:43,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 95 transitions, 206 flow [2024-11-28 05:06:43,299 INFO L124 PetriNetUnfolderBase]: 27/148 cut-off events. [2024-11-28 05:06:43,299 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 05:06:43,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 148 events. 27/148 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 535 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 93. Up to 9 conditions per place. [2024-11-28 05:06:43,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 95 transitions, 206 flow [2024-11-28 05:06:43,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 95 transitions, 206 flow [2024-11-28 05:06:43,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:06:43,306 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;@1623d0f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:06:43,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 05:06:43,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:06:43,314 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2024-11-28 05:06:43,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:06:43,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:43,318 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 05:06:43,318 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 05:06:43,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash 428941207, now seen corresponding path program 1 times [2024-11-28 05:06:43,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:43,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397366343] [2024-11-28 05:06:43,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:43,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:43,422 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 05:06:43,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:43,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397366343] [2024-11-28 05:06:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397366343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:43,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:43,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:06:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057700669] [2024-11-28 05:06:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:43,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:43,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:43,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:43,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2024-11-28 05:06:43,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:43,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:43,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2024-11-28 05:06:43,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:45,296 INFO L124 PetriNetUnfolderBase]: 4459/9284 cut-off events. [2024-11-28 05:06:45,297 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-28 05:06:45,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 9284 events. 4459/9284 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 76220 event pairs, 2024 based on Foata normal form. 1743/9961 useless extension candidates. Maximal degree in co-relation 1309. Up to 6961 conditions per place. [2024-11-28 05:06:45,364 INFO L140 encePairwiseOnDemand]: 74/95 looper letters, 66 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2024-11-28 05:06:45,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 105 transitions, 364 flow [2024-11-28 05:06:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:06:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2024-11-28 05:06:45,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6394736842105263 [2024-11-28 05:06:45,368 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 206 flow. Second operand 4 states and 243 transitions. [2024-11-28 05:06:45,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 105 transitions, 364 flow [2024-11-28 05:06:45,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:06:45,372 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 200 flow [2024-11-28 05:06:45,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-11-28 05:06:45,373 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-11-28 05:06:45,374 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 200 flow [2024-11-28 05:06:45,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:45,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:45,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:45,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:06:45,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 05:06:45,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:45,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2080071894, now seen corresponding path program 1 times [2024-11-28 05:06:45,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:45,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484054854] [2024-11-28 05:06:45,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:45,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:45,505 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 05:06:45,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484054854] [2024-11-28 05:06:45,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484054854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:45,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:45,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:06:45,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072230801] [2024-11-28 05:06:45,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:45,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:45,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:45,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:45,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:45,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2024-11-28 05:06:45,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 05:06:45,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:45,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2024-11-28 05:06:45,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:47,197 INFO L124 PetriNetUnfolderBase]: 5885/12068 cut-off events. [2024-11-28 05:06:47,197 INFO L125 PetriNetUnfolderBase]: For 456/788 co-relation queries the response was YES. [2024-11-28 05:06:47,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21906 conditions, 12068 events. 5885/12068 cut-off events. For 456/788 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 102907 event pairs, 1542 based on Foata normal form. 232/11130 useless extension candidates. Maximal degree in co-relation 21805. Up to 6030 conditions per place. [2024-11-28 05:06:47,285 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 126 selfloop transitions, 12 changer transitions 0/176 dead transitions. [2024-11-28 05:06:47,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 704 flow [2024-11-28 05:06:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:06:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:06:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 324 transitions. [2024-11-28 05:06:47,288 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6821052631578948 [2024-11-28 05:06:47,288 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 200 flow. Second operand 5 states and 324 transitions. [2024-11-28 05:06:47,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 176 transitions, 704 flow [2024-11-28 05:06:47,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:06:47,298 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 292 flow [2024-11-28 05:06:47,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-11-28 05:06:47,300 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2024-11-28 05:06:47,300 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 292 flow [2024-11-28 05:06:47,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 05:06:47,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:47,301 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:47,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:06:47,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-28 05:06:47,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1003177656, now seen corresponding path program 1 times [2024-11-28 05:06:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:47,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637766697] [2024-11-28 05:06:47,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:47,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:47,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637766697] [2024-11-28 05:06:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637766697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:47,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:47,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:47,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527717773] [2024-11-28 05:06:47,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:47,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:06:47,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:47,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:06:47,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:06:47,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2024-11-28 05:06:47,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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 05:06:47,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:47,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2024-11-28 05:06:47,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:49,424 INFO L124 PetriNetUnfolderBase]: 5974/11865 cut-off events. [2024-11-28 05:06:49,424 INFO L125 PetriNetUnfolderBase]: For 4066/4073 co-relation queries the response was YES. [2024-11-28 05:06:49,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25131 conditions, 11865 events. 5974/11865 cut-off events. For 4066/4073 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 99948 event pairs, 1526 based on Foata normal form. 152/10980 useless extension candidates. Maximal degree in co-relation 16006. Up to 7417 conditions per place. [2024-11-28 05:06:49,509 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 127 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2024-11-28 05:06:49,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 792 flow [2024-11-28 05:06:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:06:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:06:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2024-11-28 05:06:49,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5771929824561404 [2024-11-28 05:06:49,515 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 292 flow. Second operand 6 states and 329 transitions. [2024-11-28 05:06:49,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 792 flow [2024-11-28 05:06:49,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 169 transitions, 792 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:06:49,538 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 300 flow [2024-11-28 05:06:49,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-11-28 05:06:49,541 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2024-11-28 05:06:49,541 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 300 flow [2024-11-28 05:06:49,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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 05:06:49,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:49,542 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 05:06:49,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:06:49,544 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 05:06:49,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1033736737, now seen corresponding path program 1 times [2024-11-28 05:06:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:49,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669775516] [2024-11-28 05:06:49,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:49,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:49,626 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 05:06:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669775516] [2024-11-28 05:06:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669775516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:49,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:06:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102005322] [2024-11-28 05:06:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:49,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:49,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:49,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:49,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2024-11-28 05:06:49,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 05:06:49,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:49,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2024-11-28 05:06:49,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:50,823 INFO L124 PetriNetUnfolderBase]: 5711/11053 cut-off events. [2024-11-28 05:06:50,823 INFO L125 PetriNetUnfolderBase]: For 4756/4761 co-relation queries the response was YES. [2024-11-28 05:06:50,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24134 conditions, 11053 events. 5711/11053 cut-off events. For 4756/4761 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 89665 event pairs, 1963 based on Foata normal form. 160/10417 useless extension candidates. Maximal degree in co-relation 18272. Up to 7895 conditions per place. [2024-11-28 05:06:50,888 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 104 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-11-28 05:06:50,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 690 flow [2024-11-28 05:06:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:06:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-28 05:06:50,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2024-11-28 05:06:50,890 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 300 flow. Second operand 4 states and 232 transitions. [2024-11-28 05:06:50,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 690 flow [2024-11-28 05:06:50,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 146 transitions, 674 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 05:06:50,905 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 300 flow [2024-11-28 05:06:50,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-28 05:06:50,906 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2024-11-28 05:06:50,906 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 300 flow [2024-11-28 05:06:50,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 05:06:50,906 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:50,907 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 05:06:50,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:06:50,907 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 05:06:50,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:50,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1283572764, now seen corresponding path program 1 times [2024-11-28 05:06:50,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:50,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685704729] [2024-11-28 05:06:50,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:50,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:06:50,943 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:06:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:06:50,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:06:50,973 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:06:50,973 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-28 05:06:50,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-28 05:06:50,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-28 05:06:50,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-28 05:06:50,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-28 05:06:50,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-28 05:06:50,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-28 05:06:50,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-28 05:06:50,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:06:50,975 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 05:06:50,976 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:06:50,976 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 05:06:51,022 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:06:51,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 128 transitions, 283 flow [2024-11-28 05:06:51,053 INFO L124 PetriNetUnfolderBase]: 42/236 cut-off events. [2024-11-28 05:06:51,054 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 05:06:51,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 236 events. 42/236 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 937 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 163. Up to 12 conditions per place. [2024-11-28 05:06:51,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 128 transitions, 283 flow [2024-11-28 05:06:51,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 128 transitions, 283 flow [2024-11-28 05:06:51,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:06:51,059 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;@1623d0f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:06:51,059 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 05:06:51,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:06:51,062 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2024-11-28 05:06:51,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:06:51,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:51,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 05:06:51,062 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 05:06:51,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash 551122038, now seen corresponding path program 1 times [2024-11-28 05:06:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:51,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978011269] [2024-11-28 05:06:51,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:51,184 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 05:06:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978011269] [2024-11-28 05:06:51,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978011269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:51,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:51,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:06:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924652056] [2024-11-28 05:06:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:51,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:51,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:51,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:51,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:51,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 128 [2024-11-28 05:06:51,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 128 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 05:06:51,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:51,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 128 [2024-11-28 05:06:51,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:03,873 INFO L124 PetriNetUnfolderBase]: 83236/148816 cut-off events. [2024-11-28 05:07:03,873 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2024-11-28 05:07:04,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264708 conditions, 148816 events. 83236/148816 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 3340. Compared 1550105 event pairs, 52900 based on Foata normal form. 31272/165194 useless extension candidates. Maximal degree in co-relation 17247. Up to 114730 conditions per place. [2024-11-28 05:07:04,631 INFO L140 encePairwiseOnDemand]: 101/128 looper letters, 79 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-28 05:07:04,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 132 transitions, 455 flow [2024-11-28 05:07:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:07:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2024-11-28 05:07:04,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62109375 [2024-11-28 05:07:04,633 INFO L175 Difference]: Start difference. First operand has 110 places, 128 transitions, 283 flow. Second operand 4 states and 318 transitions. [2024-11-28 05:07:04,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 132 transitions, 455 flow [2024-11-28 05:07:04,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 132 transitions, 455 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:07:04,637 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 265 flow [2024-11-28 05:07:04,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2024-11-28 05:07:04,639 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-11-28 05:07:04,639 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 265 flow [2024-11-28 05:07:04,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 05:07:04,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:04,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:04,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:07:04,640 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:07:04,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -642924331, now seen corresponding path program 1 times [2024-11-28 05:07:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162426214] [2024-11-28 05:07:04,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:04,708 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 05:07:04,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:04,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162426214] [2024-11-28 05:07:04,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162426214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:04,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:04,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:07:04,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768512265] [2024-11-28 05:07:04,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:04,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:04,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:04,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:04,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:04,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 128 [2024-11-28 05:07:04,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 05:07:04,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:04,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 128 [2024-11-28 05:07:04,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:21,942 INFO L124 PetriNetUnfolderBase]: 119831/205333 cut-off events. [2024-11-28 05:07:21,942 INFO L125 PetriNetUnfolderBase]: For 7138/11657 co-relation queries the response was YES. [2024-11-28 05:07:22,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378065 conditions, 205333 events. 119831/205333 cut-off events. For 7138/11657 co-relation queries the response was YES. Maximal size of possible extension queue 4768. Compared 2119948 event pairs, 40368 based on Foata normal form. 3004/190670 useless extension candidates. Maximal degree in co-relation 377963. Up to 111308 conditions per place. [2024-11-28 05:07:22,873 INFO L140 encePairwiseOnDemand]: 117/128 looper letters, 178 selfloop transitions, 16 changer transitions 0/246 dead transitions. [2024-11-28 05:07:22,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 246 transitions, 997 flow [2024-11-28 05:07:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:07:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:07:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2024-11-28 05:07:22,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-11-28 05:07:22,875 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 265 flow. Second operand 5 states and 450 transitions. [2024-11-28 05:07:22,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 246 transitions, 997 flow [2024-11-28 05:07:22,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 246 transitions, 993 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:07:22,890 INFO L231 Difference]: Finished difference. Result has 122 places, 124 transitions, 391 flow [2024-11-28 05:07:22,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=122, PETRI_TRANSITIONS=124} [2024-11-28 05:07:22,891 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 12 predicate places. [2024-11-28 05:07:22,891 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 124 transitions, 391 flow [2024-11-28 05:07:22,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 05:07:22,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:22,891 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:22,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:07:22,892 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 05:07:22,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1550350872, now seen corresponding path program 1 times [2024-11-28 05:07:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096968581] [2024-11-28 05:07:22,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:22,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:22,980 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 05:07:22,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096968581] [2024-11-28 05:07:22,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096968581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:22,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:07:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920745248] [2024-11-28 05:07:22,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:22,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:07:22,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:22,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:07:22,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:07:22,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 128 [2024-11-28 05:07:22,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 124 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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 05:07:22,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:22,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 128 [2024-11-28 05:07:22,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand