./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:52:37,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:52:37,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:52:37,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:52:37,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:52:37,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:52:37,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:52:37,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:52:37,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:52:37,251 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:52:37,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:52:37,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:52:37,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:52:37,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:52:37,253 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:52:37,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:52:37,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:52:37,258 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:52:37,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:52:37,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:52:37,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:52:37,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:52:37,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:52:37,263 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:52:37,263 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:52:37,263 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:52:37,263 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:52:37,264 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:52:37,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:52:37,264 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:52:37,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:52:37,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:52:37,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:52:37,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:52:37,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:52:37,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:52:37,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:52:37,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:52:37,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:52:37,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:52:37,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:52:37,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:52:37,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:52:37,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:52:37,269 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2024-11-23 01:52:37,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:52:37,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:52:37,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:52:37,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:52:37,588 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:52:37,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-11-23 01:52:39,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:52:39,409 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:52:39,409 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-11-23 01:52:39,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b5963d1b/0ad586e898254754b8dee624bc83af2d/FLAG2df724526 [2024-11-23 01:52:39,702 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b5963d1b/0ad586e898254754b8dee624bc83af2d [2024-11-23 01:52:39,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:52:39,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:52:39,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:52:39,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:52:39,713 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:52:39,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:39" (1/1) ... [2024-11-23 01:52:39,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd106e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:39, skipping insertion in model container [2024-11-23 01:52:39,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:39" (1/1) ... [2024-11-23 01:52:39,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:52:40,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:52:40,201 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:52:40,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:52:40,306 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:52:40,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40 WrapperNode [2024-11-23 01:52:40,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:52:40,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:52:40,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:52:40,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:52:40,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,362 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 116 [2024-11-23 01:52:40,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:52:40,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:52:40,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:52:40,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:52:40,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,408 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-23 01:52:40,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:52:40,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:52:40,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:52:40,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:52:40,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2024-11-23 01:52:40,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:52:40,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:40,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:52:40,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:52:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:52:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:52:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:52:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 01:52:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:52:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:52:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:52:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 01:52:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:52:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-23 01:52:40,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:52:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:52:40,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:52:40,542 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:52:40,725 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:52:40,727 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:52:41,021 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:52:41,022 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:52:41,183 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:52:41,184 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-23 01:52:41,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:41 BoogieIcfgContainer [2024-11-23 01:52:41,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:52:41,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:52:41,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:52:41,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:52:41,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:39" (1/3) ... [2024-11-23 01:52:41,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a88f095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:41, skipping insertion in model container [2024-11-23 01:52:41,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (2/3) ... [2024-11-23 01:52:41,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a88f095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:41, skipping insertion in model container [2024-11-23 01:52:41,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:41" (3/3) ... [2024-11-23 01:52:41,195 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2024-11-23 01:52:41,211 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:52:41,212 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-23 01:52:41,212 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:52:41,269 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-23 01:52:41,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 97 transitions, 201 flow [2024-11-23 01:52:41,365 INFO L124 PetriNetUnfolderBase]: 24/138 cut-off events. [2024-11-23 01:52:41,365 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 01:52:41,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 138 events. 24/138 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 484 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2024-11-23 01:52:41,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 97 transitions, 201 flow [2024-11-23 01:52:41,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 96 transitions, 199 flow [2024-11-23 01:52:41,387 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:52:41,398 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;@5bba5de2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:52:41,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-23 01:52:41,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:52:41,406 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-23 01:52:41,406 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:41,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:41,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:52:41,407 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)] === [2024-11-23 01:52:41,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:41,414 INFO L85 PathProgramCache]: Analyzing trace with hash 442945318, now seen corresponding path program 1 times [2024-11-23 01:52:41,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:41,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634835136] [2024-11-23 01:52:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:41,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:41,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634835136] [2024-11-23 01:52:41,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634835136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:41,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:41,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418844539] [2024-11-23 01:52:41,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:41,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:41,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:41,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:41,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-11-23 01:52:41,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2024-11-23 01:52:41,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:41,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-11-23 01:52:41,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:42,199 INFO L124 PetriNetUnfolderBase]: 321/1001 cut-off events. [2024-11-23 01:52:42,201 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 01:52:42,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 1001 events. 321/1001 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6276 event pairs, 72 based on Foata normal form. 177/1096 useless extension candidates. Maximal degree in co-relation 1635. Up to 610 conditions per place. [2024-11-23 01:52:42,216 INFO L140 encePairwiseOnDemand]: 77/97 looper letters, 66 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-23 01:52:42,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 367 flow [2024-11-23 01:52:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-11-23 01:52:42,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6855670103092784 [2024-11-23 01:52:42,235 INFO L175 Difference]: Start difference. First operand has 84 places, 96 transitions, 199 flow. Second operand 4 states and 266 transitions. [2024-11-23 01:52:42,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 367 flow [2024-11-23 01:52:42,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 111 transitions, 367 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:42,246 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 177 flow [2024-11-23 01:52:42,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-11-23 01:52:42,252 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2024-11-23 01:52:42,254 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 177 flow [2024-11-23 01:52:42,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2024-11-23 01:52:42,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:42,256 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:42,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:52:42,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 01:52:42,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1644931690, now seen corresponding path program 1 times [2024-11-23 01:52:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:42,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695393556] [2024-11-23 01:52:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:42,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 01:52:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:42,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 01:52:42,350 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 01:52:42,352 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-23 01:52:42,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-23 01:52:42,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-23 01:52:42,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-23 01:52:42,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-23 01:52:42,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-23 01:52:42,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-23 01:52:42,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-23 01:52:42,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-23 01:52:42,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-23 01:52:42,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-23 01:52:42,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-23 01:52:42,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-23 01:52:42,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-23 01:52:42,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-23 01:52:42,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-23 01:52:42,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-23 01:52:42,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:52:42,359 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-23 01:52:42,361 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 01:52:42,361 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-23 01:52:42,395 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:52:42,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 141 transitions, 298 flow [2024-11-23 01:52:42,426 INFO L124 PetriNetUnfolderBase]: 41/242 cut-off events. [2024-11-23 01:52:42,427 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-11-23 01:52:42,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 242 events. 41/242 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1072 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 146. Up to 9 conditions per place. [2024-11-23 01:52:42,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 141 transitions, 298 flow [2024-11-23 01:52:42,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 141 transitions, 298 flow [2024-11-23 01:52:42,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:52:42,435 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;@5bba5de2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:52:42,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-23 01:52:42,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:52:42,438 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-23 01:52:42,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:42,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:42,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:52:42,439 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)] === [2024-11-23 01:52:42,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash 577542685, now seen corresponding path program 1 times [2024-11-23 01:52:42,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:42,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713276564] [2024-11-23 01:52:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:42,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:42,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:42,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713276564] [2024-11-23 01:52:42,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713276564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:42,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:42,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:42,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701452282] [2024-11-23 01:52:42,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:42,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:42,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:42,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:42,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:42,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2024-11-23 01:52:42,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 141 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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) [2024-11-23 01:52:42,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:42,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2024-11-23 01:52:42,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:45,380 INFO L124 PetriNetUnfolderBase]: 11566/24256 cut-off events. [2024-11-23 01:52:45,380 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2024-11-23 01:52:45,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42202 conditions, 24256 events. 11566/24256 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 233600 event pairs, 5340 based on Foata normal form. 4360/26528 useless extension candidates. Maximal degree in co-relation 3291. Up to 17810 conditions per place. [2024-11-23 01:52:45,573 INFO L140 encePairwiseOnDemand]: 115/141 looper letters, 88 selfloop transitions, 3 changer transitions 0/154 dead transitions. [2024-11-23 01:52:45,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 154 transitions, 506 flow [2024-11-23 01:52:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2024-11-23 01:52:45,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-11-23 01:52:45,577 INFO L175 Difference]: Start difference. First operand has 122 places, 141 transitions, 298 flow. Second operand 4 states and 378 transitions. [2024-11-23 01:52:45,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 154 transitions, 506 flow [2024-11-23 01:52:45,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 154 transitions, 506 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:45,587 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 282 flow [2024-11-23 01:52:45,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2024-11-23 01:52:45,588 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 5 predicate places. [2024-11-23 01:52:45,589 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 282 flow [2024-11-23 01:52:45,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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) [2024-11-23 01:52:45,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:45,589 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:45,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:52:45,590 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 01:52:45,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1588186234, now seen corresponding path program 1 times [2024-11-23 01:52:45,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:45,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568098263] [2024-11-23 01:52:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:45,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568098263] [2024-11-23 01:52:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568098263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:52:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872934672] [2024-11-23 01:52:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:45,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:45,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:52:45,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:52:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:45,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:52:45,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:52:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:45,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:52:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872934672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:45,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:52:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:52:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493657467] [2024-11-23 01:52:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:45,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:52:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:45,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:52:45,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:52:45,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2024-11-23 01:52:45,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 64.5) internal successors, (387), 6 states have internal predecessors, (387), 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) [2024-11-23 01:52:45,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:45,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2024-11-23 01:52:45,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:48,435 INFO L124 PetriNetUnfolderBase]: 11268/23261 cut-off events. [2024-11-23 01:52:48,436 INFO L125 PetriNetUnfolderBase]: For 1176/1176 co-relation queries the response was YES. [2024-11-23 01:52:48,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41726 conditions, 23261 events. 11268/23261 cut-off events. For 1176/1176 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 220800 event pairs, 1101 based on Foata normal form. 256/22046 useless extension candidates. Maximal degree in co-relation 36393. Up to 13608 conditions per place. [2024-11-23 01:52:48,638 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 144 selfloop transitions, 6 changer transitions 0/213 dead transitions. [2024-11-23 01:52:48,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 213 transitions, 760 flow [2024-11-23 01:52:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:52:48,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:52:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 529 transitions. [2024-11-23 01:52:48,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6252955082742316 [2024-11-23 01:52:48,641 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 282 flow. Second operand 6 states and 529 transitions. [2024-11-23 01:52:48,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 213 transitions, 760 flow [2024-11-23 01:52:48,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 213 transitions, 758 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:52:48,652 INFO L231 Difference]: Finished difference. Result has 130 places, 122 transitions, 288 flow [2024-11-23 01:52:48,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=130, PETRI_TRANSITIONS=122} [2024-11-23 01:52:48,653 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 8 predicate places. [2024-11-23 01:52:48,654 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 122 transitions, 288 flow [2024-11-23 01:52:48,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.5) internal successors, (387), 6 states have internal predecessors, (387), 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) [2024-11-23 01:52:48,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:48,655 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:52:48,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 01:52:48,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:48,857 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 01:52:48,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1989132355, now seen corresponding path program 1 times [2024-11-23 01:52:48,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:48,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293039542] [2024-11-23 01:52:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:48,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:52:49,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:49,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293039542] [2024-11-23 01:52:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293039542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:49,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:49,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:52:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373011007] [2024-11-23 01:52:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:49,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:49,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:49,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2024-11-23 01:52:49,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 122 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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) [2024-11-23 01:52:49,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:49,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2024-11-23 01:52:49,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:51,111 INFO L124 PetriNetUnfolderBase]: 10315/21388 cut-off events. [2024-11-23 01:52:51,112 INFO L125 PetriNetUnfolderBase]: For 2012/2012 co-relation queries the response was YES. [2024-11-23 01:52:51,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39199 conditions, 21388 events. 10315/21388 cut-off events. For 2012/2012 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 201315 event pairs, 481 based on Foata normal form. 256/20608 useless extension candidates. Maximal degree in co-relation 28645. Up to 13983 conditions per place. [2024-11-23 01:52:51,265 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 113 selfloop transitions, 6 changer transitions 0/182 dead transitions. [2024-11-23 01:52:51,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 182 transitions, 644 flow [2024-11-23 01:52:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2024-11-23 01:52:51,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6560283687943262 [2024-11-23 01:52:51,269 INFO L175 Difference]: Start difference. First operand has 130 places, 122 transitions, 288 flow. Second operand 4 states and 370 transitions. [2024-11-23 01:52:51,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 182 transitions, 644 flow [2024-11-23 01:52:51,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 182 transitions, 628 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-23 01:52:51,289 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 288 flow [2024-11-23 01:52:51,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2024-11-23 01:52:51,290 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 6 predicate places. [2024-11-23 01:52:51,291 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 288 flow [2024-11-23 01:52:51,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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) [2024-11-23 01:52:51,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:51,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:51,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:52:51,293 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 01:52:51,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:51,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1993106221, now seen corresponding path program 1 times [2024-11-23 01:52:51,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:51,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299956739] [2024-11-23 01:52:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:51,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:51,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299956739] [2024-11-23 01:52:51,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299956739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:52:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221478739] [2024-11-23 01:52:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:51,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:51,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:52:51,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:52:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:51,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:52:51,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:52:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:51,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:52:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:51,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221478739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:52:51,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:52:51,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-23 01:52:51,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295310086] [2024-11-23 01:52:51,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:52:51,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:52:51,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:52:51,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:52:51,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2024-11-23 01:52:51,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 288 flow. Second operand has 10 states, 10 states have (on average 64.9) internal successors, (649), 10 states have internal predecessors, (649), 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) [2024-11-23 01:52:51,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:51,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2024-11-23 01:52:51,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:52,202 INFO L124 PetriNetUnfolderBase]: 1758/3780 cut-off events. [2024-11-23 01:52:52,203 INFO L125 PetriNetUnfolderBase]: For 2686/2686 co-relation queries the response was YES. [2024-11-23 01:52:52,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8286 conditions, 3780 events. 1758/3780 cut-off events. For 2686/2686 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 27904 event pairs, 0 based on Foata normal form. 272/3953 useless extension candidates. Maximal degree in co-relation 613. Up to 1472 conditions per place. [2024-11-23 01:52:52,236 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 125 selfloop transitions, 5 changer transitions 0/174 dead transitions. [2024-11-23 01:52:52,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 174 transitions, 648 flow [2024-11-23 01:52:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:52:52,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:52:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2024-11-23 01:52:52,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5805471124620061 [2024-11-23 01:52:52,240 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 288 flow. Second operand 7 states and 573 transitions. [2024-11-23 01:52:52,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 174 transitions, 648 flow [2024-11-23 01:52:52,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 174 transitions, 639 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:52:52,251 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 205 flow [2024-11-23 01:52:52,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2024-11-23 01:52:52,254 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -27 predicate places. [2024-11-23 01:52:52,255 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 205 flow [2024-11-23 01:52:52,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.9) internal successors, (649), 10 states have internal predecessors, (649), 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) [2024-11-23 01:52:52,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:52,256 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-23 01:52:52,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:52:52,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 01:52:52,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-23 01:52:52,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash -295727839, now seen corresponding path program 1 times [2024-11-23 01:52:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:52,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341805535] [2024-11-23 01:52:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:52,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 01:52:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:52,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 01:52:52,544 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 01:52:52,544 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-23 01:52:52,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-11-23 01:52:52,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-11-23 01:52:52,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-11-23 01:52:52,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-11-23 01:52:52,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-11-23 01:52:52,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-11-23 01:52:52,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-11-23 01:52:52,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-11-23 01:52:52,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-11-23 01:52:52,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-11-23 01:52:52,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-11-23 01:52:52,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-11-23 01:52:52,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-11-23 01:52:52,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-11-23 01:52:52,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-11-23 01:52:52,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-11-23 01:52:52,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-11-23 01:52:52,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-11-23 01:52:52,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-11-23 01:52:52,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-11-23 01:52:52,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:52:52,549 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-23 01:52:52,550 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 01:52:52,550 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-23 01:52:52,587 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 01:52:52,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 185 transitions, 397 flow [2024-11-23 01:52:52,653 INFO L124 PetriNetUnfolderBase]: 61/365 cut-off events. [2024-11-23 01:52:52,654 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2024-11-23 01:52:52,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 365 events. 61/365 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1787 event pairs, 1 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 257. Up to 12 conditions per place. [2024-11-23 01:52:52,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 185 transitions, 397 flow [2024-11-23 01:52:52,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 185 transitions, 397 flow [2024-11-23 01:52:52,666 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:52:52,666 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;@5bba5de2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:52:52,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-23 01:52:52,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:52:52,670 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-23 01:52:52,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:52,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:52,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:52:52,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:52,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash 754129472, now seen corresponding path program 1 times [2024-11-23 01:52:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413309197] [2024-11-23 01:52:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:52,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413309197] [2024-11-23 01:52:52,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413309197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:52,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:52,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398651716] [2024-11-23 01:52:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:52,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:52,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2024-11-23 01:52:52,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 185 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2024-11-23 01:52:52,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:52,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2024-11-23 01:52:52,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand