./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:35:33,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:35:33,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:35:33,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:35:33,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:35:33,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:35:33,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:35:33,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:35:33,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:35:33,112 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:35:33,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:35:33,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:35:33,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:35:33,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:35:33,113 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:35:33,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:35:33,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:35:33,114 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:35:33,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:35:33,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:35:33,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:35:33,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:35:33,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:35:33,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:35:33,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:35:33,116 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:35:33,117 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:35:33,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:35:33,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:35:33,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:35:33,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:35:33,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:35:33,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:35:33,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:35:33,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:35:33,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:35:33,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:35:33,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:35:33,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:35:33,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:35:33,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:35:33,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:35:33,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:35:33,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:35:33,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2024-10-24 23:35:33,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:35:33,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:35:33,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:35:33,398 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:35:33,398 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:35:33,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-10-24 23:35:34,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:35:34,940 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:35:34,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-10-24 23:35:34,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb139a7f0/9fa064090bc04c3482918cbfd418d2c6/FLAG45d8c866f [2024-10-24 23:35:34,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb139a7f0/9fa064090bc04c3482918cbfd418d2c6 [2024-10-24 23:35:34,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:35:34,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:35:34,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:35:34,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:35:34,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:35:34,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:35:34" (1/1) ... [2024-10-24 23:35:34,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c225303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:34, skipping insertion in model container [2024-10-24 23:35:34,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:35:34" (1/1) ... [2024-10-24 23:35:35,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:35:35,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:35:35,331 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:35:35,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:35:35,417 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:35:35,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35 WrapperNode [2024-10-24 23:35:35,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:35:35,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:35:35,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:35:35,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:35:35,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,467 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2024-10-24 23:35:35,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:35:35,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:35:35,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:35:35,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:35:35,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,497 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [6, 2, 5, 5, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [1, 2, 5, 5, 0]. The 3 writes are split as follows [2, 0, 0, 0, 1]. [2024-10-24 23:35:35,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:35:35,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:35:35,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:35:35,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:35:35,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (1/1) ... [2024-10-24 23:35:35,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:35:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:35,561 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) [2024-10-24 23:35:35,567 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 [2024-10-24 23:35:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:35:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:35:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 23:35:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 23:35:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 23:35:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:35:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:35:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 23:35:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 23:35:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 23:35:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 23:35:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:35:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 23:35:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 23:35:35,649 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 23:35:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 23:35:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:35:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:35:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 23:35:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 23:35:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 23:35:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 23:35:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:35:35,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:35:35,652 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:35:35,826 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:35:35,828 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:35:36,031 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:35:36,032 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:35:36,198 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:35:36,199 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-24 23:35:36,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:35:36 BoogieIcfgContainer [2024-10-24 23:35:36,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:35:36,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:35:36,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:35:36,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:35:36,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:35:34" (1/3) ... [2024-10-24 23:35:36,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f34cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:35:36, skipping insertion in model container [2024-10-24 23:35:36,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:35" (2/3) ... [2024-10-24 23:35:36,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f34cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:35:36, skipping insertion in model container [2024-10-24 23:35:36,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:35:36" (3/3) ... [2024-10-24 23:35:36,205 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-10-24 23:35:36,216 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:35:36,217 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-24 23:35:36,217 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:35:36,244 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 23:35:36,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 60 transitions, 127 flow [2024-10-24 23:35:36,307 INFO L124 PetriNetUnfolderBase]: 11/75 cut-off events. [2024-10-24 23:35:36,311 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 23:35:36,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 11/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 221 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-10-24 23:35:36,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 60 transitions, 127 flow [2024-10-24 23:35:36,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 125 flow [2024-10-24 23:35:36,327 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:35:36,333 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;@64602fb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:35:36,333 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-24 23:35:36,337 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:35:36,337 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-24 23:35:36,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:36,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:36,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:35:36,339 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)] === [2024-10-24 23:35:36,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash 372509743, now seen corresponding path program 1 times [2024-10-24 23:35:36,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:36,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585316252] [2024-10-24 23:35:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:36,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:36,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585316252] [2024-10-24 23:35:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585316252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:36,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:36,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:36,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025242143] [2024-10-24 23:35:36,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:36,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:36,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:36,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:36,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-24 23:35:36,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:36,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:36,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-24 23:35:36,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:36,908 INFO L124 PetriNetUnfolderBase]: 144/390 cut-off events. [2024-10-24 23:35:36,908 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 23:35:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 390 events. 144/390 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1816 event pairs, 20 based on Foata normal form. 78/439 useless extension candidates. Maximal degree in co-relation 683. Up to 277 conditions per place. [2024-10-24 23:35:36,915 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 49 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-10-24 23:35:36,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 259 flow [2024-10-24 23:35:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-10-24 23:35:36,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-10-24 23:35:36,930 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 125 flow. Second operand 4 states and 163 transitions. [2024-10-24 23:35:36,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 259 flow [2024-10-24 23:35:36,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:36,938 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 115 flow [2024-10-24 23:35:36,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-10-24 23:35:36,942 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-10-24 23:35:36,942 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 115 flow [2024-10-24 23:35:36,943 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) [2024-10-24 23:35:36,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:36,943 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:36,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:35:36,944 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)] === [2024-10-24 23:35:36,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:36,945 INFO L85 PathProgramCache]: Analyzing trace with hash -757329433, now seen corresponding path program 1 times [2024-10-24 23:35:36,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:36,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395081584] [2024-10-24 23:35:36,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:36,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:36,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:35:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:37,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:35:37,003 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 23:35:37,005 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-24 23:35:37,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-24 23:35:37,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-24 23:35:37,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-24 23:35:37,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-24 23:35:37,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-24 23:35:37,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-24 23:35:37,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-24 23:35:37,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-24 23:35:37,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-24 23:35:37,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-24 23:35:37,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-24 23:35:37,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-24 23:35:37,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:35:37,010 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 23:35:37,013 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 23:35:37,013 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 23:35:37,033 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 23:35:37,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 93 transitions, 202 flow [2024-10-24 23:35:37,052 INFO L124 PetriNetUnfolderBase]: 21/142 cut-off events. [2024-10-24 23:35:37,052 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 23:35:37,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 21/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 500 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-10-24 23:35:37,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 93 transitions, 202 flow [2024-10-24 23:35:37,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 93 transitions, 202 flow [2024-10-24 23:35:37,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:35:37,059 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;@64602fb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:35:37,060 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-24 23:35:37,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:35:37,063 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-24 23:35:37,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:37,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:37,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:35:37,063 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)] === [2024-10-24 23:35:37,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash 461289899, now seen corresponding path program 1 times [2024-10-24 23:35:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:37,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727863792] [2024-10-24 23:35:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:37,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727863792] [2024-10-24 23:35:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727863792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192877746] [2024-10-24 23:35:37,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:37,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:37,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-10-24 23:35:37,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:37,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:37,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-10-24 23:35:37,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:38,077 INFO L124 PetriNetUnfolderBase]: 4742/10057 cut-off events. [2024-10-24 23:35:38,078 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-24 23:35:38,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17647 conditions, 10057 events. 4742/10057 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 83549 event pairs, 2232 based on Foata normal form. 1787/10846 useless extension candidates. Maximal degree in co-relation 1308. Up to 7478 conditions per place. [2024-10-24 23:35:38,135 INFO L140 encePairwiseOnDemand]: 73/93 looper letters, 68 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-10-24 23:35:38,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 370 flow [2024-10-24 23:35:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-10-24 23:35:38,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-10-24 23:35:38,138 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 202 flow. Second operand 4 states and 240 transitions. [2024-10-24 23:35:38,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 370 flow [2024-10-24 23:35:38,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:38,142 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 198 flow [2024-10-24 23:35:38,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-10-24 23:35:38,143 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-10-24 23:35:38,143 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 198 flow [2024-10-24 23:35:38,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:38,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:38,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:38,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:35:38,144 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)] === [2024-10-24 23:35:38,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:38,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1700145773, now seen corresponding path program 1 times [2024-10-24 23:35:38,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:38,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590011945] [2024-10-24 23:35:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:38,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:38,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590011945] [2024-10-24 23:35:38,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590011945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:38,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:38,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:38,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058872208] [2024-10-24 23:35:38,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:38,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:38,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-10-24 23:35:38,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:38,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:38,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-10-24 23:35:38,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:39,281 INFO L124 PetriNetUnfolderBase]: 6126/12726 cut-off events. [2024-10-24 23:35:39,281 INFO L125 PetriNetUnfolderBase]: For 515/888 co-relation queries the response was YES. [2024-10-24 23:35:39,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23109 conditions, 12726 events. 6126/12726 cut-off events. For 515/888 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 109296 event pairs, 1719 based on Foata normal form. 231/11901 useless extension candidates. Maximal degree in co-relation 23002. Up to 6013 conditions per place. [2024-10-24 23:35:39,334 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 123 selfloop transitions, 12 changer transitions 0/172 dead transitions. [2024-10-24 23:35:39,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 172 transitions, 690 flow [2024-10-24 23:35:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:35:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:35:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2024-10-24 23:35:39,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6795698924731183 [2024-10-24 23:35:39,340 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 198 flow. Second operand 5 states and 316 transitions. [2024-10-24 23:35:39,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 172 transitions, 690 flow [2024-10-24 23:35:39,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 172 transitions, 686 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:35:39,344 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 290 flow [2024-10-24 23:35:39,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2024-10-24 23:35:39,345 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2024-10-24 23:35:39,346 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 290 flow [2024-10-24 23:35:39,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:39,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:39,346 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:39,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:35:39,347 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)] === [2024-10-24 23:35:39,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1415344952, now seen corresponding path program 1 times [2024-10-24 23:35:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:39,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503180881] [2024-10-24 23:35:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:39,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:39,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503180881] [2024-10-24 23:35:39,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503180881] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:35:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293913556] [2024-10-24 23:35:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:39,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:39,427 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) [2024-10-24 23:35:39,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:35:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:39,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:35:39,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:35:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:39,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:35:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293913556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:35:39,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:35:39,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455243366] [2024-10-24 23:35:39,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:39,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:35:39,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:39,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:35:39,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:35:39,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-10-24 23:35:39,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:39,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:39,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-10-24 23:35:39,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:40,751 INFO L124 PetriNetUnfolderBase]: 6342/12978 cut-off events. [2024-10-24 23:35:40,752 INFO L125 PetriNetUnfolderBase]: For 4250/4257 co-relation queries the response was YES. [2024-10-24 23:35:40,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27114 conditions, 12978 events. 6342/12978 cut-off events. For 4250/4257 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 111230 event pairs, 1645 based on Foata normal form. 177/12192 useless extension candidates. Maximal degree in co-relation 17028. Up to 7737 conditions per place. [2024-10-24 23:35:40,793 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 133 selfloop transitions, 6 changer transitions 0/174 dead transitions. [2024-10-24 23:35:40,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 174 transitions, 814 flow [2024-10-24 23:35:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:35:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:35:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2024-10-24 23:35:40,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.589605734767025 [2024-10-24 23:35:40,795 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 290 flow. Second operand 6 states and 329 transitions. [2024-10-24 23:35:40,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 174 transitions, 814 flow [2024-10-24 23:35:40,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 174 transitions, 814 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:40,804 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 298 flow [2024-10-24 23:35:40,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-10-24 23:35:40,805 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2024-10-24 23:35:40,805 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 298 flow [2024-10-24 23:35:40,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:40,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:40,805 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 23:35:40,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:35:41,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:41,010 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)] === [2024-10-24 23:35:41,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:41,010 INFO L85 PathProgramCache]: Analyzing trace with hash 926021059, now seen corresponding path program 1 times [2024-10-24 23:35:41,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:41,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660681441] [2024-10-24 23:35:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:41,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:35:41,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660681441] [2024-10-24 23:35:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660681441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:41,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:41,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:35:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673150794] [2024-10-24 23:35:41,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:41,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:41,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:41,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:41,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:41,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-10-24 23:35:41,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:41,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:41,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-10-24 23:35:41,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:41,997 INFO L124 PetriNetUnfolderBase]: 6025/12175 cut-off events. [2024-10-24 23:35:41,998 INFO L125 PetriNetUnfolderBase]: For 4779/4783 co-relation queries the response was YES. [2024-10-24 23:35:42,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26087 conditions, 12175 events. 6025/12175 cut-off events. For 4779/4783 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 101662 event pairs, 1615 based on Foata normal form. 177/11628 useless extension candidates. Maximal degree in co-relation 16060. Up to 8282 conditions per place. [2024-10-24 23:35:42,056 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 108 selfloop transitions, 6 changer transitions 0/149 dead transitions. [2024-10-24 23:35:42,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 149 transitions, 704 flow [2024-10-24 23:35:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-10-24 23:35:42,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-10-24 23:35:42,058 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 298 flow. Second operand 4 states and 232 transitions. [2024-10-24 23:35:42,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 149 transitions, 704 flow [2024-10-24 23:35:42,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 688 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-24 23:35:42,066 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 298 flow [2024-10-24 23:35:42,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-10-24 23:35:42,067 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2024-10-24 23:35:42,067 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 298 flow [2024-10-24 23:35:42,068 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) [2024-10-24 23:35:42,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:42,068 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-24 23:35:42,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:35:42,068 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)] === [2024-10-24 23:35:42,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:42,069 INFO L85 PathProgramCache]: Analyzing trace with hash 848022298, now seen corresponding path program 1 times [2024-10-24 23:35:42,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:42,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641226985] [2024-10-24 23:35:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:42,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:42,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:35:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:42,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:35:42,091 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 23:35:42,091 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-24 23:35:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-24 23:35:42,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-24 23:35:42,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-24 23:35:42,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-24 23:35:42,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-24 23:35:42,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-24 23:35:42,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-24 23:35:42,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-24 23:35:42,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-24 23:35:42,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-24 23:35:42,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-24 23:35:42,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-24 23:35:42,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-24 23:35:42,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-24 23:35:42,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-24 23:35:42,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-24 23:35:42,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:35:42,094 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-24 23:35:42,095 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 23:35:42,095 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 23:35:42,117 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:35:42,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 126 transitions, 279 flow [2024-10-24 23:35:42,136 INFO L124 PetriNetUnfolderBase]: 34/228 cut-off events. [2024-10-24 23:35:42,137 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 23:35:42,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 34/228 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 927 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2024-10-24 23:35:42,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 126 transitions, 279 flow [2024-10-24 23:35:42,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 126 transitions, 279 flow [2024-10-24 23:35:42,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:35:42,144 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;@64602fb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:35:42,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-24 23:35:42,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:35:42,146 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-24 23:35:42,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:42,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:42,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:35:42,146 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)] === [2024-10-24 23:35:42,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:42,147 INFO L85 PathProgramCache]: Analyzing trace with hash 581562120, now seen corresponding path program 1 times [2024-10-24 23:35:42,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:42,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299587345] [2024-10-24 23:35:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:42,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:42,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:42,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299587345] [2024-10-24 23:35:42,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299587345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:42,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:42,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:42,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144175108] [2024-10-24 23:35:42,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:42,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:42,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:42,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-10-24 23:35:42,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:42,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:42,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-10-24 23:35:42,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:54,363 INFO L124 PetriNetUnfolderBase]: 97039/170404 cut-off events. [2024-10-24 23:35:54,364 INFO L125 PetriNetUnfolderBase]: For 1844/1844 co-relation queries the response was YES. [2024-10-24 23:35:54,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306056 conditions, 170404 events. 97039/170404 cut-off events. For 1844/1844 co-relation queries the response was YES. Maximal size of possible extension queue 3576. Compared 1733068 event pairs, 68745 based on Foata normal form. 34555/190105 useless extension candidates. Maximal degree in co-relation 48648. Up to 134303 conditions per place. [2024-10-24 23:35:55,256 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 82 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-10-24 23:35:55,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 463 flow [2024-10-24 23:35:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2024-10-24 23:35:55,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-10-24 23:35:55,258 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 279 flow. Second operand 4 states and 312 transitions. [2024-10-24 23:35:55,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 463 flow [2024-10-24 23:35:55,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:55,263 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 263 flow [2024-10-24 23:35:55,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-10-24 23:35:55,264 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-10-24 23:35:55,264 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 263 flow [2024-10-24 23:35:55,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:55,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:55,264 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:55,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:35:55,265 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)] === [2024-10-24 23:35:55,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:55,265 INFO L85 PathProgramCache]: Analyzing trace with hash 650659160, now seen corresponding path program 1 times [2024-10-24 23:35:55,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:55,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572247898] [2024-10-24 23:35:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572247898] [2024-10-24 23:35:55,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572247898] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:35:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66502051] [2024-10-24 23:35:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:55,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:55,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:55,337 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) [2024-10-24 23:35:55,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:35:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:55,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:35:55,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:35:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:55,442 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:35:55,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66502051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:55,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:35:55,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:35:55,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613376143] [2024-10-24 23:35:55,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:55,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:35:55,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:35:55,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:35:55,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-10-24 23:35:55,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:55,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:55,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-10-24 23:35:55,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:05,655 INFO L124 PetriNetUnfolderBase]: 90643/147307 cut-off events. [2024-10-24 23:36:05,656 INFO L125 PetriNetUnfolderBase]: For 10609/10609 co-relation queries the response was YES. [2024-10-24 23:36:05,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283730 conditions, 147307 events. 90643/147307 cut-off events. For 10609/10609 co-relation queries the response was YES. Maximal size of possible extension queue 3044. Compared 1383092 event pairs, 10114 based on Foata normal form. 2366/141102 useless extension candidates. Maximal degree in co-relation 21875. Up to 83865 conditions per place. [2024-10-24 23:36:06,504 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 150 selfloop transitions, 6 changer transitions 0/204 dead transitions. [2024-10-24 23:36:06,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 204 transitions, 765 flow [2024-10-24 23:36:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:36:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:36:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2024-10-24 23:36:06,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886243386243386 [2024-10-24 23:36:06,508 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 263 flow. Second operand 6 states and 445 transitions. [2024-10-24 23:36:06,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 204 transitions, 765 flow [2024-10-24 23:36:06,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 204 transitions, 763 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:36:06,524 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 269 flow [2024-10-24 23:36:06,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-10-24 23:36:06,525 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 8 predicate places. [2024-10-24 23:36:06,525 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 269 flow [2024-10-24 23:36:06,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:36:06,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:06,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:06,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:36:06,736 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,SelfDestructingSolverStorable8 [2024-10-24 23:36:06,737 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:36:06,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1440033710, now seen corresponding path program 1 times [2024-10-24 23:36:06,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:06,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791363804] [2024-10-24 23:36:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:06,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:36:06,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:06,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791363804] [2024-10-24 23:36:06,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791363804] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:36:06,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:36:06,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:36:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375727529] [2024-10-24 23:36:06,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:36:06,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:36:06,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:36:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:36:06,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2024-10-24 23:36:06,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:36:06,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:06,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2024-10-24 23:36:06,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand