./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_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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_05-lockfuns_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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:54:56,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:54:56,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 21:54:56,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:54:56,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:54:56,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:54:56,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:54:56,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:54:56,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:54:56,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:54:56,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:54:56,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:54:56,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:54:56,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:54:56,246 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:54:56,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:54:56,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:54:56,247 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 21:54:56,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:54:56,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 21:54:56,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:54:56,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:54:56,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:54:56,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:54:56,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:54:56,252 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:54:56,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:54:56,253 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 21:54:56,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:54:56,253 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:54:56,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:54:56,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:54:56,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:54:56,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:54:56,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:54:56,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:54:56,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:54:56,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:54:56,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:54:56,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:54:56,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:54:56,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:54:56,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:54:56,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:54:56,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2024-11-20 21:54:56,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:54:56,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:54:56,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:54:56,596 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:54:56,596 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:54:56,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-11-20 21:54:58,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:54:58,290 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:54:58,290 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-11-20 21:54:58,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd89277fb/0a732adb93ed4828874c23e072b88648/FLAG94904b14f [2024-11-20 21:54:58,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd89277fb/0a732adb93ed4828874c23e072b88648 [2024-11-20 21:54:58,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:54:58,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:54:58,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:54:58,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:54:58,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:54:58,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:58,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d6a7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58, skipping insertion in model container [2024-11-20 21:54:58,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:58,368 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:54:58,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:54:58,804 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:54:58,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:54:58,990 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:54:58,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58 WrapperNode [2024-11-20 21:54:58,991 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:54:58,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:54:58,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:54:58,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:54:58,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,040 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2024-11-20 21:54:59,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:54:59,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:54:59,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:54:59,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:54:59,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,075 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-20 21:54:59,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:54:59,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:54:59,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:54:59,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:54:59,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (1/1) ... [2024-11-20 21:54:59,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:54:59,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:54:59,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 21:54:59,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 21:54:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 21:54:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 21:54:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 21:54:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 21:54:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 21:54:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 21:54:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 21:54:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 21:54:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 21:54:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 21:54:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:54:59,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:54:59,209 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 21:54:59,371 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:54:59,373 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:54:59,607 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 21:54:59,608 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:54:59,772 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:54:59,773 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-20 21:54:59,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:54:59 BoogieIcfgContainer [2024-11-20 21:54:59,773 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:54:59,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:54:59,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:54:59,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:54:59,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:54:58" (1/3) ... [2024-11-20 21:54:59,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9105d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:54:59, skipping insertion in model container [2024-11-20 21:54:59,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:54:58" (2/3) ... [2024-11-20 21:54:59,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9105d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:54:59, skipping insertion in model container [2024-11-20 21:54:59,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:54:59" (3/3) ... [2024-11-20 21:54:59,788 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2024-11-20 21:54:59,802 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:54:59,802 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-20 21:54:59,802 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 21:54:59,844 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 21:54:59,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 62 transitions, 131 flow [2024-11-20 21:54:59,916 INFO L124 PetriNetUnfolderBase]: 11/78 cut-off events. [2024-11-20 21:54:59,916 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 21:54:59,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 78 events. 11/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 233 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-11-20 21:54:59,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 62 transitions, 131 flow [2024-11-20 21:54:59,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 61 transitions, 129 flow [2024-11-20 21:54:59,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:54:59,942 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;@6132073a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:54:59,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-20 21:54:59,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:54:59,957 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-20 21:54:59,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:54:59,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:59,958 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 21:54:59,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:59,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash 339234515, now seen corresponding path program 1 times [2024-11-20 21:54:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:59,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268651177] [2024-11-20 21:54:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:55:00,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268651177] [2024-11-20 21:55:00,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268651177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:00,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:00,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:55:00,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011771820] [2024-11-20 21:55:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:00,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:00,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:00,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-20 21:55:00,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:00,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:00,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-20 21:55:00,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:55:00,594 INFO L124 PetriNetUnfolderBase]: 182/508 cut-off events. [2024-11-20 21:55:00,595 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 21:55:00,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 508 events. 182/508 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2534 event pairs, 26 based on Foata normal form. 88/540 useless extension candidates. Maximal degree in co-relation 877. Up to 282 conditions per place. [2024-11-20 21:55:00,600 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 52 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-20 21:55:00,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 275 flow [2024-11-20 21:55:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:55:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:55:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-11-20 21:55:00,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6653225806451613 [2024-11-20 21:55:00,616 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 129 flow. Second operand 4 states and 165 transitions. [2024-11-20 21:55:00,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 275 flow [2024-11-20 21:55:00,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:55:00,622 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 119 flow [2024-11-20 21:55:00,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-20 21:55:00,629 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-20 21:55:00,629 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 119 flow [2024-11-20 21:55:00,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:00,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:00,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 21:55:00,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:55:00,632 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:55:00,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:00,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1926335722, now seen corresponding path program 1 times [2024-11-20 21:55:00,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:00,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857691460] [2024-11-20 21:55:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:00,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:55:00,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:00,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857691460] [2024-11-20 21:55:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857691460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:00,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:00,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:55:00,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614489325] [2024-11-20 21:55:00,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:00,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:00,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:00,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-20 21:55:00,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:00,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:00,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-20 21:55:00,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:55:00,916 INFO L124 PetriNetUnfolderBase]: 169/520 cut-off events. [2024-11-20 21:55:00,916 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-20 21:55:00,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 520 events. 169/520 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2497 event pairs, 66 based on Foata normal form. 15/504 useless extension candidates. Maximal degree in co-relation 909. Up to 326 conditions per place. [2024-11-20 21:55:00,921 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 53 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-20 21:55:00,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 283 flow [2024-11-20 21:55:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:55:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:55:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-20 21:55:00,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2024-11-20 21:55:00,924 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 119 flow. Second operand 4 states and 146 transitions. [2024-11-20 21:55:00,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 283 flow [2024-11-20 21:55:00,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 275 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:55:00,928 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2024-11-20 21:55:00,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-20 21:55:00,930 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-20 21:55:00,930 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2024-11-20 21:55:00,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:00,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:00,931 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-20 21:55:00,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 21:55:00,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:55:00,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash 77735140, now seen corresponding path program 1 times [2024-11-20 21:55:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123312080] [2024-11-20 21:55:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:00,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:55:00,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 21:55:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:55:01,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 21:55:01,010 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 21:55:01,011 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-20 21:55:01,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-20 21:55:01,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-20 21:55:01,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-20 21:55:01,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-20 21:55:01,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-20 21:55:01,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-20 21:55:01,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-20 21:55:01,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-20 21:55:01,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-20 21:55:01,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-20 21:55:01,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-20 21:55:01,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-20 21:55:01,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 21:55:01,017 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-20 21:55:01,019 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 21:55:01,020 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 21:55:01,038 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 21:55:01,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 96 transitions, 208 flow [2024-11-20 21:55:01,057 INFO L124 PetriNetUnfolderBase]: 21/147 cut-off events. [2024-11-20 21:55:01,058 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 21:55:01,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 147 events. 21/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 540 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2024-11-20 21:55:01,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 96 transitions, 208 flow [2024-11-20 21:55:01,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 96 transitions, 208 flow [2024-11-20 21:55:01,065 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:55:01,066 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;@6132073a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:55:01,066 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-20 21:55:01,068 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:55:01,069 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-20 21:55:01,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:55:01,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:01,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 21:55:01,069 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:55:01,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:01,070 INFO L85 PathProgramCache]: Analyzing trace with hash 430878547, now seen corresponding path program 1 times [2024-11-20 21:55:01,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:01,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123405882] [2024-11-20 21:55:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:01,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:55:01,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:01,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123405882] [2024-11-20 21:55:01,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123405882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:01,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:01,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:55:01,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516928984] [2024-11-20 21:55:01,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:01,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:01,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-11-20 21:55:01,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 208 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) [2024-11-20 21:55:01,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:01,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-11-20 21:55:01,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:55:02,278 INFO L124 PetriNetUnfolderBase]: 5541/10437 cut-off events. [2024-11-20 21:55:02,279 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-20 21:55:02,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19289 conditions, 10437 events. 5541/10437 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 80383 event pairs, 936 based on Foata normal form. 2148/11665 useless extension candidates. Maximal degree in co-relation 12950. Up to 6033 conditions per place. [2024-11-20 21:55:02,349 INFO L140 encePairwiseOnDemand]: 77/96 looper letters, 94 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-11-20 21:55:02,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 478 flow [2024-11-20 21:55:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:55:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:55:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-11-20 21:55:02,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-11-20 21:55:02,356 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 208 flow. Second operand 4 states and 277 transitions. [2024-11-20 21:55:02,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 478 flow [2024-11-20 21:55:02,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:55:02,362 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 186 flow [2024-11-20 21:55:02,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-20 21:55:02,363 INFO L277 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2024-11-20 21:55:02,364 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 186 flow [2024-11-20 21:55:02,364 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) [2024-11-20 21:55:02,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:02,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 21:55:02,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 21:55:02,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:55:02,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:02,366 INFO L85 PathProgramCache]: Analyzing trace with hash 472333514, now seen corresponding path program 1 times [2024-11-20 21:55:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:02,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633418050] [2024-11-20 21:55:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:02,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:55:02,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:02,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633418050] [2024-11-20 21:55:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633418050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:02,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:02,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:55:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233992533] [2024-11-20 21:55:02,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:02,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:02,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:02,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:02,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:02,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-11-20 21:55:02,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 186 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) [2024-11-20 21:55:02,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:02,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-11-20 21:55:02,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:55:03,674 INFO L124 PetriNetUnfolderBase]: 5527/11642 cut-off events. [2024-11-20 21:55:03,675 INFO L125 PetriNetUnfolderBase]: For 655/655 co-relation queries the response was YES. [2024-11-20 21:55:03,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21091 conditions, 11642 events. 5527/11642 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 97218 event pairs, 2600 based on Foata normal form. 15/10959 useless extension candidates. Maximal degree in co-relation 1452. Up to 8697 conditions per place. [2024-11-20 21:55:03,762 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 72 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2024-11-20 21:55:03,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 398 flow [2024-11-20 21:55:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:55:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:55:03,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-20 21:55:03,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5651041666666666 [2024-11-20 21:55:03,766 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 186 flow. Second operand 4 states and 217 transitions. [2024-11-20 21:55:03,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 398 flow [2024-11-20 21:55:03,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:55:03,774 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 200 flow [2024-11-20 21:55:03,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-11-20 21:55:03,775 INFO L277 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2024-11-20 21:55:03,777 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 200 flow [2024-11-20 21:55:03,777 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) [2024-11-20 21:55:03,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:03,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:55:03,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 21:55:03,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:55:03,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash -249697834, now seen corresponding path program 1 times [2024-11-20 21:55:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770926098] [2024-11-20 21:55:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:03,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:55:03,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:03,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770926098] [2024-11-20 21:55:03,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770926098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:03,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:03,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:55:03,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324512315] [2024-11-20 21:55:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:03,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:03,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 96 [2024-11-20 21:55:03,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:03,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:03,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 96 [2024-11-20 21:55:03,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:55:05,392 INFO L124 PetriNetUnfolderBase]: 7335/15582 cut-off events. [2024-11-20 21:55:05,393 INFO L125 PetriNetUnfolderBase]: For 578/792 co-relation queries the response was YES. [2024-11-20 21:55:05,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27915 conditions, 15582 events. 7335/15582 cut-off events. For 578/792 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 138225 event pairs, 2168 based on Foata normal form. 259/14667 useless extension candidates. Maximal degree in co-relation 27802. Up to 7118 conditions per place. [2024-11-20 21:55:05,506 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 132 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2024-11-20 21:55:05,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 180 transitions, 722 flow [2024-11-20 21:55:05,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:55:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:55:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2024-11-20 21:55:05,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-11-20 21:55:05,509 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 200 flow. Second operand 5 states and 325 transitions. [2024-11-20 21:55:05,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 180 transitions, 722 flow [2024-11-20 21:55:05,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 180 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:55:05,517 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 292 flow [2024-11-20 21:55:05,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2024-11-20 21:55:05,519 INFO L277 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2024-11-20 21:55:05,519 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 292 flow [2024-11-20 21:55:05,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:05,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:05,521 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 21:55:05,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 21:55:05,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:55:05,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash 948595171, now seen corresponding path program 1 times [2024-11-20 21:55:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:05,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909558307] [2024-11-20 21:55:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:55:05,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:05,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909558307] [2024-11-20 21:55:05,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909558307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:05,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:05,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:55:05,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174248745] [2024-11-20 21:55:05,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:05,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:05,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:05,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:05,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-11-20 21:55:05,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:05,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:05,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-11-20 21:55:05,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:55:06,922 INFO L124 PetriNetUnfolderBase]: 7271/14442 cut-off events. [2024-11-20 21:55:06,923 INFO L125 PetriNetUnfolderBase]: For 4389/4394 co-relation queries the response was YES. [2024-11-20 21:55:06,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30133 conditions, 14442 events. 7271/14442 cut-off events. For 4389/4394 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 121335 event pairs, 2005 based on Foata normal form. 0/13637 useless extension candidates. Maximal degree in co-relation 22661. Up to 10013 conditions per place. [2024-11-20 21:55:07,019 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 115 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-11-20 21:55:07,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 720 flow [2024-11-20 21:55:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:55:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:55:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-20 21:55:07,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2024-11-20 21:55:07,022 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 292 flow. Second operand 4 states and 239 transitions. [2024-11-20 21:55:07,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 720 flow [2024-11-20 21:55:07,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 720 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:55:07,035 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 308 flow [2024-11-20 21:55:07,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2024-11-20 21:55:07,037 INFO L277 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2024-11-20 21:55:07,037 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 308 flow [2024-11-20 21:55:07,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:07,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:07,038 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-20 21:55:07,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 21:55:07,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:55:07,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1066906557, now seen corresponding path program 1 times [2024-11-20 21:55:07,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:07,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004206794] [2024-11-20 21:55:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:55:07,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 21:55:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:55:07,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 21:55:07,089 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 21:55:07,089 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-20 21:55:07,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-20 21:55:07,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-20 21:55:07,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-20 21:55:07,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-20 21:55:07,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-20 21:55:07,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-20 21:55:07,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-20 21:55:07,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-20 21:55:07,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-20 21:55:07,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-20 21:55:07,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-20 21:55:07,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-20 21:55:07,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-20 21:55:07,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-20 21:55:07,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-20 21:55:07,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-20 21:55:07,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 21:55:07,091 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-20 21:55:07,092 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 21:55:07,096 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-20 21:55:07,125 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 21:55:07,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 130 transitions, 287 flow [2024-11-20 21:55:07,155 INFO L124 PetriNetUnfolderBase]: 34/235 cut-off events. [2024-11-20 21:55:07,155 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-20 21:55:07,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 235 events. 34/235 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 986 event pairs, 1 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 162. Up to 12 conditions per place. [2024-11-20 21:55:07,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 130 transitions, 287 flow [2024-11-20 21:55:07,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 130 transitions, 287 flow [2024-11-20 21:55:07,163 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:55:07,163 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;@6132073a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:55:07,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-20 21:55:07,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:55:07,169 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-20 21:55:07,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:55:07,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:07,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 21:55:07,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:55:07,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash 554968949, now seen corresponding path program 1 times [2024-11-20 21:55:07,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:07,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655247575] [2024-11-20 21:55:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:07,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:55:07,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:07,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655247575] [2024-11-20 21:55:07,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655247575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:07,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:07,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:55:07,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435790735] [2024-11-20 21:55:07,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:07,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:07,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-11-20 21:55:07,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 130 transitions, 287 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) [2024-11-20 21:55:07,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:07,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-11-20 21:55:07,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:55:21,020 INFO L124 PetriNetUnfolderBase]: 121220/195109 cut-off events. [2024-11-20 21:55:21,021 INFO L125 PetriNetUnfolderBase]: For 2009/2009 co-relation queries the response was YES. [2024-11-20 21:55:21,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364050 conditions, 195109 events. 121220/195109 cut-off events. For 2009/2009 co-relation queries the response was YES. Maximal size of possible extension queue 3778. Compared 1844940 event pairs, 20717 based on Foata normal form. 43359/223985 useless extension candidates. Maximal degree in co-relation 168087. Up to 115300 conditions per place. [2024-11-20 21:55:22,330 INFO L140 encePairwiseOnDemand]: 105/130 looper letters, 135 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2024-11-20 21:55:22,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 187 transitions, 679 flow [2024-11-20 21:55:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:55:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:55:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-11-20 21:55:22,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7461538461538462 [2024-11-20 21:55:22,332 INFO L175 Difference]: Start difference. First operand has 114 places, 130 transitions, 287 flow. Second operand 4 states and 388 transitions. [2024-11-20 21:55:22,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 187 transitions, 679 flow [2024-11-20 21:55:22,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 187 transitions, 679 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:55:22,340 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 253 flow [2024-11-20 21:55:22,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2024-11-20 21:55:22,342 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2024-11-20 21:55:22,342 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 253 flow [2024-11-20 21:55:22,343 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) [2024-11-20 21:55:22,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:22,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 21:55:22,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 21:55:22,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:55:22,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 24168810, now seen corresponding path program 1 times [2024-11-20 21:55:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:22,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300182287] [2024-11-20 21:55:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:22,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:55:22,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:22,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300182287] [2024-11-20 21:55:22,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300182287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:22,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:22,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:55:22,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380498281] [2024-11-20 21:55:22,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:22,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:22,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:22,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:22,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:22,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-11-20 21:55:22,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 253 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) [2024-11-20 21:55:22,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:22,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-11-20 21:55:22,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:55:37,038 INFO L124 PetriNetUnfolderBase]: 121206/220276 cut-off events. [2024-11-20 21:55:37,039 INFO L125 PetriNetUnfolderBase]: For 10864/10864 co-relation queries the response was YES. [2024-11-20 21:55:37,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398046 conditions, 220276 events. 121206/220276 cut-off events. For 10864/10864 co-relation queries the response was YES. Maximal size of possible extension queue 4376. Compared 2365475 event pairs, 98316 based on Foata normal form. 15/207437 useless extension candidates. Maximal degree in co-relation 114524. Up to 167356 conditions per place. [2024-11-20 21:55:38,732 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 87 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-11-20 21:55:38,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 138 transitions, 495 flow [2024-11-20 21:55:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:55:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:55:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2024-11-20 21:55:38,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2024-11-20 21:55:38,734 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 253 flow. Second operand 4 states and 284 transitions. [2024-11-20 21:55:38,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 138 transitions, 495 flow [2024-11-20 21:55:38,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 138 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:55:38,752 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 267 flow [2024-11-20 21:55:38,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2024-11-20 21:55:38,753 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 4 predicate places. [2024-11-20 21:55:38,754 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 267 flow [2024-11-20 21:55:38,754 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) [2024-11-20 21:55:38,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:55:38,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:55:38,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 21:55:38,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:55:38,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:55:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1916149558, now seen corresponding path program 1 times [2024-11-20 21:55:38,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:55:38,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517790396] [2024-11-20 21:55:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:55:38,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:55:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:55:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:55:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:55:38,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517790396] [2024-11-20 21:55:38,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517790396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:55:38,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:55:38,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:55:38,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472881581] [2024-11-20 21:55:38,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:55:38,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:55:38,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:55:38,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:55:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:55:38,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 130 [2024-11-20 21:55:38,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:55:38,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:55:38,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 130 [2024-11-20 21:55:38,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand