./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:51:57,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:51:57,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:51:57,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:51:57,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:51:57,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:51:57,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:51:57,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:51:57,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:51:57,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:51:57,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:51:57,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:51:57,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:51:57,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:51:57,641 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:51:57,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:51:57,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:51:57,643 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:51:57,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:51:57,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:51:57,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:51:57,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:51:57,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:51:57,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:51:57,649 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:51:57,649 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:51:57,649 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:51:57,649 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:51:57,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:51:57,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:51:57,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:51:57,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:51:57,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:51:57,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:51:57,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:51:57,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:51:57,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:51:57,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:51:57,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:51:57,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:51:57,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:51:57,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:51:57,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:51:57,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:51:57,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2024-11-23 01:51:57,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:51:57,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:51:57,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:51:57,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:51:57,979 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:51:57,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-11-23 01:51:59,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:51:59,711 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:51:59,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-11-23 01:51:59,725 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351592863/fbf0273e68d9459bb4f95c82e2fef726/FLAG8a7e3e91c [2024-11-23 01:52:00,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351592863/fbf0273e68d9459bb4f95c82e2fef726 [2024-11-23 01:52:00,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:52:00,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:52:00,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:52:00,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:52:00,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:52:00,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a1af4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00, skipping insertion in model container [2024-11-23 01:52:00,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,089 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:52:00,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:52:00,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:52:00,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:52:00,574 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:52:00,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00 WrapperNode [2024-11-23 01:52:00,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:52:00,577 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:52:00,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:52:00,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:52:00,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,638 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2024-11-23 01:52:00,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:52:00,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:52:00,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:52:00,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:52:00,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,678 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 5, 6, 5]. 33 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5]. The 2 writes are split as follows [0, 0, 2, 0]. [2024-11-23 01:52:00,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:52:00,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:52:00,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:52:00,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:52:00,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (1/1) ... [2024-11-23 01:52:00,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:52:00,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:00,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:52:00,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:52:00,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:52:00,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:52:00,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:52:00,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 01:52:00,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:52:00,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:52:00,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:52:00,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 01:52:00,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:52:00,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:52:00,818 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-23 01:52:00,818 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-23 01:52:00,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:52:00,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:52:00,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:52:00,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 01:52:00,818 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:52:00,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:52:00,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:52:00,821 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:52:00,962 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:52:00,965 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:52:01,213 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:52:01,213 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:52:01,432 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:52:01,432 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-23 01:52:01,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:01 BoogieIcfgContainer [2024-11-23 01:52:01,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:52:01,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:52:01,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:52:01,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:52:01,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:00" (1/3) ... [2024-11-23 01:52:01,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c32df4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:01, skipping insertion in model container [2024-11-23 01:52:01,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:00" (2/3) ... [2024-11-23 01:52:01,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c32df4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:01, skipping insertion in model container [2024-11-23 01:52:01,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:01" (3/3) ... [2024-11-23 01:52:01,443 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2024-11-23 01:52:01,459 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:52:01,459 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-23 01:52:01,459 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:52:01,496 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 01:52:01,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 52 transitions, 108 flow [2024-11-23 01:52:01,567 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2024-11-23 01:52:01,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:01,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 10/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 197 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2024-11-23 01:52:01,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 52 transitions, 108 flow [2024-11-23 01:52:01,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 52 transitions, 108 flow [2024-11-23 01:52:01,588 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:52:01,593 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;@1641220b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:52:01,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-23 01:52:01,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:52:01,598 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-23 01:52:01,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:01,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:01,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:52:01,599 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-23 01:52:01,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:01,605 INFO L85 PathProgramCache]: Analyzing trace with hash 329751728, now seen corresponding path program 1 times [2024-11-23 01:52:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:01,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136142703] [2024-11-23 01:52:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:01,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:01,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136142703] [2024-11-23 01:52:01,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136142703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:01,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:01,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:01,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931757448] [2024-11-23 01:52:01,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:01,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:01,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:01,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:01,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-23 01:52:01,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 52 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:01,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:01,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-23 01:52:01,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:02,186 INFO L124 PetriNetUnfolderBase]: 121/364 cut-off events. [2024-11-23 01:52:02,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:02,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 364 events. 121/364 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1793 event pairs, 22 based on Foata normal form. 72/402 useless extension candidates. Maximal degree in co-relation 612. Up to 169 conditions per place. [2024-11-23 01:52:02,192 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 38 selfloop transitions, 4 changer transitions 4/65 dead transitions. [2024-11-23 01:52:02,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 226 flow [2024-11-23 01:52:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-23 01:52:02,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-23 01:52:02,207 INFO L175 Difference]: Start difference. First operand has 47 places, 52 transitions, 108 flow. Second operand 4 states and 143 transitions. [2024-11-23 01:52:02,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 226 flow [2024-11-23 01:52:02,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:02,212 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 98 flow [2024-11-23 01:52:02,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-23 01:52:02,222 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-23 01:52:02,222 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 98 flow [2024-11-23 01:52:02,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:02,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:02,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:52:02,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:52:02,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-23 01:52:02,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1632369309, now seen corresponding path program 1 times [2024-11-23 01:52:02,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:02,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169052121] [2024-11-23 01:52:02,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:02,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:02,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169052121] [2024-11-23 01:52:02,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169052121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:02,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:02,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:02,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614890387] [2024-11-23 01:52:02,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:02,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:02,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:02,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:02,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-23 01:52:02,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:02,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:02,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-23 01:52:02,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:02,547 INFO L124 PetriNetUnfolderBase]: 110/320 cut-off events. [2024-11-23 01:52:02,550 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-23 01:52:02,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 320 events. 110/320 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1498 event pairs, 0 based on Foata normal form. 13/327 useless extension candidates. Maximal degree in co-relation 582. Up to 208 conditions per place. [2024-11-23 01:52:02,552 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 43 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-11-23 01:52:02,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 234 flow [2024-11-23 01:52:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-23 01:52:02,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-11-23 01:52:02,558 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 98 flow. Second operand 4 states and 124 transitions. [2024-11-23 01:52:02,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 234 flow [2024-11-23 01:52:02,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:52:02,562 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 98 flow [2024-11-23 01:52:02,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-23 01:52:02,563 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-23 01:52:02,563 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 98 flow [2024-11-23 01:52:02,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:02,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:02,564 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:02,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:52:02,566 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-23 01:52:02,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1043853526, now seen corresponding path program 1 times [2024-11-23 01:52:02,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:02,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613097549] [2024-11-23 01:52:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:02,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:02,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 01:52:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:02,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 01:52:02,668 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 01:52:02,670 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-23 01:52:02,672 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-23 01:52:02,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-23 01:52:02,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-23 01:52:02,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-23 01:52:02,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-23 01:52:02,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-23 01:52:02,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-23 01:52:02,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-23 01:52:02,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-23 01:52:02,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-23 01:52:02,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:52:02,678 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-23 01:52:02,682 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 01:52:02,683 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-23 01:52:02,718 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 01:52:02,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 84 transitions, 178 flow [2024-11-23 01:52:02,742 INFO L124 PetriNetUnfolderBase]: 18/115 cut-off events. [2024-11-23 01:52:02,742 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:52:02,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 115 events. 18/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 411 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2024-11-23 01:52:02,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 84 transitions, 178 flow [2024-11-23 01:52:02,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 84 transitions, 178 flow [2024-11-23 01:52:02,747 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:52:02,748 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1641220b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:52:02,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-23 01:52:02,750 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:52:02,751 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-23 01:52:02,751 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:02,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:02,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:52:02,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-23 01:52:02,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash 409943139, now seen corresponding path program 1 times [2024-11-23 01:52:02,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:02,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638230032] [2024-11-23 01:52:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:02,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638230032] [2024-11-23 01:52:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638230032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:02,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:02,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764393880] [2024-11-23 01:52:02,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:02,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:02,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:02,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 84 [2024-11-23 01:52:02,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:02,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:02,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 84 [2024-11-23 01:52:02,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:03,599 INFO L124 PetriNetUnfolderBase]: 3157/6383 cut-off events. [2024-11-23 01:52:03,599 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-23 01:52:03,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11463 conditions, 6383 events. 3157/6383 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 50443 event pairs, 657 based on Foata normal form. 1482/7360 useless extension candidates. Maximal degree in co-relation 8222. Up to 3025 conditions per place. [2024-11-23 01:52:03,649 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 76 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2024-11-23 01:52:03,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 113 transitions, 396 flow [2024-11-23 01:52:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-23 01:52:03,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7470238095238095 [2024-11-23 01:52:03,657 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 178 flow. Second operand 4 states and 251 transitions. [2024-11-23 01:52:03,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 113 transitions, 396 flow [2024-11-23 01:52:03,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:03,659 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 156 flow [2024-11-23 01:52:03,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-23 01:52:03,662 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-23 01:52:03,663 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 156 flow [2024-11-23 01:52:03,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:03,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:03,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:52:03,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:52:03,664 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-23 01:52:03,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -176664162, now seen corresponding path program 1 times [2024-11-23 01:52:03,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:03,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413713176] [2024-11-23 01:52:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:03,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:03,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:03,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413713176] [2024-11-23 01:52:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413713176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:03,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:03,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138645953] [2024-11-23 01:52:03,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:03,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:03,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:03,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 84 [2024-11-23 01:52:03,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:03,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:03,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 84 [2024-11-23 01:52:03,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:04,471 INFO L124 PetriNetUnfolderBase]: 3146/6834 cut-off events. [2024-11-23 01:52:04,471 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-11-23 01:52:04,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12354 conditions, 6834 events. 3146/6834 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 56460 event pairs, 1452 based on Foata normal form. 13/6533 useless extension candidates. Maximal degree in co-relation 999. Up to 4972 conditions per place. [2024-11-23 01:52:04,511 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 58 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-23 01:52:04,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 332 flow [2024-11-23 01:52:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-23 01:52:04,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-11-23 01:52:04,513 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 156 flow. Second operand 4 states and 195 transitions. [2024-11-23 01:52:04,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 332 flow [2024-11-23 01:52:04,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 320 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:52:04,517 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 170 flow [2024-11-23 01:52:04,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-11-23 01:52:04,518 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-23 01:52:04,518 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 170 flow [2024-11-23 01:52:04,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:04,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:04,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:04,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:52:04,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-23 01:52:04,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1940909862, now seen corresponding path program 1 times [2024-11-23 01:52:04,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:04,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503404105] [2024-11-23 01:52:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:04,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:04,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503404105] [2024-11-23 01:52:04,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503404105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:04,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:04,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:04,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142018575] [2024-11-23 01:52:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:04,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:04,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:04,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-23 01:52:04,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:04,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:04,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-23 01:52:04,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:05,331 INFO L124 PetriNetUnfolderBase]: 3033/6476 cut-off events. [2024-11-23 01:52:05,332 INFO L125 PetriNetUnfolderBase]: For 394/566 co-relation queries the response was YES. [2024-11-23 01:52:05,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11737 conditions, 6476 events. 3033/6476 cut-off events. For 394/566 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 51684 event pairs, 949 based on Foata normal form. 141/6280 useless extension candidates. Maximal degree in co-relation 11636. Up to 4227 conditions per place. [2024-11-23 01:52:05,374 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 82 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2024-11-23 01:52:05,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 476 flow [2024-11-23 01:52:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:52:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:52:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 259 transitions. [2024-11-23 01:52:05,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-23 01:52:05,376 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 170 flow. Second operand 5 states and 259 transitions. [2024-11-23 01:52:05,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 476 flow [2024-11-23 01:52:05,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:52:05,380 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 212 flow [2024-11-23 01:52:05,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-11-23 01:52:05,381 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-23 01:52:05,383 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 212 flow [2024-11-23 01:52:05,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:05,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:05,383 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:52:05,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:52:05,384 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-23 01:52:05,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:05,384 INFO L85 PathProgramCache]: Analyzing trace with hash 325381133, now seen corresponding path program 1 times [2024-11-23 01:52:05,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:05,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174616414] [2024-11-23 01:52:05,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:05,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:52:05,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:05,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174616414] [2024-11-23 01:52:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174616414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:52:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754012295] [2024-11-23 01:52:05,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:05,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:05,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:05,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:05,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 84 [2024-11-23 01:52:05,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:05,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:05,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 84 [2024-11-23 01:52:05,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:06,136 INFO L124 PetriNetUnfolderBase]: 3039/5896 cut-off events. [2024-11-23 01:52:06,136 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-11-23 01:52:06,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12103 conditions, 5896 events. 3039/5896 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 44636 event pairs, 253 based on Foata normal form. 0/5793 useless extension candidates. Maximal degree in co-relation 11221. Up to 3633 conditions per place. [2024-11-23 01:52:06,169 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 91 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2024-11-23 01:52:06,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 130 transitions, 558 flow [2024-11-23 01:52:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-23 01:52:06,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339285714285714 [2024-11-23 01:52:06,172 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 212 flow. Second operand 4 states and 213 transitions. [2024-11-23 01:52:06,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 130 transitions, 558 flow [2024-11-23 01:52:06,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:06,178 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 228 flow [2024-11-23 01:52:06,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-11-23 01:52:06,179 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2024-11-23 01:52:06,179 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 228 flow [2024-11-23 01:52:06,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:06,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:06,180 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-23 01:52:06,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:52:06,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-23 01:52:06,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash -841330459, now seen corresponding path program 1 times [2024-11-23 01:52:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538596459] [2024-11-23 01:52:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:06,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:06,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 01:52:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:06,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 01:52:06,210 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 01:52:06,211 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-23 01:52:06,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-11-23 01:52:06,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-11-23 01:52:06,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-11-23 01:52:06,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-11-23 01:52:06,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-11-23 01:52:06,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-11-23 01:52:06,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-11-23 01:52:06,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-11-23 01:52:06,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-11-23 01:52:06,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-11-23 01:52:06,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-11-23 01:52:06,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-11-23 01:52:06,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-11-23 01:52:06,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-11-23 01:52:06,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 01:52:06,214 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-23 01:52:06,215 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 01:52:06,215 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-23 01:52:06,243 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 01:52:06,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 116 transitions, 250 flow [2024-11-23 01:52:06,269 INFO L124 PetriNetUnfolderBase]: 26/165 cut-off events. [2024-11-23 01:52:06,269 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-23 01:52:06,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 26/165 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 626 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 126. Up to 8 conditions per place. [2024-11-23 01:52:06,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 116 transitions, 250 flow [2024-11-23 01:52:06,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 116 transitions, 250 flow [2024-11-23 01:52:06,273 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:52:06,278 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;@1641220b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:52:06,278 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-23 01:52:06,280 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:52:06,282 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-23 01:52:06,282 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:06,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:06,283 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:52:06,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-23 01:52:06,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash 520672310, now seen corresponding path program 1 times [2024-11-23 01:52:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:06,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647627441] [2024-11-23 01:52:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:06,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:06,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647627441] [2024-11-23 01:52:06,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647627441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:06,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:06,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:06,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960157322] [2024-11-23 01:52:06,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:06,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:06,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:06,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:06,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:06,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 116 [2024-11-23 01:52:06,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 116 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:06,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:06,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 116 [2024-11-23 01:52:06,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:14,254 INFO L124 PetriNetUnfolderBase]: 58597/97332 cut-off events. [2024-11-23 01:52:14,254 INFO L125 PetriNetUnfolderBase]: For 930/930 co-relation queries the response was YES. [2024-11-23 01:52:14,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179165 conditions, 97332 events. 58597/97332 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 915332 event pairs, 12897 based on Foata normal form. 25190/116265 useless extension candidates. Maximal degree in co-relation 112706. Up to 48385 conditions per place. [2024-11-23 01:52:15,120 INFO L140 encePairwiseOnDemand]: 91/116 looper letters, 110 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2024-11-23 01:52:15,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 161 transitions, 568 flow [2024-11-23 01:52:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2024-11-23 01:52:15,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7737068965517241 [2024-11-23 01:52:15,124 INFO L175 Difference]: Start difference. First operand has 103 places, 116 transitions, 250 flow. Second operand 4 states and 359 transitions. [2024-11-23 01:52:15,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 161 transitions, 568 flow [2024-11-23 01:52:15,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 161 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:15,132 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 214 flow [2024-11-23 01:52:15,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-11-23 01:52:15,133 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2024-11-23 01:52:15,134 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 214 flow [2024-11-23 01:52:15,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:15,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:15,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:52:15,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:52:15,135 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-23 01:52:15,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:15,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1039027041, now seen corresponding path program 1 times [2024-11-23 01:52:15,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:15,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221898902] [2024-11-23 01:52:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:15,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:15,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221898902] [2024-11-23 01:52:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221898902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:15,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:15,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784448904] [2024-11-23 01:52:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:15,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:15,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:15,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:15,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 116 [2024-11-23 01:52:15,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:15,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:15,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 116 [2024-11-23 01:52:15,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:22,622 INFO L124 PetriNetUnfolderBase]: 58586/103326 cut-off events. [2024-11-23 01:52:22,622 INFO L125 PetriNetUnfolderBase]: For 6139/6139 co-relation queries the response was YES. [2024-11-23 01:52:22,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190639 conditions, 103326 events. 58586/103326 cut-off events. For 6139/6139 co-relation queries the response was YES. Maximal size of possible extension queue 2535. Compared 1026125 event pairs, 41644 based on Foata normal form. 13/98839 useless extension candidates. Maximal degree in co-relation 42699. Up to 81148 conditions per place. [2024-11-23 01:52:23,251 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 70 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-23 01:52:23,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 120 transitions, 414 flow [2024-11-23 01:52:23,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:23,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-11-23 01:52:23,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5668103448275862 [2024-11-23 01:52:23,254 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 214 flow. Second operand 4 states and 263 transitions. [2024-11-23 01:52:23,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 120 transitions, 414 flow [2024-11-23 01:52:23,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 402 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:52:23,262 INFO L231 Difference]: Finished difference. Result has 107 places, 97 transitions, 228 flow [2024-11-23 01:52:23,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=97} [2024-11-23 01:52:23,263 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2024-11-23 01:52:23,263 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 97 transitions, 228 flow [2024-11-23 01:52:23,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:23,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:23,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:23,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 01:52:23,264 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-23 01:52:23,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash 349841753, now seen corresponding path program 1 times [2024-11-23 01:52:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:23,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802714603] [2024-11-23 01:52:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:23,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802714603] [2024-11-23 01:52:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802714603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:23,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:23,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503339083] [2024-11-23 01:52:23,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:23,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:23,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:23,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 116 [2024-11-23 01:52:23,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 97 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:23,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:23,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 116 [2024-11-23 01:52:23,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:31,013 INFO L124 PetriNetUnfolderBase]: 59409/103310 cut-off events. [2024-11-23 01:52:31,013 INFO L125 PetriNetUnfolderBase]: For 5131/7389 co-relation queries the response was YES. [2024-11-23 01:52:31,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190814 conditions, 103310 events. 59409/103310 cut-off events. For 5131/7389 co-relation queries the response was YES. Maximal size of possible extension queue 2604. Compared 1009366 event pairs, 23553 based on Foata normal form. 1580/99848 useless extension candidates. Maximal degree in co-relation 190712. Up to 76131 conditions per place. [2024-11-23 01:52:31,616 INFO L140 encePairwiseOnDemand]: 109/116 looper letters, 118 selfloop transitions, 8 changer transitions 0/174 dead transitions. [2024-11-23 01:52:31,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 174 transitions, 677 flow [2024-11-23 01:52:31,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:52:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:52:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2024-11-23 01:52:31,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6327586206896552 [2024-11-23 01:52:31,618 INFO L175 Difference]: Start difference. First operand has 107 places, 97 transitions, 228 flow. Second operand 5 states and 367 transitions. [2024-11-23 01:52:31,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 174 transitions, 677 flow [2024-11-23 01:52:31,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 174 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:52:31,625 INFO L231 Difference]: Finished difference. Result has 113 places, 104 transitions, 287 flow [2024-11-23 01:52:31,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=113, PETRI_TRANSITIONS=104} [2024-11-23 01:52:31,626 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 10 predicate places. [2024-11-23 01:52:31,626 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 104 transitions, 287 flow [2024-11-23 01:52:31,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:31,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:31,627 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:52:31,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:52:31,627 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-23 01:52:31,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash 915242145, now seen corresponding path program 1 times [2024-11-23 01:52:31,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:31,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717284527] [2024-11-23 01:52:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:31,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:52:31,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717284527] [2024-11-23 01:52:31,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717284527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:31,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:31,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:52:31,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326010656] [2024-11-23 01:52:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:31,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:31,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:31,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:31,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:31,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 116 [2024-11-23 01:52:31,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 104 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) [2024-11-23 01:52:31,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:31,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 116 [2024-11-23 01:52:31,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:39,206 INFO L124 PetriNetUnfolderBase]: 60225/97246 cut-off events. [2024-11-23 01:52:39,206 INFO L125 PetriNetUnfolderBase]: For 21110/21110 co-relation queries the response was YES. [2024-11-23 01:52:39,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202870 conditions, 97246 events. 60225/97246 cut-off events. For 21110/21110 co-relation queries the response was YES. Maximal size of possible extension queue 2410. Compared 895726 event pairs, 8573 based on Foata normal form. 0/95886 useless extension candidates. Maximal degree in co-relation 176567. Up to 62449 conditions per place. [2024-11-23 01:52:39,816 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 131 selfloop transitions, 6 changer transitions 0/184 dead transitions. [2024-11-23 01:52:39,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 184 transitions, 791 flow [2024-11-23 01:52:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-11-23 01:52:39,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530172413793104 [2024-11-23 01:52:39,818 INFO L175 Difference]: Start difference. First operand has 113 places, 104 transitions, 287 flow. Second operand 4 states and 303 transitions. [2024-11-23 01:52:39,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 184 transitions, 791 flow [2024-11-23 01:52:39,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 184 transitions, 791 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:39,828 INFO L231 Difference]: Finished difference. Result has 116 places, 104 transitions, 303 flow [2024-11-23 01:52:39,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=116, PETRI_TRANSITIONS=104} [2024-11-23 01:52:39,829 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 13 predicate places. [2024-11-23 01:52:39,829 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 104 transitions, 303 flow [2024-11-23 01:52:39,829 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) [2024-11-23 01:52:39,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:39,830 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:39,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 01:52:39,830 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-23 01:52:39,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:39,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1724350627, now seen corresponding path program 1 times [2024-11-23 01:52:39,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:39,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481281562] [2024-11-23 01:52:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:39,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:52:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:40,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481281562] [2024-11-23 01:52:40,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481281562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:40,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:40,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366092183] [2024-11-23 01:52:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:40,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:40,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:40,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:40,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:40,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 116 [2024-11-23 01:52:40,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 104 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:40,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:40,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 116 [2024-11-23 01:52:40,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand