./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_21-deref_read_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:38:49,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:38:49,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:38:49,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:38:49,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:38:49,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:38:49,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:38:49,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:38:49,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:38:49,564 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:38:49,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:38:49,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:38:49,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:38:49,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:38:49,569 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:38:49,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:38:49,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:38:49,570 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:38:49,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:38:49,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:38:49,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:38:49,571 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:38:49,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:38:49,572 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:38:49,572 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:38:49,573 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:38:49,573 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:38:49,573 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:38:49,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:38:49,574 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:38:49,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:38:49,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:38:49,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:38:49,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:38:49,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:38:49,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:38:49,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:38:49,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:38:49,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:38:49,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:38:49,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:38:49,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:38:49,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:38:49,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:38:49,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2024-11-12 20:38:49,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:38:49,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:38:49,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:38:49,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:38:49,882 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:38:49,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2024-11-12 20:38:51,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:38:51,625 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:38:51,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2024-11-12 20:38:51,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d68f3407/679bb7ce6daa478b87def4c5691637f6/FLAG322c8ad8c [2024-11-12 20:38:51,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d68f3407/679bb7ce6daa478b87def4c5691637f6 [2024-11-12 20:38:51,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:38:51,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:38:51,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:38:51,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:38:51,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:38:51,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:38:51" (1/1) ... [2024-11-12 20:38:51,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9ce26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:51, skipping insertion in model container [2024-11-12 20:38:51,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:38:51" (1/1) ... [2024-11-12 20:38:52,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:38:52,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:38:52,436 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:38:52,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:38:52,534 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:38:52,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52 WrapperNode [2024-11-12 20:38:52,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:38:52,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:38:52,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:38:52,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:38:52,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,583 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-12 20:38:52,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:38:52,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:38:52,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:38:52,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:38:52,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,621 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]. [2024-11-12 20:38:52,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:38:52,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:38:52,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:38:52,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:38:52,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (1/1) ... [2024-11-12 20:38:52,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:38:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:38:52,676 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) [2024-11-12 20:38:52,679 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 [2024-11-12 20:38:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:38:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:38:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 20:38:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 20:38:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:38:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:38:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 20:38:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 20:38:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:38:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:38:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-12 20:38:52,727 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-12 20:38:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:38:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:38:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 20:38:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 20:38:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:38:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:38:52,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:38:52,730 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:38:52,846 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:38:52,848 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:38:53,078 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:38:53,079 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:38:53,284 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:38:53,284 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-12 20:38:53,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:38:53 BoogieIcfgContainer [2024-11-12 20:38:53,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:38:53,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:38:53,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:38:53,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:38:53,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:38:51" (1/3) ... [2024-11-12 20:38:53,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c50e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:38:53, skipping insertion in model container [2024-11-12 20:38:53,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:38:52" (2/3) ... [2024-11-12 20:38:53,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c50e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:38:53, skipping insertion in model container [2024-11-12 20:38:53,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:38:53" (3/3) ... [2024-11-12 20:38:53,293 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2024-11-12 20:38:53,311 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:38:53,311 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-12 20:38:53,311 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:38:53,353 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:38:53,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 49 transitions, 102 flow [2024-11-12 20:38:53,422 INFO L124 PetriNetUnfolderBase]: 10/59 cut-off events. [2024-11-12 20:38:53,423 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:38:53,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 10/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2024-11-12 20:38:53,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 49 transitions, 102 flow [2024-11-12 20:38:53,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 49 transitions, 102 flow [2024-11-12 20:38:53,441 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:38:53,448 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;@1bfe686d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:38:53,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-12 20:38:53,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:38:53,453 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-12 20:38:53,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:38:53,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:53,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:38:53,455 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)] === [2024-11-12 20:38:53,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash 316449182, now seen corresponding path program 1 times [2024-11-12 20:38:53,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:53,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517414516] [2024-11-12 20:38:53,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:53,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:38:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:38:53,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:38:53,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517414516] [2024-11-12 20:38:53,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517414516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:38:53,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:38:53,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:38:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313780291] [2024-11-12 20:38:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:38:53,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:38:53,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:38:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:38:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:38:53,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-12 20:38:53,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-12 20:38:53,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:38:53,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-12 20:38:53,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:38:54,081 INFO L124 PetriNetUnfolderBase]: 88/260 cut-off events. [2024-11-12 20:38:54,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:38:54,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 260 events. 88/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1221 event pairs, 0 based on Foata normal form. 60/306 useless extension candidates. Maximal degree in co-relation 440. Up to 162 conditions per place. [2024-11-12 20:38:54,089 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 41 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-12 20:38:54,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 216 flow [2024-11-12 20:38:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:38:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:38:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-12 20:38:54,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-11-12 20:38:54,108 INFO L175 Difference]: Start difference. First operand has 44 places, 49 transitions, 102 flow. Second operand 4 states and 139 transitions. [2024-11-12 20:38:54,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 216 flow [2024-11-12 20:38:54,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:38:54,115 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 92 flow [2024-11-12 20:38:54,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-11-12 20:38:54,125 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2024-11-12 20:38:54,126 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 92 flow [2024-11-12 20:38:54,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-12 20:38:54,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:54,126 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:38:54,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:38:54,127 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-12 20:38:54,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash -115315048, now seen corresponding path program 1 times [2024-11-12 20:38:54,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:54,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296325664] [2024-11-12 20:38:54,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:54,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:38:54,150 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:38:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:38:54,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:38:54,185 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:38:54,187 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-12 20:38:54,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-12 20:38:54,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-12 20:38:54,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-12 20:38:54,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-12 20:38:54,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-12 20:38:54,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-12 20:38:54,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-12 20:38:54,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-12 20:38:54,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-12 20:38:54,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-12 20:38:54,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:38:54,191 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 20:38:54,193 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:38:54,196 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 20:38:54,223 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:38:54,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 81 transitions, 172 flow [2024-11-12 20:38:54,243 INFO L124 PetriNetUnfolderBase]: 18/106 cut-off events. [2024-11-12 20:38:54,244 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:38:54,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 18/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 344 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2024-11-12 20:38:54,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 81 transitions, 172 flow [2024-11-12 20:38:54,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 81 transitions, 172 flow [2024-11-12 20:38:54,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:38:54,249 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;@1bfe686d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:38:54,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-12 20:38:54,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:38:54,253 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-12 20:38:54,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:38:54,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:54,253 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:38:54,253 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)] === [2024-11-12 20:38:54,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash 393777678, now seen corresponding path program 1 times [2024-11-12 20:38:54,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:54,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848364492] [2024-11-12 20:38:54,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:54,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:38:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:38:54,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:38:54,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848364492] [2024-11-12 20:38:54,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848364492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:38:54,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:38:54,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:38:54,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060801855] [2024-11-12 20:38:54,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:38:54,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:38:54,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:38:54,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:38:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:38:54,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-12 20:38:54,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 81 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-12 20:38:54,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:38:54,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-12 20:38:54,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:38:55,211 INFO L124 PetriNetUnfolderBase]: 2860/5993 cut-off events. [2024-11-12 20:38:55,212 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-12 20:38:55,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10589 conditions, 5993 events. 2860/5993 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 47342 event pairs, 1596 based on Foata normal form. 1239/6669 useless extension candidates. Maximal degree in co-relation 2143. Up to 4518 conditions per place. [2024-11-12 20:38:55,255 INFO L140 encePairwiseOnDemand]: 61/81 looper letters, 57 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-12 20:38:55,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 314 flow [2024-11-12 20:38:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:38:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:38:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-12 20:38:55,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-11-12 20:38:55,260 INFO L175 Difference]: Start difference. First operand has 72 places, 81 transitions, 172 flow. Second operand 4 states and 217 transitions. [2024-11-12 20:38:55,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 314 flow [2024-11-12 20:38:55,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:38:55,263 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 168 flow [2024-11-12 20:38:55,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-12 20:38:55,264 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2024-11-12 20:38:55,264 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 168 flow [2024-11-12 20:38:55,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-12 20:38:55,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:55,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:38:55,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:38:55,265 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:38:55,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash -551578820, now seen corresponding path program 1 times [2024-11-12 20:38:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:55,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820483620] [2024-11-12 20:38:55,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:55,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:38:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:38:55,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:38:55,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820483620] [2024-11-12 20:38:55,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820483620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:38:55,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:38:55,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:38:55,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020586370] [2024-11-12 20:38:55,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:38:55,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:38:55,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:38:55,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:38:55,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:38:55,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-12 20:38:55,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-12 20:38:55,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:38:55,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-12 20:38:55,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:38:56,018 INFO L124 PetriNetUnfolderBase]: 2393/5170 cut-off events. [2024-11-12 20:38:56,018 INFO L125 PetriNetUnfolderBase]: For 394/727 co-relation queries the response was YES. [2024-11-12 20:38:56,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9434 conditions, 5170 events. 2393/5170 cut-off events. For 394/727 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 40087 event pairs, 757 based on Foata normal form. 115/5011 useless extension candidates. Maximal degree in co-relation 9333. Up to 3353 conditions per place. [2024-11-12 20:38:56,052 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 74 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-11-12 20:38:56,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 114 transitions, 446 flow [2024-11-12 20:38:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:38:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:38:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-12 20:38:56,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-11-12 20:38:56,055 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 168 flow. Second operand 5 states and 246 transitions. [2024-11-12 20:38:56,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 114 transitions, 446 flow [2024-11-12 20:38:56,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:38:56,059 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 210 flow [2024-11-12 20:38:56,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-12 20:38:56,060 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2024-11-12 20:38:56,061 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 210 flow [2024-11-12 20:38:56,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-12 20:38:56,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:56,061 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:38:56,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:38:56,062 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-12 20:38:56,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:56,062 INFO L85 PathProgramCache]: Analyzing trace with hash 634657270, now seen corresponding path program 1 times [2024-11-12 20:38:56,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:56,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837206767] [2024-11-12 20:38:56,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:56,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:38:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:38:56,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:38:56,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837206767] [2024-11-12 20:38:56,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837206767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:38:56,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:38:56,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:38:56,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078541761] [2024-11-12 20:38:56,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:38:56,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:38:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:38:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:38:56,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:38:56,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-12 20:38:56,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 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) [2024-11-12 20:38:56,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:38:56,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-12 20:38:56,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:38:56,955 INFO L124 PetriNetUnfolderBase]: 2738/5566 cut-off events. [2024-11-12 20:38:56,955 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2024-11-12 20:38:56,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11416 conditions, 5566 events. 2738/5566 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 43556 event pairs, 303 based on Foata normal form. 152/5396 useless extension candidates. Maximal degree in co-relation 10524. Up to 2271 conditions per place. [2024-11-12 20:38:57,006 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 112 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-11-12 20:38:57,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 150 transitions, 656 flow [2024-11-12 20:38:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:38:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:38:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 296 transitions. [2024-11-12 20:38:57,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6090534979423868 [2024-11-12 20:38:57,009 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 210 flow. Second operand 6 states and 296 transitions. [2024-11-12 20:38:57,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 150 transitions, 656 flow [2024-11-12 20:38:57,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 150 transitions, 656 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:38:57,019 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 218 flow [2024-11-12 20:38:57,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-11-12 20:38:57,021 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2024-11-12 20:38:57,022 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 218 flow [2024-11-12 20:38:57,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 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) [2024-11-12 20:38:57,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:57,023 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 20:38:57,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:38:57,023 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)] === [2024-11-12 20:38:57,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1800460708, now seen corresponding path program 1 times [2024-11-12 20:38:57,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267806990] [2024-11-12 20:38:57,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:38:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:38:57,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:38:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267806990] [2024-11-12 20:38:57,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267806990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:38:57,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:38:57,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:38:57,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288620744] [2024-11-12 20:38:57,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:38:57,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:38:57,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:38:57,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:38:57,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:38:57,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-12 20:38:57,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 218 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) [2024-11-12 20:38:57,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:38:57,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-12 20:38:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:38:57,622 INFO L124 PetriNetUnfolderBase]: 2459/4804 cut-off events. [2024-11-12 20:38:57,623 INFO L125 PetriNetUnfolderBase]: For 1738/1738 co-relation queries the response was YES. [2024-11-12 20:38:57,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10441 conditions, 4804 events. 2459/4804 cut-off events. For 1738/1738 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 35753 event pairs, 397 based on Foata normal form. 152/4887 useless extension candidates. Maximal degree in co-relation 9704. Up to 2725 conditions per place. [2024-11-12 20:38:57,652 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 89 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2024-11-12 20:38:57,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 127 transitions, 560 flow [2024-11-12 20:38:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:38:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:38:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-12 20:38:57,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-12 20:38:57,654 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 218 flow. Second operand 4 states and 207 transitions. [2024-11-12 20:38:57,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 127 transitions, 560 flow [2024-11-12 20:38:57,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 544 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-12 20:38:57,666 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 218 flow [2024-11-12 20:38:57,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-11-12 20:38:57,667 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2024-11-12 20:38:57,667 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 218 flow [2024-11-12 20:38:57,668 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) [2024-11-12 20:38:57,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:57,668 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-12 20:38:57,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:38:57,668 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)] === [2024-11-12 20:38:57,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash 629092752, now seen corresponding path program 1 times [2024-11-12 20:38:57,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:57,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014564382] [2024-11-12 20:38:57,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:57,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:38:57,681 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:38:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:38:57,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:38:57,695 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:38:57,695 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-12 20:38:57,695 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-11-12 20:38:57,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-11-12 20:38:57,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-11-12 20:38:57,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-11-12 20:38:57,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-11-12 20:38:57,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-11-12 20:38:57,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-11-12 20:38:57,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-11-12 20:38:57,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-11-12 20:38:57,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-11-12 20:38:57,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-11-12 20:38:57,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-11-12 20:38:57,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-11-12 20:38:57,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-11-12 20:38:57,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:38:57,698 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-12 20:38:57,699 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:38:57,699 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 20:38:57,723 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:38:57,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 244 flow [2024-11-12 20:38:57,739 INFO L124 PetriNetUnfolderBase]: 26/153 cut-off events. [2024-11-12 20:38:57,739 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 20:38:57,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 26/153 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 527 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 117. Up to 8 conditions per place. [2024-11-12 20:38:57,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 113 transitions, 244 flow [2024-11-12 20:38:57,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 113 transitions, 244 flow [2024-11-12 20:38:57,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:38:57,744 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;@1bfe686d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:38:57,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-12 20:38:57,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:38:57,746 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-12 20:38:57,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:38:57,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:57,746 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:38:57,746 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)] === [2024-11-12 20:38:57,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash 501643934, now seen corresponding path program 1 times [2024-11-12 20:38:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230719290] [2024-11-12 20:38:57,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:57,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:38:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:38:57,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:38:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230719290] [2024-11-12 20:38:57,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230719290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:38:57,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:38:57,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:38:57,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790785827] [2024-11-12 20:38:57,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:38:57,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:38:57,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:38:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:38:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:38:57,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2024-11-12 20:38:57,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-11-12 20:38:57,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:38:57,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2024-11-12 20:38:57,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:05,438 INFO L124 PetriNetUnfolderBase]: 53548/96435 cut-off events. [2024-11-12 20:39:05,438 INFO L125 PetriNetUnfolderBase]: For 1002/1002 co-relation queries the response was YES. [2024-11-12 20:39:05,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171304 conditions, 96435 events. 53548/96435 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 2346. Compared 968902 event pairs, 51804 based on Foata normal form. 21332/109397 useless extension candidates. Maximal degree in co-relation 87005. Up to 74214 conditions per place. [2024-11-12 20:39:06,301 INFO L140 encePairwiseOnDemand]: 87/113 looper letters, 69 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-11-12 20:39:06,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 118 transitions, 398 flow [2024-11-12 20:39:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:39:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:39:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-11-12 20:39:06,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6438053097345132 [2024-11-12 20:39:06,304 INFO L175 Difference]: Start difference. First operand has 100 places, 113 transitions, 244 flow. Second operand 4 states and 291 transitions. [2024-11-12 20:39:06,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 118 transitions, 398 flow [2024-11-12 20:39:06,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 396 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-12 20:39:06,310 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 226 flow [2024-11-12 20:39:06,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-11-12 20:39:06,311 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-12 20:39:06,313 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 226 flow [2024-11-12 20:39:06,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-11-12 20:39:06,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:06,313 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:06,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:39:06,314 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:39:06,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash -67177482, now seen corresponding path program 1 times [2024-11-12 20:39:06,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:06,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96613046] [2024-11-12 20:39:06,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:06,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:06,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96613046] [2024-11-12 20:39:06,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96613046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:06,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:06,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:39:06,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713043090] [2024-11-12 20:39:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:06,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:39:06,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:39:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:39:06,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2024-11-12 20:39:06,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 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) [2024-11-12 20:39:06,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:06,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2024-11-12 20:39:06,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:12,367 INFO L124 PetriNetUnfolderBase]: 48532/81644 cut-off events. [2024-11-12 20:39:12,367 INFO L125 PetriNetUnfolderBase]: For 7894/7894 co-relation queries the response was YES. [2024-11-12 20:39:12,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157033 conditions, 81644 events. 48532/81644 cut-off events. For 7894/7894 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 764519 event pairs, 7884 based on Foata normal form. 1872/79110 useless extension candidates. Maximal degree in co-relation 13335. Up to 34556 conditions per place. [2024-11-12 20:39:13,106 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 131 selfloop transitions, 6 changer transitions 0/183 dead transitions. [2024-11-12 20:39:13,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 183 transitions, 674 flow [2024-11-12 20:39:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:39:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:39:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 414 transitions. [2024-11-12 20:39:13,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6106194690265486 [2024-11-12 20:39:13,109 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 226 flow. Second operand 6 states and 414 transitions. [2024-11-12 20:39:13,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 183 transitions, 674 flow [2024-11-12 20:39:13,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 183 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:39:13,121 INFO L231 Difference]: Finished difference. Result has 108 places, 94 transitions, 232 flow [2024-11-12 20:39:13,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=108, PETRI_TRANSITIONS=94} [2024-11-12 20:39:13,124 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 8 predicate places. [2024-11-12 20:39:13,124 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 232 flow [2024-11-12 20:39:13,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 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) [2024-11-12 20:39:13,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:13,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:13,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:39:13,125 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)] === [2024-11-12 20:39:13,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:13,126 INFO L85 PathProgramCache]: Analyzing trace with hash -228615717, now seen corresponding path program 1 times [2024-11-12 20:39:13,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:13,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519011099] [2024-11-12 20:39:13,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:13,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:13,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:13,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519011099] [2024-11-12 20:39:13,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519011099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:13,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:13,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:39:13,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580634439] [2024-11-12 20:39:13,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:13,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:39:13,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:13,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:39:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:39:13,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 113 [2024-11-12 20:39:13,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 94 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2024-11-12 20:39:13,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:13,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 113 [2024-11-12 20:39:13,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:19,024 INFO L124 PetriNetUnfolderBase]: 47105/82279 cut-off events. [2024-11-12 20:39:19,024 INFO L125 PetriNetUnfolderBase]: For 14287/16535 co-relation queries the response was YES. [2024-11-12 20:39:19,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157481 conditions, 82279 events. 47105/82279 cut-off events. For 14287/16535 co-relation queries the response was YES. Maximal size of possible extension queue 2159. Compared 787601 event pairs, 18833 based on Foata normal form. 1256/79503 useless extension candidates. Maximal degree in co-relation 134808. Up to 60521 conditions per place. [2024-11-12 20:39:19,533 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 110 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2024-11-12 20:39:19,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 165 transitions, 667 flow [2024-11-12 20:39:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:39:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:39:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2024-11-12 20:39:19,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6265486725663717 [2024-11-12 20:39:19,535 INFO L175 Difference]: Start difference. First operand has 108 places, 94 transitions, 232 flow. Second operand 5 states and 354 transitions. [2024-11-12 20:39:19,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 165 transitions, 667 flow [2024-11-12 20:39:19,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 165 transitions, 644 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-12 20:39:19,547 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 281 flow [2024-11-12 20:39:19,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2024-11-12 20:39:19,548 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-12 20:39:19,548 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 281 flow [2024-11-12 20:39:19,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2024-11-12 20:39:19,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:19,549 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 20:39:19,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:39:19,550 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)] === [2024-11-12 20:39:19,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2082501427, now seen corresponding path program 1 times [2024-11-12 20:39:19,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:19,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314325213] [2024-11-12 20:39:19,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:19,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:19,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314325213] [2024-11-12 20:39:19,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314325213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:19,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:19,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:39:19,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397529532] [2024-11-12 20:39:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:19,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:39:19,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:39:19,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:39:19,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2024-11-12 20:39:19,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 281 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) [2024-11-12 20:39:19,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:19,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2024-11-12 20:39:19,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:25,594 INFO L124 PetriNetUnfolderBase]: 48905/78625 cut-off events. [2024-11-12 20:39:25,595 INFO L125 PetriNetUnfolderBase]: For 26008/26008 co-relation queries the response was YES. [2024-11-12 20:39:25,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165972 conditions, 78625 events. 48905/78625 cut-off events. For 26008/26008 co-relation queries the response was YES. Maximal size of possible extension queue 2025. Compared 693903 event pairs, 11379 based on Foata normal form. 2136/79378 useless extension candidates. Maximal degree in co-relation 144435. Up to 46837 conditions per place. [2024-11-12 20:39:26,027 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 129 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2024-11-12 20:39:26,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 181 transitions, 781 flow [2024-11-12 20:39:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:39:26,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:39:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-11-12 20:39:26,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6570796460176991 [2024-11-12 20:39:26,029 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 281 flow. Second operand 4 states and 297 transitions. [2024-11-12 20:39:26,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 181 transitions, 781 flow [2024-11-12 20:39:26,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 777 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 20:39:26,121 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 293 flow [2024-11-12 20:39:26,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-11-12 20:39:26,122 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2024-11-12 20:39:26,122 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 293 flow [2024-11-12 20:39:26,122 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) [2024-11-12 20:39:26,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:26,122 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:26,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:39:26,122 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)] === [2024-11-12 20:39:26,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -155216251, now seen corresponding path program 1 times [2024-11-12 20:39:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:26,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831618894] [2024-11-12 20:39:26,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:26,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:26,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831618894] [2024-11-12 20:39:26,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831618894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:26,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:26,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:39:26,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284551313] [2024-11-12 20:39:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:26,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:39:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:39:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:39:26,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 113 [2024-11-12 20:39:26,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 293 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) [2024-11-12 20:39:26,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:26,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 113 [2024-11-12 20:39:26,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:32,692 INFO L124 PetriNetUnfolderBase]: 52665/92727 cut-off events. [2024-11-12 20:39:32,692 INFO L125 PetriNetUnfolderBase]: For 37552/37568 co-relation queries the response was YES. [2024-11-12 20:39:32,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192503 conditions, 92727 events. 52665/92727 cut-off events. For 37552/37568 co-relation queries the response was YES. Maximal size of possible extension queue 2482. Compared 911762 event pairs, 21673 based on Foata normal form. 2624/91929 useless extension candidates. Maximal degree in co-relation 167613. Up to 68097 conditions per place. [2024-11-12 20:39:33,316 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 111 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2024-11-12 20:39:33,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 168 transitions, 752 flow [2024-11-12 20:39:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:39:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:39:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2024-11-12 20:39:33,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6247787610619469 [2024-11-12 20:39:33,318 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 293 flow. Second operand 5 states and 353 transitions. [2024-11-12 20:39:33,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 168 transitions, 752 flow [2024-11-12 20:39:33,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 168 transitions, 737 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:39:33,356 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 358 flow [2024-11-12 20:39:33,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2024-11-12 20:39:33,357 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 18 predicate places. [2024-11-12 20:39:33,357 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 358 flow [2024-11-12 20:39:33,358 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) [2024-11-12 20:39:33,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:33,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:33,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:39:33,359 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:39:33,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1025755457, now seen corresponding path program 1 times [2024-11-12 20:39:33,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:33,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994260397] [2024-11-12 20:39:33,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:33,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:33,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:33,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994260397] [2024-11-12 20:39:33,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994260397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:33,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:33,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:39:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628478119] [2024-11-12 20:39:33,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:33,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:39:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:39:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:39:33,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 113 [2024-11-12 20:39:33,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 358 flow. Second operand has 6 states, 6 states have (on average 46.833333333333336) internal successors, (281), 6 states have internal predecessors, (281), 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) [2024-11-12 20:39:33,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:33,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 113 [2024-11-12 20:39:33,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand