./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:05:49,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:05:49,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:05:49,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:05:49,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:05:49,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:05:49,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:05:49,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:05:49,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:05:49,333 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:05:49,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:05:49,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:05:49,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:05:49,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:05:49,338 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:05:49,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:05:49,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:05:49,339 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:05:49,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:05:49,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:05:49,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:05:49,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:05:49,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:05:49,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:05:49,341 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:05:49,341 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:05:49,341 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:05:49,341 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:05:49,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:05:49,341 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:05:49,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:05:49,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:05:49,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:05:49,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:05:49,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:05:49,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:05:49,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:05:49,344 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:05:49,344 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:05:49,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:05:49,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:05:49,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:05:49,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:05:49,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:05:49,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2024-11-09 15:05:49,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:05:49,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:05:49,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:05:49,565 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:05:49,566 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:05:49,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-09 15:05:50,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:05:51,091 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:05:51,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-09 15:05:51,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31bc7be4b/887cd78f8ffa4c62b845fb79b931afe9/FLAG7328e93f5 [2024-11-09 15:05:51,116 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31bc7be4b/887cd78f8ffa4c62b845fb79b931afe9 [2024-11-09 15:05:51,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:05:51,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:05:51,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:05:51,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:05:51,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:05:51,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3a4ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51, skipping insertion in model container [2024-11-09 15:05:51,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,168 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:05:51,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:05:51,555 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:05:51,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:05:51,637 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:05:51,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51 WrapperNode [2024-11-09 15:05:51,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:05:51,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:05:51,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:05:51,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:05:51,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,684 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 181 [2024-11-09 15:05:51,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:05:51,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:05:51,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:05:51,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:05:51,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,712 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-09 15:05:51,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,716 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:05:51,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:05:51,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:05:51,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:05:51,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (1/1) ... [2024-11-09 15:05:51,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:05:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:05:51,783 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) [2024-11-09 15:05:51,786 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 [2024-11-09 15:05:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 15:05:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:05:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:05:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 15:05:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 15:05:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 15:05:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:05:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:05:51,838 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:05:51,975 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:05:51,977 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:05:52,246 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:05:52,246 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:05:52,373 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:05:52,374 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-09 15:05:52,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:05:52 BoogieIcfgContainer [2024-11-09 15:05:52,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:05:52,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:05:52,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:05:52,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:05:52,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:05:51" (1/3) ... [2024-11-09 15:05:52,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae3153f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:05:52, skipping insertion in model container [2024-11-09 15:05:52,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:51" (2/3) ... [2024-11-09 15:05:52,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae3153f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:05:52, skipping insertion in model container [2024-11-09 15:05:52,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:05:52" (3/3) ... [2024-11-09 15:05:52,382 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2024-11-09 15:05:52,398 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:05:52,398 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-09 15:05:52,398 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:05:52,444 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 15:05:52,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 98 transitions, 203 flow [2024-11-09 15:05:52,551 INFO L124 PetriNetUnfolderBase]: 26/139 cut-off events. [2024-11-09 15:05:52,552 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:05:52,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 139 events. 26/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 557 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2024-11-09 15:05:52,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 98 transitions, 203 flow [2024-11-09 15:05:52,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 97 transitions, 201 flow [2024-11-09 15:05:52,587 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:05:52,594 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;@46b3be59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:05:52,595 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-09 15:05:52,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:05:52,598 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-09 15:05:52,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:05:52,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:05:52,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 15:05:52,600 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-09 15:05:52,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:05:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash 480225844, now seen corresponding path program 1 times [2024-11-09 15:05:52,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:05:52,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950130092] [2024-11-09 15:05:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:05:52,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:05:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:05:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:05:52,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:05:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950130092] [2024-11-09 15:05:52,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950130092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:05:52,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:05:52,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:05:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171425494] [2024-11-09 15:05:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:05:52,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:05:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:05:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:05:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:05:52,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 98 [2024-11-09 15:05:52,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2024-11-09 15:05:52,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:05:52,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 98 [2024-11-09 15:05:52,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:05:53,195 INFO L124 PetriNetUnfolderBase]: 301/935 cut-off events. [2024-11-09 15:05:53,196 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:05:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 935 events. 301/935 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5851 event pairs, 0 based on Foata normal form. 201/1068 useless extension candidates. Maximal degree in co-relation 1546. Up to 591 conditions per place. [2024-11-09 15:05:53,206 INFO L140 encePairwiseOnDemand]: 76/98 looper letters, 66 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2024-11-09 15:05:53,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 365 flow [2024-11-09 15:05:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:05:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:05:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2024-11-09 15:05:53,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2024-11-09 15:05:53,222 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 201 flow. Second operand 4 states and 268 transitions. [2024-11-09 15:05:53,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 365 flow [2024-11-09 15:05:53,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 110 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:05:53,231 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 175 flow [2024-11-09 15:05:53,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2024-11-09 15:05:53,237 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2024-11-09 15:05:53,238 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 175 flow [2024-11-09 15:05:53,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2024-11-09 15:05:53,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:05:53,238 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:05:53,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:05:53,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-09 15:05:53,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:05:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash -127478309, now seen corresponding path program 1 times [2024-11-09 15:05:53,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:05:53,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600286001] [2024-11-09 15:05:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:05:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:05:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:05:53,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:05:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:05:53,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:05:53,304 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:05:53,306 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-09 15:05:53,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-09 15:05:53,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-09 15:05:53,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-09 15:05:53,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-09 15:05:53,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-09 15:05:53,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-09 15:05:53,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-09 15:05:53,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-09 15:05:53,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-09 15:05:53,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-09 15:05:53,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-09 15:05:53,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-09 15:05:53,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-09 15:05:53,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-09 15:05:53,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-09 15:05:53,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-09 15:05:53,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:05:53,322 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 15:05:53,325 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:05:53,325 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 15:05:53,354 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:05:53,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 143 transitions, 302 flow [2024-11-09 15:05:53,380 INFO L124 PetriNetUnfolderBase]: 45/244 cut-off events. [2024-11-09 15:05:53,381 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 15:05:53,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 244 events. 45/244 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1118 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 147. Up to 9 conditions per place. [2024-11-09 15:05:53,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 143 transitions, 302 flow [2024-11-09 15:05:53,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 143 transitions, 302 flow [2024-11-09 15:05:53,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:05:53,392 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;@46b3be59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:05:53,392 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-09 15:05:53,398 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:05:53,398 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-09 15:05:53,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:05:53,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:05:53,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 15:05:53,399 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:05:53,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:05:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash 616732782, now seen corresponding path program 1 times [2024-11-09 15:05:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:05:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327240714] [2024-11-09 15:05:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:05:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:05:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:05:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:05:53,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:05:53,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327240714] [2024-11-09 15:05:53,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327240714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:05:53,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:05:53,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:05:53,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108292284] [2024-11-09 15:05:53,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:05:53,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:05:53,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:05:53,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:05:53,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:05:53,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 143 [2024-11-09 15:05:53,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 143 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2024-11-09 15:05:53,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:05:53,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 143 [2024-11-09 15:05:53,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:05:55,624 INFO L124 PetriNetUnfolderBase]: 11954/25295 cut-off events. [2024-11-09 15:05:55,625 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-11-09 15:05:55,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43524 conditions, 25295 events. 11954/25295 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 246774 event pairs, 8436 based on Foata normal form. 5056/28242 useless extension candidates. Maximal degree in co-relation 21179. Up to 18093 conditions per place. [2024-11-09 15:05:55,776 INFO L140 encePairwiseOnDemand]: 113/143 looper letters, 88 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2024-11-09 15:05:55,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 152 transitions, 502 flow [2024-11-09 15:05:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:05:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:05:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2024-11-09 15:05:55,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608391608391608 [2024-11-09 15:05:55,779 INFO L175 Difference]: Start difference. First operand has 120 places, 143 transitions, 302 flow. Second operand 4 states and 378 transitions. [2024-11-09 15:05:55,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 152 transitions, 502 flow [2024-11-09 15:05:55,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 152 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:05:55,783 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 278 flow [2024-11-09 15:05:55,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2024-11-09 15:05:55,784 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 5 predicate places. [2024-11-09 15:05:55,784 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 278 flow [2024-11-09 15:05:55,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2024-11-09 15:05:55,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:05:55,785 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:05:55,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:05:55,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:05:55,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:05:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1012473378, now seen corresponding path program 1 times [2024-11-09 15:05:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:05:55,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799185026] [2024-11-09 15:05:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:05:55,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:05:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:05:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:05:55,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:05:55,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799185026] [2024-11-09 15:05:55,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799185026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:05:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855432703] [2024-11-09 15:05:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:05:55,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:05:55,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:05:55,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:05:55,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:05:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:05:55,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:05:55,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:05:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:05:56,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:05:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855432703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:05:56,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:05:56,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:05:56,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991507918] [2024-11-09 15:05:56,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:05:56,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:05:56,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:05:56,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:05:56,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:05:56,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 143 [2024-11-09 15:05:56,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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) [2024-11-09 15:05:56,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:05:56,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 143 [2024-11-09 15:05:56,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:05:57,777 INFO L124 PetriNetUnfolderBase]: 10793/22406 cut-off events. [2024-11-09 15:05:57,777 INFO L125 PetriNetUnfolderBase]: For 1104/1104 co-relation queries the response was YES. [2024-11-09 15:05:57,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40368 conditions, 22406 events. 10793/22406 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 214557 event pairs, 448 based on Foata normal form. 256/21329 useless extension candidates. Maximal degree in co-relation 3280. Up to 13216 conditions per place. [2024-11-09 15:05:57,922 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 144 selfloop transitions, 6 changer transitions 0/211 dead transitions. [2024-11-09 15:05:57,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 211 transitions, 756 flow [2024-11-09 15:05:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:05:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:05:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 517 transitions. [2024-11-09 15:05:57,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-11-09 15:05:57,925 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 278 flow. Second operand 6 states and 517 transitions. [2024-11-09 15:05:57,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 211 transitions, 756 flow [2024-11-09 15:05:57,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 211 transitions, 754 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:05:57,931 INFO L231 Difference]: Finished difference. Result has 128 places, 120 transitions, 284 flow [2024-11-09 15:05:57,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=128, PETRI_TRANSITIONS=120} [2024-11-09 15:05:57,932 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 8 predicate places. [2024-11-09 15:05:57,933 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 120 transitions, 284 flow [2024-11-09 15:05:57,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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) [2024-11-09 15:05:57,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:05:57,933 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 15:05:57,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:05:58,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:05:58,135 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:05:58,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:05:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1321903034, now seen corresponding path program 1 times [2024-11-09 15:05:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:05:58,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279862360] [2024-11-09 15:05:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:05:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:05:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:05:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:05:58,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:05:58,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279862360] [2024-11-09 15:05:58,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279862360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:05:58,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:05:58,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:05:58,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371795111] [2024-11-09 15:05:58,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:05:58,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:05:58,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:05:58,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:05:58,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:05:58,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 143 [2024-11-09 15:05:58,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 120 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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) [2024-11-09 15:05:58,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:05:58,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 143 [2024-11-09 15:05:58,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:05:59,732 INFO L124 PetriNetUnfolderBase]: 10603/21576 cut-off events. [2024-11-09 15:05:59,733 INFO L125 PetriNetUnfolderBase]: For 2020/2020 co-relation queries the response was YES. [2024-11-09 15:05:59,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39684 conditions, 21576 events. 10603/21576 cut-off events. For 2020/2020 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 202262 event pairs, 735 based on Foata normal form. 256/20827 useless extension candidates. Maximal degree in co-relation 18828. Up to 14272 conditions per place. [2024-11-09 15:05:59,852 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 113 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2024-11-09 15:05:59,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 180 transitions, 640 flow [2024-11-09 15:05:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:05:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:05:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2024-11-09 15:05:59,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328671328671329 [2024-11-09 15:05:59,858 INFO L175 Difference]: Start difference. First operand has 128 places, 120 transitions, 284 flow. Second operand 4 states and 362 transitions. [2024-11-09 15:05:59,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 180 transitions, 640 flow [2024-11-09 15:05:59,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 180 transitions, 624 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-09 15:05:59,875 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 284 flow [2024-11-09 15:05:59,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2024-11-09 15:05:59,877 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 6 predicate places. [2024-11-09 15:05:59,878 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 284 flow [2024-11-09 15:05:59,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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) [2024-11-09 15:05:59,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:05:59,878 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 15:05:59,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:05:59,879 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:05:59,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:05:59,879 INFO L85 PathProgramCache]: Analyzing trace with hash 961523915, now seen corresponding path program 1 times [2024-11-09 15:05:59,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:05:59,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380906156] [2024-11-09 15:05:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:05:59,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:05:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:05:59,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:05:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:05:59,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:05:59,916 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:05:59,917 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-09 15:05:59,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-11-09 15:05:59,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-11-09 15:05:59,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-11-09 15:05:59,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-11-09 15:05:59,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-11-09 15:05:59,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-11-09 15:05:59,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-11-09 15:05:59,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-11-09 15:05:59,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-11-09 15:05:59,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-11-09 15:05:59,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-11-09 15:05:59,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-11-09 15:05:59,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-11-09 15:05:59,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-11-09 15:05:59,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-11-09 15:05:59,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-11-09 15:05:59,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-11-09 15:05:59,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-11-09 15:05:59,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-11-09 15:05:59,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-11-09 15:05:59,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:05:59,920 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 15:05:59,921 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:05:59,921 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 15:05:59,951 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:05:59,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 188 transitions, 403 flow [2024-11-09 15:05:59,991 INFO L124 PetriNetUnfolderBase]: 67/368 cut-off events. [2024-11-09 15:05:59,991 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 15:05:59,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 368 events. 67/368 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1805 event pairs, 1 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 259. Up to 12 conditions per place. [2024-11-09 15:05:59,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 188 transitions, 403 flow [2024-11-09 15:05:59,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 188 transitions, 403 flow [2024-11-09 15:05:59,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:05:59,999 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;@46b3be59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:06:00,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-09 15:06:00,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:06:00,004 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-09 15:06:00,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:06:00,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:00,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 15:06:00,005 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:06:00,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash 796183445, now seen corresponding path program 1 times [2024-11-09 15:06:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:00,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075131759] [2024-11-09 15:06:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:00,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:00,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075131759] [2024-11-09 15:06:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075131759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:00,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:00,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900615769] [2024-11-09 15:06:00,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:00,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:00,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:00,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:00,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 188 [2024-11-09 15:06:00,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 188 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-11-09 15:06:00,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:00,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 188 [2024-11-09 15:06:00,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand