/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:42:30,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:42:30,347 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:42:30,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:42:30,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:42:30,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:42:30,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:42:30,377 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:42:30,378 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:42:30,378 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:42:30,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:42:30,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:42:30,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:42:30,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:42:30,379 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:42:30,380 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:42:30,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:42:30,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:42:30,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:42:30,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:42:30,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:42:30,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:42:30,381 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:42:30,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:42:30,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:42:30,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:42:30,639 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:42:30,640 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:42:30,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2025-04-13 19:42:31,940 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14afa457e/9265ba002b5847f9ac21f1e50bdb1d8d/FLAG14c65c284 [2025-04-13 19:42:32,169 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:42:32,169 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2025-04-13 19:42:32,177 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14afa457e/9265ba002b5847f9ac21f1e50bdb1d8d/FLAG14c65c284 [2025-04-13 19:42:32,990 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14afa457e/9265ba002b5847f9ac21f1e50bdb1d8d [2025-04-13 19:42:32,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:42:32,994 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:42:32,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:42:32,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:42:32,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:42:32,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:42:32" (1/1) ... [2025-04-13 19:42:32,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e69bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:32, skipping insertion in model container [2025-04-13 19:42:32,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:42:32" (1/1) ... [2025-04-13 19:42:33,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:42:33,238 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2025-04-13 19:42:33,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:42:33,267 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:42:33,298 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2025-04-13 19:42:33,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:42:33,329 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:42:33,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33 WrapperNode [2025-04-13 19:42:33,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:42:33,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:42:33,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:42:33,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:42:33,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,363 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2025-04-13 19:42:33,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:42:33,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:42:33,364 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:42:33,364 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:42:33,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,380 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]. [2025-04-13 19:42:33,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,385 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,388 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:42:33,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:42:33,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:42:33,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:42:33,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (1/1) ... [2025-04-13 19:42:33,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:42:33,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:42:33,426 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) [2025-04-13 19:42:33,428 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 [2025-04-13 19:42:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-13 19:42:33,443 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:42:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:42:33,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:42:33,444 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:42:33,544 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:42:33,547 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:42:33,737 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:42:33,738 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:42:33,738 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:42:33,882 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:42:33,892 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:42:33,892 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:42:33,893 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:42:33,897 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:42:33,898 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:42:33,902 INFO L313 CfgBuilder]: Removed 8 assume(true) statements. [2025-04-13 19:42:33,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:42:33 BoogieIcfgContainer [2025-04-13 19:42:33,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:42:33,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:42:33,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:42:33,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:42:33,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:42:32" (1/3) ... [2025-04-13 19:42:33,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f99af23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:42:33, skipping insertion in model container [2025-04-13 19:42:33,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:42:33" (2/3) ... [2025-04-13 19:42:33,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f99af23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:42:33, skipping insertion in model container [2025-04-13 19:42:33,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:42:33" (3/3) ... [2025-04-13 19:42:33,909 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2025-04-13 19:42:33,919 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:42:33,921 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_60-invariant_racefree.i that has 2 procedures, 44 locations, 67 edges, 1 initial locations, 10 loop locations, and 2 error locations. [2025-04-13 19:42:33,921 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:42:33,956 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-13 19:42:33,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 68 transitions, 143 flow [2025-04-13 19:42:34,014 INFO L116 PetriNetUnfolderBase]: 33/96 cut-off events. [2025-04-13 19:42:34,016 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:42:34,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 33/96 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 340 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 61. Up to 10 conditions per place. [2025-04-13 19:42:34,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 68 transitions, 143 flow [2025-04-13 19:42:34,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 65 transitions, 134 flow [2025-04-13 19:42:34,025 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:42:34,031 INFO L340 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;@69acabec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:42:34,031 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:42:34,055 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:42:34,055 INFO L116 PetriNetUnfolderBase]: 3/17 cut-off events. [2025-04-13 19:42:34,055 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:42:34,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:42:34,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 19:42:34,061 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-04-13 19:42:34,065 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:42:34,065 INFO L85 PathProgramCache]: Analyzing trace with hash 15893792, now seen corresponding path program 1 times [2025-04-13 19:42:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:42:34,071 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973575302] [2025-04-13 19:42:34,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:42:34,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:42:34,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:42:34,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:42:34,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:42:34,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:42:34,159 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:42:34,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:42:34,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:42:34,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:42:34,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:42:34,196 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:42:34,197 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:42:34,197 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 19:42:34,199 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 19:42:34,199 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-04-13 19:42:34,199 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 19:42:34,199 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:42:34,199 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:42:34,202 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:42:34,202 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 19:42:34,225 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 19:42:34,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 101 transitions, 218 flow [2025-04-13 19:42:34,254 INFO L116 PetriNetUnfolderBase]: 57/165 cut-off events. [2025-04-13 19:42:34,254 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-13 19:42:34,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 57/165 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 683 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 100. Up to 15 conditions per place. [2025-04-13 19:42:34,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 101 transitions, 218 flow [2025-04-13 19:42:34,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 101 transitions, 218 flow [2025-04-13 19:42:34,258 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:42:34,258 INFO L340 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;@69acabec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:42:34,259 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 19:42:34,262 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:42:34,263 INFO L116 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-04-13 19:42:34,263 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:42:34,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:42:34,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 19:42:34,263 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-13 19:42:34,263 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:42:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash 586961849, now seen corresponding path program 1 times [2025-04-13 19:42:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:42:34,263 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686140976] [2025-04-13 19:42:34,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:42:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:42:34,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 19:42:34,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 19:42:34,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:42:34,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:42:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:42:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:42:34,310 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686140976] [2025-04-13 19:42:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686140976] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:42:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:42:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:42:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965505195] [2025-04-13 19:42:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:42:34,316 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:42:34,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:42:34,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:42:34,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:42:34,335 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 101 [2025-04-13 19:42:34,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 101 transitions, 218 flow. Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2025-04-13 19:42:34,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:42:34,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 101 [2025-04-13 19:42:34,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:42:35,868 INFO L116 PetriNetUnfolderBase]: 16122/24633 cut-off events. [2025-04-13 19:42:35,869 INFO L117 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2025-04-13 19:42:35,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49367 conditions, 24633 events. 16122/24633 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 151652 event pairs, 15276 based on Foata normal form. 0/22096 useless extension candidates. Maximal degree in co-relation 45101. Up to 24627 conditions per place. [2025-04-13 19:42:36,026 INFO L140 encePairwiseOnDemand]: 69/101 looper letters, 66 selfloop transitions, 0 changer transitions 0/69 dead transitions. [2025-04-13 19:42:36,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 286 flow [2025-04-13 19:42:36,028 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 19:42:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 19:42:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 104 transitions. [2025-04-13 19:42:36,037 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5148514851485149 [2025-04-13 19:42:36,039 INFO L175 Difference]: Start difference. First operand has 70 places, 101 transitions, 218 flow. Second operand 2 states and 104 transitions. [2025-04-13 19:42:36,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 286 flow [2025-04-13 19:42:36,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:42:36,048 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 154 flow [2025-04-13 19:42:36,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2025-04-13 19:42:36,053 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2025-04-13 19:42:36,053 INFO L485 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 154 flow [2025-04-13 19:42:36,054 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2025-04-13 19:42:36,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:42:36,054 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 19:42:36,054 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:42:36,054 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-13 19:42:36,054 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:42:36,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1110670068, now seen corresponding path program 1 times [2025-04-13 19:42:36,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:42:36,055 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254089465] [2025-04-13 19:42:36,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:42:36,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:42:36,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:42:36,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:42:36,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:42:36,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:42:36,082 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:42:36,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:42:36,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:42:36,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:42:36,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:42:36,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:42:36,110 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:42:36,110 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 19:42:36,110 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 19:42:36,110 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-13 19:42:36,110 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 19:42:36,110 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 19:42:36,110 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:42:36,111 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-13 19:42:36,111 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:42:36,111 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 19:42:36,142 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 19:42:36,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 134 transitions, 295 flow [2025-04-13 19:42:36,159 INFO L116 PetriNetUnfolderBase]: 84/243 cut-off events. [2025-04-13 19:42:36,159 INFO L117 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-04-13 19:42:36,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 243 events. 84/243 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1088 event pairs, 1 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 176. Up to 20 conditions per place. [2025-04-13 19:42:36,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 134 transitions, 295 flow [2025-04-13 19:42:36,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 134 transitions, 295 flow [2025-04-13 19:42:36,163 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:42:36,164 INFO L340 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;@69acabec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:42:36,164 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 19:42:36,166 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:42:36,166 INFO L116 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-04-13 19:42:36,166 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:42:36,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:42:36,166 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 19:42:36,166 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 19:42:36,167 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:42:36,167 INFO L85 PathProgramCache]: Analyzing trace with hash 714838719, now seen corresponding path program 1 times [2025-04-13 19:42:36,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:42:36,167 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833499433] [2025-04-13 19:42:36,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:42:36,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:42:36,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 19:42:36,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 19:42:36,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:42:36,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:42:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:42:36,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:42:36,185 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833499433] [2025-04-13 19:42:36,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833499433] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:42:36,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:42:36,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:42:36,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197940876] [2025-04-13 19:42:36,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:42:36,185 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:42:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:42:36,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:42:36,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:42:36,186 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 134 [2025-04-13 19:42:36,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 295 flow. Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-04-13 19:42:36,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:42:36,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 134 [2025-04-13 19:42:36,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:43:02,957 INFO L116 PetriNetUnfolderBase]: 495443/667246 cut-off events. [2025-04-13 19:43:02,958 INFO L117 PetriNetUnfolderBase]: For 3839/3839 co-relation queries the response was YES. [2025-04-13 19:43:03,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337443 conditions, 667246 events. 495443/667246 cut-off events. For 3839/3839 co-relation queries the response was YES. Maximal size of possible extension queue 9633. Compared 4699096 event pairs, 469833 based on Foata normal form. 0/598813 useless extension candidates. Maximal degree in co-relation 546373. Up to 667208 conditions per place. [2025-04-13 19:43:05,981 INFO L140 encePairwiseOnDemand]: 92/134 looper letters, 88 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2025-04-13 19:43:05,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 387 flow [2025-04-13 19:43:05,982 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 19:43:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 19:43:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 138 transitions. [2025-04-13 19:43:05,983 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5149253731343284 [2025-04-13 19:43:05,983 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 295 flow. Second operand 2 states and 138 transitions. [2025-04-13 19:43:05,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 387 flow [2025-04-13 19:43:05,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:43:05,996 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 211 flow [2025-04-13 19:43:05,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=211, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2025-04-13 19:43:05,996 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 1 predicate places. [2025-04-13 19:43:05,997 INFO L485 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 211 flow [2025-04-13 19:43:05,997 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-04-13 19:43:05,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:43:05,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:43:05,997 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:43:05,997 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 19:43:05,997 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:43:05,997 INFO L85 PathProgramCache]: Analyzing trace with hash -628208365, now seen corresponding path program 1 times [2025-04-13 19:43:05,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:43:05,998 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306233760] [2025-04-13 19:43:05,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:43:05,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:43:06,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 19:43:06,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 19:43:06,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:06,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:43:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:43:06,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:43:06,108 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306233760] [2025-04-13 19:43:06,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306233760] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:43:06,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:43:06,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:43:06,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585327022] [2025-04-13 19:43:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:43:06,108 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:43:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:43:06,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:43:06,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:43:06,109 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 134 [2025-04-13 19:43:06,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2025-04-13 19:43:06,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:43:06,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 134 [2025-04-13 19:43:06,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand