/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread/twostage_3.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:48:54,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:48:54,245 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 23:48:54,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:48:54,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:48:54,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:48:54,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:48:54,280 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:48:54,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:48:54,281 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:48:54,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:48:54,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:48:54,282 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:48:54,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:48:54,282 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:48:54,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:48:54,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:48:54,283 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:48:54,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:48:54,284 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:48:54,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:48:54,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:48:54,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:48:54,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:48:54,285 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 23:48:54,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:48:54,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:48:54,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:48:54,510 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:48:54,510 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:48:54,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/twostage_3.i [2025-04-13 23:48:55,829 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4b9bc30/509afc8a2eda4208bfaf3a668c72b39d/FLAGf14e4a22a [2025-04-13 23:48:56,098 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:48:56,099 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i [2025-04-13 23:48:56,118 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4b9bc30/509afc8a2eda4208bfaf3a668c72b39d/FLAGf14e4a22a [2025-04-13 23:48:57,030 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4b9bc30/509afc8a2eda4208bfaf3a668c72b39d [2025-04-13 23:48:57,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:48:57,033 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:48:57,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:48:57,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:48:57,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:48:57,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c2119e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57, skipping insertion in model container [2025-04-13 23:48:57,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,067 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:48:57,395 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i[59093,59106] [2025-04-13 23:48:57,412 WARN L1730 CHandler]: Possible shadowing of function lock [2025-04-13 23:48:57,412 WARN L1730 CHandler]: Possible shadowing of function lock [2025-04-13 23:48:57,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:48:57,419 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:48:57,489 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i[59093,59106] [2025-04-13 23:48:57,501 WARN L1730 CHandler]: Possible shadowing of function lock [2025-04-13 23:48:57,501 WARN L1730 CHandler]: Possible shadowing of function lock [2025-04-13 23:48:57,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:48:57,551 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:48:57,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57 WrapperNode [2025-04-13 23:48:57,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:48:57,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:48:57,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:48:57,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:48:57,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,600 INFO L138 Inliner]: procedures = 373, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 128 [2025-04-13 23:48:57,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:48:57,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:48:57,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:48:57,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:48:57,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,635 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-04-13 23:48:57,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,642 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:48:57,649 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:48:57,649 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:48:57,649 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:48:57,649 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (1/1) ... [2025-04-13 23:48:57,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:48:57,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:48:57,675 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 23:48:57,677 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 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2025-04-13 23:48:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2025-04-13 23:48:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 23:48:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 23:48:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 23:48:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:48:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:48:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:48:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 23:48:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:48:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:48:57,694 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 23:48:57,804 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:48:57,805 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:48:58,003 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1301: havoc main_~#tPool~0#1.base, main_~#tPool~0#1.offset; [2025-04-13 23:48:58,003 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1301-1: SUMMARY for call ULTIMATE.dealloc(main_~#tPool~0#1.base, main_~#tPool~0#1.offset); srcloc: null [2025-04-13 23:48:58,003 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1302: havoc main_~#rPool~0#1.base, main_~#rPool~0#1.offset; [2025-04-13 23:48:58,003 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1302-1: SUMMARY for call ULTIMATE.dealloc(main_~#rPool~0#1.base, main_~#rPool~0#1.offset); srcloc: null [2025-04-13 23:48:58,004 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:48:58,004 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:48:58,005 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:48:58,209 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:48:58,211 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:48:58,214 WARN L179 LargeBlockEncoding]: Complex 3:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:48:58,221 WARN L179 LargeBlockEncoding]: Complex 2:5 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:48:58,254 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:48:58,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:48:58 BoogieIcfgContainer [2025-04-13 23:48:58,254 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:48:58,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:48:58,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:48:58,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:48:58,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:48:57" (1/3) ... [2025-04-13 23:48:58,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176c8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:48:58, skipping insertion in model container [2025-04-13 23:48:58,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:48:57" (2/3) ... [2025-04-13 23:48:58,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176c8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:48:58, skipping insertion in model container [2025-04-13 23:48:58,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:48:58" (3/3) ... [2025-04-13 23:48:58,262 INFO L128 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2025-04-13 23:48:58,270 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:48:58,271 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG twostage_3.i that has 3 procedures, 37 locations, 49 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-13 23:48:58,271 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:48:58,321 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 23:48:58,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 53 transitions, 126 flow [2025-04-13 23:48:58,380 INFO L116 PetriNetUnfolderBase]: 19/86 cut-off events. [2025-04-13 23:48:58,381 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-13 23:48:58,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 86 events. 19/86 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 263 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 48. Up to 10 conditions per place. [2025-04-13 23:48:58,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 53 transitions, 126 flow [2025-04-13 23:48:58,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 104 flow [2025-04-13 23:48:58,394 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:48:58,405 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;@2b4d15d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:48:58,405 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 23:48:58,413 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:48:58,413 INFO L116 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-04-13 23:48:58,413 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:48:58,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:58,413 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 23:48:58,414 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 23:48:58,418 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:58,419 INFO L85 PathProgramCache]: Analyzing trace with hash 14572594, now seen corresponding path program 1 times [2025-04-13 23:48:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:58,424 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308503068] [2025-04-13 23:48:58,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:58,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 23:48:58,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 23:48:58,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:58,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:48:58,536 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:48:58,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 23:48:58,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 23:48:58,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:58,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:48:58,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:48:58,589 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:48:58,590 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 23:48:58,591 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 23:48:58,591 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-04-13 23:48:58,591 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 23:48:58,591 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:48:58,592 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:48:58,595 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:48:58,595 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 23:48:58,661 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-13 23:48:58,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 85 transitions, 214 flow [2025-04-13 23:48:58,718 INFO L116 PetriNetUnfolderBase]: 94/294 cut-off events. [2025-04-13 23:48:58,718 INFO L117 PetriNetUnfolderBase]: For 72/98 co-relation queries the response was YES. [2025-04-13 23:48:58,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 294 events. 94/294 cut-off events. For 72/98 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1398 event pairs, 1 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 195. Up to 39 conditions per place. [2025-04-13 23:48:58,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 85 transitions, 214 flow [2025-04-13 23:48:58,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 79 transitions, 202 flow [2025-04-13 23:48:58,727 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:48:58,729 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;@2b4d15d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:48:58,729 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 23:48:58,737 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:48:58,737 INFO L116 PetriNetUnfolderBase]: 0/33 cut-off events. [2025-04-13 23:48:58,737 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-13 23:48:58,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:58,737 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 23:48:58,738 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 23:48:58,738 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -696127578, now seen corresponding path program 1 times [2025-04-13 23:48:58,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:58,738 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130097753] [2025-04-13 23:48:58,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:58,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 23:48:58,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 23:48:58,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:58,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:48:58,804 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:48:58,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 23:48:58,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 23:48:58,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:58,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:48:58,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:48:58,840 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:48:58,840 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 23:48:58,840 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-04-13 23:48:58,841 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-13 23:48:58,841 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 23:48:58,841 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 23:48:58,841 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 23:48:58,841 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:48:58,841 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:48:58,841 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 23:48:58,891 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-04-13 23:48:58,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 117 transitions, 306 flow [2025-04-13 23:48:59,042 INFO L116 PetriNetUnfolderBase]: 441/982 cut-off events. [2025-04-13 23:48:59,042 INFO L117 PetriNetUnfolderBase]: For 419/537 co-relation queries the response was YES. [2025-04-13 23:48:59,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 982 events. 441/982 cut-off events. For 419/537 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5387 event pairs, 63 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 718. Up to 192 conditions per place. [2025-04-13 23:48:59,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 117 transitions, 306 flow [2025-04-13 23:48:59,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 111 transitions, 294 flow [2025-04-13 23:48:59,060 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:48:59,060 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;@2b4d15d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:48:59,060 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 23:48:59,069 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:48:59,069 INFO L116 PetriNetUnfolderBase]: 0/70 cut-off events. [2025-04-13 23:48:59,070 INFO L117 PetriNetUnfolderBase]: For 25/33 co-relation queries the response was YES. [2025-04-13 23:48:59,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:59,070 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-13 23:48:59,071 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 23:48:59,071 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:59,071 INFO L85 PathProgramCache]: Analyzing trace with hash -688825521, now seen corresponding path program 1 times [2025-04-13 23:48:59,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:59,071 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113188947] [2025-04-13 23:48:59,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:59,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:59,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 23:48:59,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 23:48:59,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:59,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:48:59,104 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:48:59,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 23:48:59,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 23:48:59,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:59,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:48:59,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:48:59,123 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:48:59,123 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-04-13 23:48:59,124 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2025-04-13 23:48:59,124 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2025-04-13 23:48:59,124 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-13 23:48:59,124 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 23:48:59,124 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 23:48:59,124 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 23:48:59,124 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:48:59,124 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:48:59,124 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-13 23:48:59,169 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2025-04-13 23:48:59,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 149 transitions, 402 flow [2025-04-13 23:48:59,600 INFO L116 PetriNetUnfolderBase]: 2140/3770 cut-off events. [2025-04-13 23:48:59,601 INFO L117 PetriNetUnfolderBase]: For 2144/2434 co-relation queries the response was YES. [2025-04-13 23:48:59,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5911 conditions, 3770 events. 2140/3770 cut-off events. For 2144/2434 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 22515 event pairs, 341 based on Foata normal form. 0/2763 useless extension candidates. Maximal degree in co-relation 2850. Up to 1024 conditions per place. [2025-04-13 23:48:59,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 149 transitions, 402 flow [2025-04-13 23:48:59,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 143 transitions, 390 flow [2025-04-13 23:48:59,679 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:48:59,679 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;@2b4d15d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:48:59,679 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 23:48:59,693 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:48:59,693 INFO L116 PetriNetUnfolderBase]: 2/126 cut-off events. [2025-04-13 23:48:59,693 INFO L117 PetriNetUnfolderBase]: For 67/91 co-relation queries the response was YES. [2025-04-13 23:48:59,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:48:59,694 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2025-04-13 23:48:59,694 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-04-13 23:48:59,694 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:48:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1023829139, now seen corresponding path program 1 times [2025-04-13 23:48:59,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:48:59,694 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644068931] [2025-04-13 23:48:59,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:48:59,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:48:59,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 23:48:59,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 23:48:59,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:59,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:48:59,744 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:48:59,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 23:48:59,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 23:48:59,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:48:59,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:48:59,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:48:59,789 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:48:59,789 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2025-04-13 23:48:59,789 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2025-04-13 23:48:59,789 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2025-04-13 23:48:59,789 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-04-13 23:48:59,789 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-04-13 23:48:59,789 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-04-13 23:48:59,789 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-04-13 23:48:59,789 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 23:48:59,789 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:48:59,790 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:48:59,790 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-04-13 23:48:59,852 INFO L143 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2025-04-13 23:48:59,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 502 flow [2025-04-13 23:49:01,554 INFO L116 PetriNetUnfolderBase]: 10375/16002 cut-off events. [2025-04-13 23:49:01,554 INFO L117 PetriNetUnfolderBase]: For 10450/11030 co-relation queries the response was YES. [2025-04-13 23:49:01,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26393 conditions, 16002 events. 10375/16002 cut-off events. For 10450/11030 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 102279 event pairs, 3184 based on Foata normal form. 0/12557 useless extension candidates. Maximal degree in co-relation 12426. Up to 5120 conditions per place. [2025-04-13 23:49:01,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 181 transitions, 502 flow [2025-04-13 23:49:01,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 175 transitions, 490 flow [2025-04-13 23:49:01,807 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:49:01,808 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;@2b4d15d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:49:01,808 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-04-13 23:49:01,817 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:49:01,817 INFO L116 PetriNetUnfolderBase]: 7/199 cut-off events. [2025-04-13 23:49:01,817 INFO L117 PetriNetUnfolderBase]: For 119/159 co-relation queries the response was YES. [2025-04-13 23:49:01,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:49:01,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:49:01,817 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2025-04-13 23:49:01,818 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:49:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1795988450, now seen corresponding path program 1 times [2025-04-13 23:49:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:49:01,818 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112279352] [2025-04-13 23:49:01,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:49:01,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:49:01,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 23:49:01,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 23:49:01,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:49:01,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:01,886 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 23:49:01,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:49:01,887 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112279352] [2025-04-13 23:49:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112279352] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:49:01,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:49:01,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 23:49:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827105607] [2025-04-13 23:49:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:49:01,892 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 23:49:01,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:49:01,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 23:49:01,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:49:01,912 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 181 [2025-04-13 23:49:01,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 175 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 23:49:01,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:49:01,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 181 [2025-04-13 23:49:01,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand