/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 FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:33:17,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:33:17,647 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 21:33:17,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:33:17,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:33:17,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:33:17,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:33:17,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:33:17,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:33:17,674 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:33:17,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:33:17,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:33:17,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:33:17,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:33:17,674 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:33:17,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:33:17,674 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:33:17,674 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:33:17,675 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:33:17,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:17,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:17,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:33:17,676 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:33:17,677 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:33:17,677 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 -> FINITE_AUTOMATA Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 21:33:17,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:33:17,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:33:17,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:33:17,901 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:33:17,901 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:33:17,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2025-04-13 21:33:19,234 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cbfd7f3/73ab8d4ef5024b0cbd5c4446816db256/FLAG7a23a9db9 [2025-04-13 21:33:19,520 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:33:19,520 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2025-04-13 21:33:19,536 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cbfd7f3/73ab8d4ef5024b0cbd5c4446816db256/FLAG7a23a9db9 [2025-04-13 21:33:20,284 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cbfd7f3/73ab8d4ef5024b0cbd5c4446816db256 [2025-04-13 21:33:20,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:33:20,287 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:33:20,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:33:20,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:33:20,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:33:20,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18731874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20, skipping insertion in model container [2025-04-13 21:33:20,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,323 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:33:20,656 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/stack-2.i[41520,41533] [2025-04-13 21:33:20,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:33:20,689 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:33:20,740 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/stack-2.i[41520,41533] [2025-04-13 21:33:20,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:33:20,784 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:33:20,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20 WrapperNode [2025-04-13 21:33:20,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:33:20,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:33:20,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:33:20,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:33:20,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,822 INFO L138 Inliner]: procedures = 277, calls = 36, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 151 [2025-04-13 21:33:20,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:33:20,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:33:20,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:33:20,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:33:20,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,833 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,845 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2025-04-13 21:33:20,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,850 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:33:20,856 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:33:20,856 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:33:20,856 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:33:20,856 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (1/1) ... [2025-04-13 21:33:20,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:20,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:20,883 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 21:33:20,885 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 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 21:33:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 21:33:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 21:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 21:33:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:33:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:33:20,900 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 21:33:20,997 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:33:20,999 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:33:21,200 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-1: pop_#res#1 := 0; [2025-04-13 21:33:21,201 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L984: havoc pop_#t~mem38#1; [2025-04-13 21:33:21,201 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L984-1: havoc pop_#t~ret37#1; [2025-04-13 21:33:21,202 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:33:21,202 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:33:21,202 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:33:21,446 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:33:21,448 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:33:21,452 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:33:21,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:33:21 BoogieIcfgContainer [2025-04-13 21:33:21,452 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:33:21,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:33:21,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:33:21,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:33:21,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:33:20" (1/3) ... [2025-04-13 21:33:21,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b5a7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:33:21, skipping insertion in model container [2025-04-13 21:33:21,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:20" (2/3) ... [2025-04-13 21:33:21,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b5a7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:33:21, skipping insertion in model container [2025-04-13 21:33:21,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:33:21" (3/3) ... [2025-04-13 21:33:21,460 INFO L128 eAbstractionObserver]: Analyzing ICFG stack-2.i [2025-04-13 21:33:21,471 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:33:21,473 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack-2.i that has 3 procedures, 23 locations, 24 edges, 1 initial locations, 2 loop locations, and 2 error locations. [2025-04-13 21:33:21,474 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:33:21,524 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 21:33:21,546 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 66 flow [2025-04-13 21:33:21,567 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 118 states, 115 states have (on average 2.6782608695652175) internal successors, (308), 117 states have internal predecessors, (308), 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 21:33:21,586 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:33:21,595 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=FINITE_AUTOMATA, 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;@73cd329e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:33:21,595 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 21:33:21,599 INFO L278 IsEmpty]: Start isEmpty. Operand has 118 states, 115 states have (on average 2.6782608695652175) internal successors, (308), 117 states have internal predecessors, (308), 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 21:33:21,602 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-04-13 21:33:21,602 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:21,603 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 21:33:21,603 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:21,606 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 348641147, now seen corresponding path program 1 times [2025-04-13 21:33:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:21,612 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365978428] [2025-04-13 21:33:21,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:21,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:21,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 21:33:21,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 21:33:21,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:21,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:21,894 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 21:33:21,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:21,895 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365978428] [2025-04-13 21:33:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365978428] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:21,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:21,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 21:33:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443013828] [2025-04-13 21:33:21,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:21,902 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:21,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:21,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:21,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:21,918 INFO L87 Difference]: Start difference. First operand has 118 states, 115 states have (on average 2.6782608695652175) internal successors, (308), 117 states have internal predecessors, (308), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 21:33:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:22,002 INFO L93 Difference]: Finished difference Result 196 states and 480 transitions. [2025-04-13 21:33:22,004 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:22,005 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2025-04-13 21:33:22,005 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:22,012 INFO L225 Difference]: With dead ends: 196 [2025-04-13 21:33:22,012 INFO L226 Difference]: Without dead ends: 150 [2025-04-13 21:33:22,014 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:22,016 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:22,016 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-04-13 21:33:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2025-04-13 21:33:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 147 states have (on average 2.4489795918367347) internal successors, (360), 149 states have internal predecessors, (360), 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 21:33:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 360 transitions. [2025-04-13 21:33:22,043 INFO L79 Accepts]: Start accepts. Automaton has 150 states and 360 transitions. Word has length 5 [2025-04-13 21:33:22,043 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:22,043 INFO L485 AbstractCegarLoop]: Abstraction has 150 states and 360 transitions. [2025-04-13 21:33:22,044 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 21:33:22,044 INFO L278 IsEmpty]: Start isEmpty. Operand 150 states and 360 transitions. [2025-04-13 21:33:22,044 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-13 21:33:22,044 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:22,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:22,044 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:33:22,044 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:22,045 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:22,045 INFO L85 PathProgramCache]: Analyzing trace with hash 23303779, now seen corresponding path program 1 times [2025-04-13 21:33:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:22,045 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142345502] [2025-04-13 21:33:22,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:22,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:22,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 21:33:22,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 21:33:22,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:22,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:22,148 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 21:33:22,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:22,148 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142345502] [2025-04-13 21:33:22,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142345502] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:22,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:22,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 21:33:22,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970891982] [2025-04-13 21:33:22,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:22,149 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:22,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:22,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:22,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:22,150 INFO L87 Difference]: Start difference. First operand 150 states and 360 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 21:33:22,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:22,213 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2025-04-13 21:33:22,214 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:22,214 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2025-04-13 21:33:22,214 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:22,215 INFO L225 Difference]: With dead ends: 163 [2025-04-13 21:33:22,215 INFO L226 Difference]: Without dead ends: 144 [2025-04-13 21:33:22,215 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:22,215 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:22,216 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-04-13 21:33:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2025-04-13 21:33:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 141 states have (on average 2.4468085106382977) internal successors, (345), 143 states have internal predecessors, (345), 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 21:33:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 345 transitions. [2025-04-13 21:33:22,224 INFO L79 Accepts]: Start accepts. Automaton has 144 states and 345 transitions. Word has length 7 [2025-04-13 21:33:22,224 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:22,224 INFO L485 AbstractCegarLoop]: Abstraction has 144 states and 345 transitions. [2025-04-13 21:33:22,225 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 21:33:22,225 INFO L278 IsEmpty]: Start isEmpty. Operand 144 states and 345 transitions. [2025-04-13 21:33:22,225 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-13 21:33:22,225 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:22,225 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:22,226 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 21:33:22,226 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:22,226 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:22,226 INFO L85 PathProgramCache]: Analyzing trace with hash 914474846, now seen corresponding path program 1 times [2025-04-13 21:33:22,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:22,226 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658027640] [2025-04-13 21:33:22,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:22,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-13 21:33:22,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-13 21:33:22,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:22,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:22,376 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658027640] [2025-04-13 21:33:22,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658027640] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:22,376 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275680404] [2025-04-13 21:33:22,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:22,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:22,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:22,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:33:22,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 21:33:22,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-13 21:33:22,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-13 21:33:22,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:22,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:22,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-13 21:33:22,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:22,528 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:22,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:22,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275680404] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:22,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:22,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-04-13 21:33:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300507744] [2025-04-13 21:33:22,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:22,599 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 21:33:22,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:22,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 21:33:22,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-13 21:33:22,600 INFO L87 Difference]: Start difference. First operand 144 states and 345 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 21:33:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:22,757 INFO L93 Difference]: Finished difference Result 550 states and 1374 transitions. [2025-04-13 21:33:22,757 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 21:33:22,757 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) Word has length 9 [2025-04-13 21:33:22,757 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:22,760 INFO L225 Difference]: With dead ends: 550 [2025-04-13 21:33:22,760 INFO L226 Difference]: Without dead ends: 534 [2025-04-13 21:33:22,761 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2025-04-13 21:33:22,761 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:22,761 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-04-13 21:33:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 392. [2025-04-13 21:33:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 389 states have (on average 2.5989717223650386) internal successors, (1011), 391 states have internal predecessors, (1011), 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 21:33:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1011 transitions. [2025-04-13 21:33:22,795 INFO L79 Accepts]: Start accepts. Automaton has 392 states and 1011 transitions. Word has length 9 [2025-04-13 21:33:22,796 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:22,796 INFO L485 AbstractCegarLoop]: Abstraction has 392 states and 1011 transitions. [2025-04-13 21:33:22,796 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 21:33:22,796 INFO L278 IsEmpty]: Start isEmpty. Operand 392 states and 1011 transitions. [2025-04-13 21:33:22,796 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-13 21:33:22,796 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:22,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:22,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 21:33:23,002 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:23,002 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:23,003 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:23,003 INFO L85 PathProgramCache]: Analyzing trace with hash 745610930, now seen corresponding path program 1 times [2025-04-13 21:33:23,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:23,003 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250536132] [2025-04-13 21:33:23,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:23,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:23,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 21:33:23,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 21:33:23,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:23,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:23,083 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 21:33:23,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:23,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250536132] [2025-04-13 21:33:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250536132] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:23,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:23,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 21:33:23,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444650915] [2025-04-13 21:33:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:23,084 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:23,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:23,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:23,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:23,084 INFO L87 Difference]: Start difference. First operand 392 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 21:33:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:23,140 INFO L93 Difference]: Finished difference Result 577 states and 1517 transitions. [2025-04-13 21:33:23,140 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:23,141 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 10 [2025-04-13 21:33:23,141 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:23,142 INFO L225 Difference]: With dead ends: 577 [2025-04-13 21:33:23,142 INFO L226 Difference]: Without dead ends: 292 [2025-04-13 21:33:23,143 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:23,143 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:23,143 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 21:33:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2025-04-13 21:33:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 276. [2025-04-13 21:33:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 2.474264705882353) internal successors, (673), 275 states have internal predecessors, (673), 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 21:33:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 673 transitions. [2025-04-13 21:33:23,154 INFO L79 Accepts]: Start accepts. Automaton has 276 states and 673 transitions. Word has length 10 [2025-04-13 21:33:23,154 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:23,154 INFO L485 AbstractCegarLoop]: Abstraction has 276 states and 673 transitions. [2025-04-13 21:33:23,154 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 21:33:23,155 INFO L278 IsEmpty]: Start isEmpty. Operand 276 states and 673 transitions. [2025-04-13 21:33:23,155 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 21:33:23,155 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:23,155 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:23,155 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 21:33:23,155 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:23,156 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1639011392, now seen corresponding path program 1 times [2025-04-13 21:33:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:23,156 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204484002] [2025-04-13 21:33:23,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:23,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 21:33:23,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 21:33:23,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:23,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:23,494 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 21:33:23,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:23,494 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204484002] [2025-04-13 21:33:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204484002] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:23,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:23,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 21:33:23,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306408232] [2025-04-13 21:33:23,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:23,495 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 21:33:23,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:23,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 21:33:23,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 21:33:23,495 INFO L87 Difference]: Start difference. First operand 276 states and 673 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 21:33:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:23,560 INFO L93 Difference]: Finished difference Result 319 states and 767 transitions. [2025-04-13 21:33:23,561 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 21:33:23,561 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Word has length 11 [2025-04-13 21:33:23,561 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:23,563 INFO L225 Difference]: With dead ends: 319 [2025-04-13 21:33:23,563 INFO L226 Difference]: Without dead ends: 312 [2025-04-13 21:33:23,563 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 21:33:23,563 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:23,564 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2025-04-13 21:33:23,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 302. [2025-04-13 21:33:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 298 states have (on average 2.459731543624161) internal successors, (733), 301 states have internal predecessors, (733), 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 21:33:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 733 transitions. [2025-04-13 21:33:23,580 INFO L79 Accepts]: Start accepts. Automaton has 302 states and 733 transitions. Word has length 11 [2025-04-13 21:33:23,581 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:23,581 INFO L485 AbstractCegarLoop]: Abstraction has 302 states and 733 transitions. [2025-04-13 21:33:23,581 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 21:33:23,581 INFO L278 IsEmpty]: Start isEmpty. Operand 302 states and 733 transitions. [2025-04-13 21:33:23,585 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 21:33:23,585 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:23,585 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:23,585 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 21:33:23,586 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:23,586 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1296132771, now seen corresponding path program 1 times [2025-04-13 21:33:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:23,586 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739953879] [2025-04-13 21:33:23,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:23,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:23,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:33:23,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:33:23,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:23,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:24,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:24,009 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739953879] [2025-04-13 21:33:24,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739953879] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:24,009 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733137492] [2025-04-13 21:33:24,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:24,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:24,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:24,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:33:24,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 21:33:24,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:33:24,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:33:24,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:24,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:24,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 21:33:24,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:24,157 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:24,219 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2025-04-13 21:33:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:24,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:24,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733137492] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:24,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:24,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2025-04-13 21:33:24,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902888236] [2025-04-13 21:33:24,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:24,435 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 21:33:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:24,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 21:33:24,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2025-04-13 21:33:24,436 INFO L87 Difference]: Start difference. First operand 302 states and 733 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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 21:33:24,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:24,790 INFO L93 Difference]: Finished difference Result 532 states and 1281 transitions. [2025-04-13 21:33:24,790 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 21:33:24,791 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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) Word has length 15 [2025-04-13 21:33:24,791 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:24,794 INFO L225 Difference]: With dead ends: 532 [2025-04-13 21:33:24,794 INFO L226 Difference]: Without dead ends: 525 [2025-04-13 21:33:24,794 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2025-04-13 21:33:24,795 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 134 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:24,795 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 0 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 21:33:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-04-13 21:33:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 309. [2025-04-13 21:33:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 2.4918032786885247) internal successors, (760), 308 states have internal predecessors, (760), 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 21:33:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 760 transitions. [2025-04-13 21:33:24,806 INFO L79 Accepts]: Start accepts. Automaton has 309 states and 760 transitions. Word has length 15 [2025-04-13 21:33:24,806 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:24,806 INFO L485 AbstractCegarLoop]: Abstraction has 309 states and 760 transitions. [2025-04-13 21:33:24,806 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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 21:33:24,806 INFO L278 IsEmpty]: Start isEmpty. Operand 309 states and 760 transitions. [2025-04-13 21:33:24,807 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 21:33:24,807 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:24,807 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:24,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 21:33:25,007 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-04-13 21:33:25,008 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:25,008 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash -987161693, now seen corresponding path program 1 times [2025-04-13 21:33:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:25,008 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892841889] [2025-04-13 21:33:25,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:25,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:25,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:33:25,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:33:25,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:25,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:33:25,044 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 21:33:25,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:33:25,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:33:25,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:25,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:33:25,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 21:33:25,087 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 21:33:25,087 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2025-04-13 21:33:25,092 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2025-04-13 21:33:25,092 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-04-13 21:33:25,092 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-13 21:33:25,092 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 21:33:25,092 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 21:33:25,093 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 21:33:25,095 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:25,139 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 21:33:25,140 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 21:33:25,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 09:33:25 BasicIcfg [2025-04-13 21:33:25,142 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 21:33:25,142 INFO L158 Benchmark]: Toolchain (without parser) took 4855.02ms. Allocated memory was 155.2MB in the beginning and 369.1MB in the end (delta: 213.9MB). Free memory was 107.0MB in the beginning and 221.2MB in the end (delta: -114.2MB). Peak memory consumption was 100.2MB. Max. memory is 8.0GB. [2025-04-13 21:33:25,142 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:33:25,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.03ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 74.3MB in the end (delta: 32.7MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2025-04-13 21:33:25,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.34ms. Allocated memory is still 155.2MB. Free memory was 74.3MB in the beginning and 71.6MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:33:25,143 INFO L158 Benchmark]: Boogie Preprocessor took 31.86ms. Allocated memory is still 155.2MB. Free memory was 71.6MB in the beginning and 69.6MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 21:33:25,143 INFO L158 Benchmark]: IcfgBuilder took 596.49ms. Allocated memory is still 155.2MB. Free memory was 69.6MB in the beginning and 90.9MB in the end (delta: -21.3MB). Peak memory consumption was 53.6MB. Max. memory is 8.0GB. [2025-04-13 21:33:25,143 INFO L158 Benchmark]: TraceAbstraction took 3687.65ms. Allocated memory was 155.2MB in the beginning and 369.1MB in the end (delta: 213.9MB). Free memory was 90.2MB in the beginning and 221.2MB in the end (delta: -131.0MB). Peak memory consumption was 84.4MB. Max. memory is 8.0GB. [2025-04-13 21:33:25,144 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 498.03ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 74.3MB in the end (delta: 32.7MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.34ms. Allocated memory is still 155.2MB. Free memory was 74.3MB in the beginning and 71.6MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 31.86ms. Allocated memory is still 155.2MB. Free memory was 71.6MB in the beginning and 69.6MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 596.49ms. Allocated memory is still 155.2MB. Free memory was 69.6MB in the beginning and 90.9MB in the end (delta: -21.3MB). Peak memory consumption was 53.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3687.65ms. Allocated memory was 155.2MB in the beginning and 369.1MB in the end (delta: 213.9MB). Free memory was 90.2MB in the beginning and 221.2MB in the end (delta: -131.0MB). Peak memory consumption was 84.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 941]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(5)]; [L936] 0 static unsigned int arr[(5)]; [L936] 0 static unsigned int arr[(5)]; [L936] 0 static unsigned int arr[(5)]; [L936] 0 static unsigned int arr[(5)]; [L936] 0 static unsigned int arr[(5)]; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1021] 0 pthread_t id1, id2; [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-2, m={4:0}, top=0] [L990] 1 int i; [L991] 1 unsigned int tmp; [L992] 1 i=0 [L992] COND TRUE 1 i<(5) VAL [arr={3:0}, flag=0, m={4:0}, top=0] [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-2, id2=-1, m={4:0}, top=0] [L995] 1 tmp = __VERIFIER_nondet_uint() [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) [L969] CALL, EXPR 1 get_top() [L954] 1 return top; [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x [L970] CALL 1 inc_top() [L946] 1 top++ [L970] RET 1 inc_top() [L972] 1 return 0; [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) [L999] 1 flag=(1) VAL [\at(arg, Pre)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=1, top=1] [L1006] 2 int i; [L1007] 2 i=0 [L1007] COND TRUE 2 i<(5) VAL [arr={3:0}, flag=1, m={4:0}, top=1] [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) [L983] CALL 2 dec_top() [L950] 2 top-- [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] [L984] 2 return stack[get_top()]; [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1007] 2 i++ [L1007] COND TRUE 2 i<(5) VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; [L976] RET, EXPR 2 get_top() [L976] COND TRUE 2 get_top()==0 [L979] 2 return (-2); [L1012] RET, EXPR 2 pop(arr) [L1012] COND TRUE 2 !(pop(arr)!=(-2)) [L1013] CALL 2 error() [L941] 2 reach_error() VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1024]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 941]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 46 edges, 6 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 583 IncrementalHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 0 mSDtfsCounter, 583 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=3, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 384 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 1004 SizeOfPredicates, 5 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 2/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-13 21:33:25,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...