/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/weaver/parallel-ticket-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 22:36:57,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 22:36:57,905 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 22:36:57,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 22:36:57,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 22:36:57,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 22:36:57,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 22:36:57,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 22:36:57,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 22:36:57,931 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 22:36:57,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 22:36:57,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 22:36:57,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 22:36:57,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 22:36:57,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 22:36:57,933 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 22:36:57,934 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 22:36:57,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 22:36:57,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 22:36:57,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 22:36:57,935 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 22:36:57,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 22:36:57,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 22:36:57,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 22:36:57,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 22:36:57,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 22:36:57,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 22:36:57,935 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 22:36:58,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 22:36:58,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 22:36:58,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 22:36:58,156 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 22:36:58,157 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 22:36:58,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2025-04-13 22:36:59,440 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb17a31e/3179de79908d4ba2bca9d6b13c6e9a45/FLAGf67b4c61a [2025-04-13 22:36:59,641 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 22:36:59,642 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2025-04-13 22:36:59,648 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb17a31e/3179de79908d4ba2bca9d6b13c6e9a45/FLAGf67b4c61a [2025-04-13 22:37:00,491 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb17a31e/3179de79908d4ba2bca9d6b13c6e9a45 [2025-04-13 22:37:00,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 22:37:00,494 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 22:37:00,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 22:37:00,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 22:37:00,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 22:37:00,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b24b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00, skipping insertion in model container [2025-04-13 22:37:00,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,510 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 22:37:00,644 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2108,2121] [2025-04-13 22:37:00,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 22:37:00,655 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 22:37:00,678 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2108,2121] [2025-04-13 22:37:00,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 22:37:00,688 INFO L204 MainTranslator]: Completed translation [2025-04-13 22:37:00,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00 WrapperNode [2025-04-13 22:37:00,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 22:37:00,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 22:37:00,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 22:37:00,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 22:37:00,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,716 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 108 [2025-04-13 22:37:00,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 22:37:00,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 22:37:00,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 22:37:00,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 22:37:00,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,737 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 22:37:00,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,740 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 22:37:00,749 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 22:37:00,749 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 22:37:00,749 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 22:37:00,750 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (1/1) ... [2025-04-13 22:37:00,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 22:37:00,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 22:37:00,771 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 22:37:00,773 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 22:37:00,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 22:37:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 22:37:00,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 22:37:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 22:37:00,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 22:37:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 22:37:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 22:37:00,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 22:37:00,789 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 22:37:00,852 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 22:37:00,853 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 22:37:01,016 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 22:37:01,017 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 22:37:01,017 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 22:37:01,168 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 22:37:01,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 10:37:01 BoogieIcfgContainer [2025-04-13 22:37:01,168 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 22:37:01,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 22:37:01,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 22:37:01,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 22:37:01,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 10:37:00" (1/3) ... [2025-04-13 22:37:01,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c58bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 10:37:01, skipping insertion in model container [2025-04-13 22:37:01,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:37:00" (2/3) ... [2025-04-13 22:37:01,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c58bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 10:37:01, skipping insertion in model container [2025-04-13 22:37:01,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 10:37:01" (3/3) ... [2025-04-13 22:37:01,174 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2025-04-13 22:37:01,184 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 22:37:01,185 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-2.wvr.c that has 3 procedures, 33 locations, 31 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 22:37:01,185 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 22:37:01,228 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 22:37:01,247 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 33 transitions, 80 flow [2025-04-13 22:37:01,272 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 147 states, 146 states have (on average 2.2054794520547945) internal successors, (322), 146 states have internal predecessors, (322), 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 22:37:01,290 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 22:37:01,299 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;@5eea2e21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 22:37:01,299 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 22:37:01,300 INFO L278 IsEmpty]: Start isEmpty. Operand has 147 states, 146 states have (on average 2.2054794520547945) internal successors, (322), 146 states have internal predecessors, (322), 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 22:37:01,308 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 22:37:01,309 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 22:37:01,309 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 22:37:01,309 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 22:37:01,314 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 22:37:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash 424454793, now seen corresponding path program 1 times [2025-04-13 22:37:01,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 22:37:01,319 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615759209] [2025-04-13 22:37:01,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 22:37:01,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 22:37:01,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 22:37:01,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 22:37:01,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 22:37:01,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 22:37:01,587 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 22:37:01,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 22:37:01,587 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615759209] [2025-04-13 22:37:01,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615759209] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 22:37:01,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 22:37:01,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 22:37:01,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015479540] [2025-04-13 22:37:01,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 22:37:01,593 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 22:37:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 22:37:01,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 22:37:01,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 22:37:01,607 INFO L87 Difference]: Start difference. First operand has 147 states, 146 states have (on average 2.2054794520547945) internal successors, (322), 146 states have internal predecessors, (322), 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 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 22:37:01,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 22:37:01,695 INFO L93 Difference]: Finished difference Result 200 states and 427 transitions. [2025-04-13 22:37:01,696 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 22:37:01,697 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2025-04-13 22:37:01,697 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 22:37:01,702 INFO L225 Difference]: With dead ends: 200 [2025-04-13 22:37:01,702 INFO L226 Difference]: Without dead ends: 147 [2025-04-13 22:37:01,705 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 22:37:01,709 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 22:37:01,710 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 22:37:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-04-13 22:37:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2025-04-13 22:37:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.089041095890411) internal successors, (305), 146 states have internal predecessors, (305), 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 22:37:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 305 transitions. [2025-04-13 22:37:01,765 INFO L79 Accepts]: Start accepts. Automaton has 147 states and 305 transitions. Word has length 28 [2025-04-13 22:37:01,766 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 22:37:01,766 INFO L485 AbstractCegarLoop]: Abstraction has 147 states and 305 transitions. [2025-04-13 22:37:01,766 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 22:37:01,766 INFO L278 IsEmpty]: Start isEmpty. Operand 147 states and 305 transitions. [2025-04-13 22:37:01,767 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 22:37:01,767 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 22:37:01,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 22:37:01,767 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 22:37:01,767 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 22:37:01,768 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 22:37:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1476105851, now seen corresponding path program 1 times [2025-04-13 22:37:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 22:37:01,768 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534304463] [2025-04-13 22:37:01,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 22:37:01,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 22:37:01,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 22:37:01,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 22:37:01,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 22:37:01,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 22:37:01,857 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 22:37:01,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 22:37:01,857 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534304463] [2025-04-13 22:37:01,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534304463] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 22:37:01,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 22:37:01,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 22:37:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156952072] [2025-04-13 22:37:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 22:37:01,858 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 22:37:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 22:37:01,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 22:37:01,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 22:37:01,859 INFO L87 Difference]: Start difference. First operand 147 states and 305 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 22:37:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 22:37:01,908 INFO L93 Difference]: Finished difference Result 185 states and 378 transitions. [2025-04-13 22:37:01,909 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 22:37:01,909 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2025-04-13 22:37:01,909 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 22:37:01,910 INFO L225 Difference]: With dead ends: 185 [2025-04-13 22:37:01,910 INFO L226 Difference]: Without dead ends: 88 [2025-04-13 22:37:01,910 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 22:37:01,910 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 22:37:01,911 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 22:37:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-04-13 22:37:01,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-04-13 22:37:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.8620689655172413) internal successors, (162), 87 states have internal predecessors, (162), 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 22:37:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 162 transitions. [2025-04-13 22:37:01,915 INFO L79 Accepts]: Start accepts. Automaton has 88 states and 162 transitions. Word has length 29 [2025-04-13 22:37:01,915 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 22:37:01,915 INFO L485 AbstractCegarLoop]: Abstraction has 88 states and 162 transitions. [2025-04-13 22:37:01,915 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 22:37:01,915 INFO L278 IsEmpty]: Start isEmpty. Operand 88 states and 162 transitions. [2025-04-13 22:37:01,916 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 22:37:01,916 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 22:37:01,916 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 22:37:01,916 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 22:37:01,916 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 22:37:01,916 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 22:37:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1411703223, now seen corresponding path program 2 times [2025-04-13 22:37:01,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 22:37:01,916 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956491943] [2025-04-13 22:37:01,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 22:37:01,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 22:37:01,927 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 1 equivalence classes. [2025-04-13 22:37:01,938 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 22:37:01,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 22:37:01,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 22:37:02,054 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 22:37:02,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 22:37:02,054 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956491943] [2025-04-13 22:37:02,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956491943] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 22:37:02,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 22:37:02,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 22:37:02,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324382023] [2025-04-13 22:37:02,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 22:37:02,054 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 22:37:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 22:37:02,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 22:37:02,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 22:37:02,055 INFO L87 Difference]: Start difference. First operand 88 states and 162 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 22:37:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 22:37:02,150 INFO L93 Difference]: Finished difference Result 132 states and 244 transitions. [2025-04-13 22:37:02,150 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 22:37:02,151 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2025-04-13 22:37:02,151 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 22:37:02,151 INFO L225 Difference]: With dead ends: 132 [2025-04-13 22:37:02,151 INFO L226 Difference]: Without dead ends: 70 [2025-04-13 22:37:02,152 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-04-13 22:37:02,152 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 22:37:02,152 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 22:37:02,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-04-13 22:37:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-04-13 22:37:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 69 states have internal predecessors, (120), 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 22:37:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 120 transitions. [2025-04-13 22:37:02,159 INFO L79 Accepts]: Start accepts. Automaton has 70 states and 120 transitions. Word has length 29 [2025-04-13 22:37:02,159 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 22:37:02,159 INFO L485 AbstractCegarLoop]: Abstraction has 70 states and 120 transitions. [2025-04-13 22:37:02,159 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 22:37:02,159 INFO L278 IsEmpty]: Start isEmpty. Operand 70 states and 120 transitions. [2025-04-13 22:37:02,160 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 22:37:02,160 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 22:37:02,160 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 22:37:02,160 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 22:37:02,160 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 22:37:02,160 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 22:37:02,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1068558771, now seen corresponding path program 3 times [2025-04-13 22:37:02,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 22:37:02,161 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890487730] [2025-04-13 22:37:02,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 22:37:02,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 22:37:02,174 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 1 equivalence classes. [2025-04-13 22:37:02,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 22:37:02,182 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 22:37:02,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 22:37:02,262 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 22:37:02,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 22:37:02,262 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890487730] [2025-04-13 22:37:02,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890487730] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 22:37:02,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 22:37:02,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 22:37:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129841349] [2025-04-13 22:37:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 22:37:02,263 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 22:37:02,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 22:37:02,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 22:37:02,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 22:37:02,263 INFO L87 Difference]: Start difference. First operand 70 states and 120 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 22:37:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 22:37:02,303 INFO L93 Difference]: Finished difference Result 70 states and 120 transitions. [2025-04-13 22:37:02,303 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 22:37:02,303 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2025-04-13 22:37:02,303 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 22:37:02,304 INFO L225 Difference]: With dead ends: 70 [2025-04-13 22:37:02,304 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 22:37:02,304 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-04-13 22:37:02,306 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 22:37:02,306 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 22:37:02,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 22:37:02,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 22:37:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 22:37:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 22:37:02,307 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2025-04-13 22:37:02,307 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 22:37:02,307 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 22:37:02,307 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 22:37:02,307 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 22:37:02,307 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 22:37:02,310 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 22:37:02,310 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 22:37:02,310 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 22:37:02,310 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 22:37:02,312 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1] [2025-04-13 22:37:02,313 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 22:37:02,313 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 22:37:02,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 10:37:02 BasicIcfg [2025-04-13 22:37:02,315 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 22:37:02,316 INFO L158 Benchmark]: Toolchain (without parser) took 1821.68ms. Allocated memory is still 155.2MB. Free memory was 111.9MB in the beginning and 54.3MB in the end (delta: 57.6MB). Peak memory consumption was 57.2MB. Max. memory is 8.0GB. [2025-04-13 22:37:02,316 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 22:37:02,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.82ms. Allocated memory is still 155.2MB. Free memory was 111.1MB in the beginning and 97.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 22:37:02,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.13ms. Allocated memory is still 155.2MB. Free memory was 97.2MB in the beginning and 95.5MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 22:37:02,316 INFO L158 Benchmark]: Boogie Preprocessor took 26.69ms. Allocated memory is still 155.2MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 22:37:02,316 INFO L158 Benchmark]: IcfgBuilder took 419.52ms. Allocated memory is still 155.2MB. Free memory was 93.8MB in the beginning and 64.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2025-04-13 22:37:02,317 INFO L158 Benchmark]: TraceAbstraction took 1145.79ms. Allocated memory is still 155.2MB. Free memory was 64.5MB in the beginning and 54.3MB in the end (delta: 10.2MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2025-04-13 22:37:02,319 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.82ms. Allocated memory is still 155.2MB. Free memory was 111.1MB in the beginning and 97.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.13ms. Allocated memory is still 155.2MB. Free memory was 97.2MB in the beginning and 95.5MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.69ms. Allocated memory is still 155.2MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 419.52ms. Allocated memory is still 155.2MB. Free memory was 93.8MB in the beginning and 64.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1145.79ms. Allocated memory is still 155.2MB. Free memory was 64.5MB in the beginning and 54.3MB in the end (delta: 10.2MB). Peak memory consumption was 11.0MB. 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 - PositiveResult [Line: 81]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 51 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 11 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 255 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 22:37:02,333 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...