/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:09:02,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:09:03,036 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 18:09:03,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:09:03,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:09:03,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:09:03,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:09:03,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:09:03,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:09:03,064 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:09:03,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:09:03,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:09:03,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:09:03,065 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:09:03,066 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:09:03,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:09:03,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:09:03,066 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:09:03,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:09:03,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:09:03,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:09:03,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:09:03,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:09:03,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:09:03,067 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 [2025-04-13 18:09:03,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:09:03,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:09:03,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:09:03,311 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:09:03,312 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:09:03,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-04-13 18:09:04,590 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dfcfc1a/d312d341ddc5440799e98608a8f4f304/FLAG87d23a5ae [2025-04-13 18:09:04,799 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:09:04,800 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-04-13 18:09:04,806 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dfcfc1a/d312d341ddc5440799e98608a8f4f304/FLAG87d23a5ae [2025-04-13 18:09:05,593 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dfcfc1a/d312d341ddc5440799e98608a8f4f304 [2025-04-13 18:09:05,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:09:05,598 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:09:05,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:09:05,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:09:05,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:09:05,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65be935d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05, skipping insertion in model container [2025-04-13 18:09:05,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:09:05,766 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/popl20-bad-buffer-mult-alt2.wvr.c[4226,4239] [2025-04-13 18:09:05,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:09:05,787 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:09:05,826 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/popl20-bad-buffer-mult-alt2.wvr.c[4226,4239] [2025-04-13 18:09:05,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:09:05,843 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:09:05,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05 WrapperNode [2025-04-13 18:09:05,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:09:05,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:09:05,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:09:05,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:09:05,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,896 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 289 [2025-04-13 18:09:05,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:09:05,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:09:05,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:09:05,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:09:05,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,945 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-04-13 18:09:05,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,958 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:09:05,980 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:09:05,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:09:05,980 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:09:05,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (1/1) ... [2025-04-13 18:09:05,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:09:06,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:06,014 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 18:09:06,020 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 18:09:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:09:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:09:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:09:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 18:09:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 18:09:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:09:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 18:09:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 18:09:06,040 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 18:09:06,150 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:09:06,152 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:09:06,455 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:09:06,456 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:09:06,456 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:09:06,770 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 18:09:06,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:09:06 BoogieIcfgContainer [2025-04-13 18:09:06,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:09:06,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:09:06,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:09:06,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:09:06,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:09:05" (1/3) ... [2025-04-13 18:09:06,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f978790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:09:06, skipping insertion in model container [2025-04-13 18:09:06,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:09:05" (2/3) ... [2025-04-13 18:09:06,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f978790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:09:06, skipping insertion in model container [2025-04-13 18:09:06,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:09:06" (3/3) ... [2025-04-13 18:09:06,780 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2025-04-13 18:09:06,792 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:09:06,794 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt2.wvr.c that has 5 procedures, 42 locations, 43 edges, 1 initial locations, 6 loop locations, and 1 error locations. [2025-04-13 18:09:06,794 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:09:06,867 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 18:09:06,889 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 47 transitions, 122 flow [2025-04-13 18:09:07,044 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3372 states, 3371 states have (on average 4.338178582023138) internal successors, (14624), 3371 states have internal predecessors, (14624), 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 18:09:07,065 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:09:07,074 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;@444885cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:09:07,074 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 18:09:07,087 INFO L278 IsEmpty]: Start isEmpty. Operand has 3372 states, 3371 states have (on average 4.338178582023138) internal successors, (14624), 3371 states have internal predecessors, (14624), 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 18:09:07,124 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:09:07,125 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:07,125 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 18:09:07,126 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:07,129 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:07,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1481151786, now seen corresponding path program 1 times [2025-04-13 18:09:07,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:07,135 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46127307] [2025-04-13 18:09:07,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:07,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:07,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 18:09:07,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:09:07,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:07,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:07,686 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 18:09:07,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:07,686 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46127307] [2025-04-13 18:09:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46127307] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:09:07,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:09:07,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:09:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138733146] [2025-04-13 18:09:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:09:07,691 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:09:07,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:07,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:09:07,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:09:07,714 INFO L87 Difference]: Start difference. First operand has 3372 states, 3371 states have (on average 4.338178582023138) internal successors, (14624), 3371 states have internal predecessors, (14624), 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 5 states, 5 states have (on average 5.6) internal successors, (28), 4 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 18:09:08,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:08,027 INFO L93 Difference]: Finished difference Result 5186 states and 22426 transitions. [2025-04-13 18:09:08,028 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:09:08,029 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 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 18:09:08,029 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:08,095 INFO L225 Difference]: With dead ends: 5186 [2025-04-13 18:09:08,095 INFO L226 Difference]: Without dead ends: 4408 [2025-04-13 18:09:08,103 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:09:08,105 INFO L437 NwaCegarLoop]: 22 mSDtfsCounter, 78 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:08,106 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 44 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2025-04-13 18:09:08,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 3890. [2025-04-13 18:09:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 3889 states have (on average 4.344561583954744) internal successors, (16896), 3889 states have internal predecessors, (16896), 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 18:09:08,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 16896 transitions. [2025-04-13 18:09:08,418 INFO L79 Accepts]: Start accepts. Automaton has 3890 states and 16896 transitions. Word has length 28 [2025-04-13 18:09:08,418 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:08,418 INFO L485 AbstractCegarLoop]: Abstraction has 3890 states and 16896 transitions. [2025-04-13 18:09:08,419 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 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 18:09:08,419 INFO L278 IsEmpty]: Start isEmpty. Operand 3890 states and 16896 transitions. [2025-04-13 18:09:08,434 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:09:08,434 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:08,434 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, 1, 1] [2025-04-13 18:09:08,435 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:09:08,435 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:08,435 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1490699258, now seen corresponding path program 1 times [2025-04-13 18:09:08,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:08,435 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666019402] [2025-04-13 18:09:08,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:08,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:08,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 18:09:08,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:09:08,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:08,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:08,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:08,718 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666019402] [2025-04-13 18:09:08,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666019402] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:08,718 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18948672] [2025-04-13 18:09:08,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:08,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:08,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:08,721 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 18:09:08,725 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 18:09:08,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 18:09:08,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:09:08,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:08,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:08,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-13 18:09:08,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:09,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:09,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18948672] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:09,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 18:09:09,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7] total 15 [2025-04-13 18:09:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256912232] [2025-04-13 18:09:09,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:09:09,205 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 18:09:09,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:09,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 18:09:09,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:09:09,206 INFO L87 Difference]: Start difference. First operand 3890 states and 16896 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 18:09:09,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:09,535 INFO L93 Difference]: Finished difference Result 6356 states and 27608 transitions. [2025-04-13 18:09:09,535 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:09:09,535 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 31 [2025-04-13 18:09:09,535 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:09,580 INFO L225 Difference]: With dead ends: 6356 [2025-04-13 18:09:09,581 INFO L226 Difference]: Without dead ends: 5970 [2025-04-13 18:09:09,584 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:09:09,585 INFO L437 NwaCegarLoop]: 45 mSDtfsCounter, 124 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:09,585 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 93 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5970 states. [2025-04-13 18:09:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5970 to 4828. [2025-04-13 18:09:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4828 states, 4827 states have (on average 4.346384918168635) internal successors, (20980), 4827 states have internal predecessors, (20980), 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 18:09:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4828 states to 4828 states and 20980 transitions. [2025-04-13 18:09:09,841 INFO L79 Accepts]: Start accepts. Automaton has 4828 states and 20980 transitions. Word has length 31 [2025-04-13 18:09:09,842 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:09,842 INFO L485 AbstractCegarLoop]: Abstraction has 4828 states and 20980 transitions. [2025-04-13 18:09:09,842 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 18:09:09,842 INFO L278 IsEmpty]: Start isEmpty. Operand 4828 states and 20980 transitions. [2025-04-13 18:09:09,857 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:09:09,857 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:09,857 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, 1, 1] [2025-04-13 18:09:09,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 18:09:10,058 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:10,059 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:10,059 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:10,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1304545448, now seen corresponding path program 2 times [2025-04-13 18:09:10,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:10,059 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937096352] [2025-04-13 18:09:10,059 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:09:10,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:10,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-04-13 18:09:10,084 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:09:10,084 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 18:09:10,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:10,216 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 18:09:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:10,216 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937096352] [2025-04-13 18:09:10,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937096352] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:09:10,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:09:10,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:09:10,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129311358] [2025-04-13 18:09:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:09:10,217 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:09:10,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:10,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:09:10,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:09:10,217 INFO L87 Difference]: Start difference. First operand 4828 states and 20980 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 18:09:10,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:10,575 INFO L93 Difference]: Finished difference Result 10663 states and 46423 transitions. [2025-04-13 18:09:10,576 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:09:10,576 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2025-04-13 18:09:10,576 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:10,615 INFO L225 Difference]: With dead ends: 10663 [2025-04-13 18:09:10,615 INFO L226 Difference]: Without dead ends: 4829 [2025-04-13 18:09:10,627 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:09:10,627 INFO L437 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:10,627 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 48 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2025-04-13 18:09:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 4829. [2025-04-13 18:09:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 4828 states have (on average 4.345691797845899) internal successors, (20981), 4828 states have internal predecessors, (20981), 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 18:09:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 20981 transitions. [2025-04-13 18:09:10,894 INFO L79 Accepts]: Start accepts. Automaton has 4829 states and 20981 transitions. Word has length 31 [2025-04-13 18:09:10,894 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:10,894 INFO L485 AbstractCegarLoop]: Abstraction has 4829 states and 20981 transitions. [2025-04-13 18:09:10,894 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 18:09:10,894 INFO L278 IsEmpty]: Start isEmpty. Operand 4829 states and 20981 transitions. [2025-04-13 18:09:10,907 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:09:10,907 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:10,907 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, 1, 1, 1] [2025-04-13 18:09:10,908 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:09:10,908 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:10,908 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:10,908 INFO L85 PathProgramCache]: Analyzing trace with hash -444516011, now seen corresponding path program 1 times [2025-04-13 18:09:10,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:10,908 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134056069] [2025-04-13 18:09:10,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:10,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:10,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-04-13 18:09:10,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:09:10,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:10,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:09:11,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:11,095 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134056069] [2025-04-13 18:09:11,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134056069] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:09:11,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:09:11,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:09:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41266943] [2025-04-13 18:09:11,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:09:11,095 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:09:11,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:11,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:09:11,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:09:11,095 INFO L87 Difference]: Start difference. First operand 4829 states and 20981 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 18:09:11,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:11,478 INFO L93 Difference]: Finished difference Result 7903 states and 34537 transitions. [2025-04-13 18:09:11,478 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:09:11,478 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2025-04-13 18:09:11,478 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:11,514 INFO L225 Difference]: With dead ends: 7903 [2025-04-13 18:09:11,514 INFO L226 Difference]: Without dead ends: 7265 [2025-04-13 18:09:11,519 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 18:09:11,519 INFO L437 NwaCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:11,519 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 57 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7265 states. [2025-04-13 18:09:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7265 to 4899. [2025-04-13 18:09:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4898 states have (on average 4.351367905267456) internal successors, (21313), 4898 states have internal predecessors, (21313), 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 18:09:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 21313 transitions. [2025-04-13 18:09:11,806 INFO L79 Accepts]: Start accepts. Automaton has 4899 states and 21313 transitions. Word has length 32 [2025-04-13 18:09:11,807 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:11,807 INFO L485 AbstractCegarLoop]: Abstraction has 4899 states and 21313 transitions. [2025-04-13 18:09:11,807 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 18:09:11,807 INFO L278 IsEmpty]: Start isEmpty. Operand 4899 states and 21313 transitions. [2025-04-13 18:09:11,822 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-04-13 18:09:11,822 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:11,822 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, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:11,822 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 18:09:11,822 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:11,823 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash 6697371, now seen corresponding path program 1 times [2025-04-13 18:09:11,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:11,823 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91130100] [2025-04-13 18:09:11,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:11,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:11,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-13 18:09:11,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 18:09:11,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:11,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:12,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:12,475 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91130100] [2025-04-13 18:09:12,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91130100] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:12,475 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561084520] [2025-04-13 18:09:12,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:12,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:12,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:12,479 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 18:09:12,480 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 18:09:12,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-13 18:09:12,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 18:09:12,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:12,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:12,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 18:09:12,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:12,610 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 23 treesize of output 1 [2025-04-13 18:09:12,913 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-04-13 18:09:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:12,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:13,327 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2025-04-13 18:09:13,334 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2025-04-13 18:09:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561084520] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:13,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:13,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-04-13 18:09:13,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594394373] [2025-04-13 18:09:13,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:13,386 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:09:13,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:13,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:09:13,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:09:13,387 INFO L87 Difference]: Start difference. First operand 4899 states and 21313 transitions. Second operand has 18 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 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 18:09:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:16,003 INFO L93 Difference]: Finished difference Result 24776 states and 107625 transitions. [2025-04-13 18:09:16,003 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:09:16,003 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 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 35 [2025-04-13 18:09:16,004 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:16,103 INFO L225 Difference]: With dead ends: 24776 [2025-04-13 18:09:16,103 INFO L226 Difference]: Without dead ends: 20655 [2025-04-13 18:09:16,116 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:09:16,117 INFO L437 NwaCegarLoop]: 47 mSDtfsCounter, 545 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:16,117 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 487 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:09:16,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20655 states. [2025-04-13 18:09:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20655 to 11542. [2025-04-13 18:09:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11542 states, 11541 states have (on average 4.342084741356902) internal successors, (50112), 11541 states have internal predecessors, (50112), 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 18:09:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11542 states to 11542 states and 50112 transitions. [2025-04-13 18:09:17,558 INFO L79 Accepts]: Start accepts. Automaton has 11542 states and 50112 transitions. Word has length 35 [2025-04-13 18:09:17,558 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:17,558 INFO L485 AbstractCegarLoop]: Abstraction has 11542 states and 50112 transitions. [2025-04-13 18:09:17,558 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 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 18:09:17,558 INFO L278 IsEmpty]: Start isEmpty. Operand 11542 states and 50112 transitions. [2025-04-13 18:09:17,588 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-13 18:09:17,588 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:17,589 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:17,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-13 18:09:17,793 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:17,793 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:17,793 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2120451806, now seen corresponding path program 1 times [2025-04-13 18:09:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:17,794 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169454501] [2025-04-13 18:09:17,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:17,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:17,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 18:09:17,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 18:09:17,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:17,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:09:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:18,361 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169454501] [2025-04-13 18:09:18,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169454501] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:18,361 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031746356] [2025-04-13 18:09:18,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:18,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:18,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:18,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:09:18,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 18:09:18,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 18:09:18,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 18:09:18,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:18,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:18,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:09:18,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:18,647 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 18:09:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:09:18,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:18,709 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:09:18,709 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-04-13 18:09:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:09:18,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031746356] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:18,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:18,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 4] total 13 [2025-04-13 18:09:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013562036] [2025-04-13 18:09:18,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:18,750 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:09:18,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:18,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:09:18,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:09:18,750 INFO L87 Difference]: Start difference. First operand 11542 states and 50112 transitions. Second operand has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 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 18:09:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:21,948 INFO L93 Difference]: Finished difference Result 25281 states and 110006 transitions. [2025-04-13 18:09:21,949 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:09:21,950 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 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 37 [2025-04-13 18:09:21,950 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:22,036 INFO L225 Difference]: With dead ends: 25281 [2025-04-13 18:09:22,036 INFO L226 Difference]: Without dead ends: 20959 [2025-04-13 18:09:22,053 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:09:22,053 INFO L437 NwaCegarLoop]: 35 mSDtfsCounter, 118 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:22,053 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 343 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:09:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20959 states. [2025-04-13 18:09:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20959 to 10224. [2025-04-13 18:09:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10224 states, 10223 states have (on average 4.336202680230852) internal successors, (44329), 10223 states have internal predecessors, (44329), 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 18:09:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10224 states to 10224 states and 44329 transitions. [2025-04-13 18:09:23,314 INFO L79 Accepts]: Start accepts. Automaton has 10224 states and 44329 transitions. Word has length 37 [2025-04-13 18:09:23,314 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:23,314 INFO L485 AbstractCegarLoop]: Abstraction has 10224 states and 44329 transitions. [2025-04-13 18:09:23,314 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 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 18:09:23,314 INFO L278 IsEmpty]: Start isEmpty. Operand 10224 states and 44329 transitions. [2025-04-13 18:09:23,335 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:09:23,335 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:23,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:23,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-13 18:09:23,539 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:23,539 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:23,539 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:23,539 INFO L85 PathProgramCache]: Analyzing trace with hash 263891831, now seen corresponding path program 1 times [2025-04-13 18:09:23,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:23,539 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593945051] [2025-04-13 18:09:23,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:23,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:23,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-13 18:09:23,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:09:23,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:23,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:09:23,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:23,599 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593945051] [2025-04-13 18:09:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593945051] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:09:23,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:09:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:09:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189182482] [2025-04-13 18:09:23,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:09:23,600 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 18:09:23,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:23,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 18:09:23,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:09:23,600 INFO L87 Difference]: Start difference. First operand 10224 states and 44329 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 18:09:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:25,339 INFO L93 Difference]: Finished difference Result 17030 states and 74036 transitions. [2025-04-13 18:09:25,340 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 18:09:25,340 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2025-04-13 18:09:25,340 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:25,456 INFO L225 Difference]: With dead ends: 17030 [2025-04-13 18:09:25,456 INFO L226 Difference]: Without dead ends: 12586 [2025-04-13 18:09:25,463 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 18:09:25,464 INFO L437 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:25,464 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:09:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12586 states. [2025-04-13 18:09:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12586 to 12131. [2025-04-13 18:09:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12131 states, 12130 states have (on average 4.2919208573784005) internal successors, (52061), 12130 states have internal predecessors, (52061), 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 18:09:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12131 states to 12131 states and 52061 transitions. [2025-04-13 18:09:26,933 INFO L79 Accepts]: Start accepts. Automaton has 12131 states and 52061 transitions. Word has length 38 [2025-04-13 18:09:26,933 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:26,933 INFO L485 AbstractCegarLoop]: Abstraction has 12131 states and 52061 transitions. [2025-04-13 18:09:26,933 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 18:09:26,933 INFO L278 IsEmpty]: Start isEmpty. Operand 12131 states and 52061 transitions. [2025-04-13 18:09:26,956 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-04-13 18:09:26,956 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:26,957 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1] [2025-04-13 18:09:26,957 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 18:09:26,957 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:26,957 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:26,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1728406490, now seen corresponding path program 2 times [2025-04-13 18:09:26,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:26,957 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437130440] [2025-04-13 18:09:26,957 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:09:26,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:26,964 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-04-13 18:09:26,973 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-04-13 18:09:26,973 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:09:26,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:09:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:27,025 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437130440] [2025-04-13 18:09:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437130440] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:27,025 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243859833] [2025-04-13 18:09:27,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:09:27,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:27,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:27,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:09:27,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 18:09:27,079 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-04-13 18:09:27,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-04-13 18:09:27,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:09:27,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:27,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 18:09:27,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:09:27,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:09:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243859833] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:27,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:27,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2025-04-13 18:09:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496582811] [2025-04-13 18:09:27,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:27,223 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:09:27,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:27,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:09:27,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:09:27,224 INFO L87 Difference]: Start difference. First operand 12131 states and 52061 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 18:09:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:30,376 INFO L93 Difference]: Finished difference Result 27586 states and 119393 transitions. [2025-04-13 18:09:30,376 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:09:30,376 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 39 [2025-04-13 18:09:30,376 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:30,458 INFO L225 Difference]: With dead ends: 27586 [2025-04-13 18:09:30,458 INFO L226 Difference]: Without dead ends: 21801 [2025-04-13 18:09:30,472 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:09:30,472 INFO L437 NwaCegarLoop]: 15 mSDtfsCounter, 84 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:30,472 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 39 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21801 states. [2025-04-13 18:09:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21801 to 18719. [2025-04-13 18:09:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18719 states, 18718 states have (on average 4.3996687680307724) internal successors, (82353), 18718 states have internal predecessors, (82353), 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 18:09:33,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18719 states to 18719 states and 82353 transitions. [2025-04-13 18:09:33,031 INFO L79 Accepts]: Start accepts. Automaton has 18719 states and 82353 transitions. Word has length 39 [2025-04-13 18:09:33,031 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:33,031 INFO L485 AbstractCegarLoop]: Abstraction has 18719 states and 82353 transitions. [2025-04-13 18:09:33,031 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 18:09:33,031 INFO L278 IsEmpty]: Start isEmpty. Operand 18719 states and 82353 transitions. [2025-04-13 18:09:33,068 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-04-13 18:09:33,068 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:33,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:33,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 18:09:33,268 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:33,269 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:33,269 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1178342147, now seen corresponding path program 1 times [2025-04-13 18:09:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:33,269 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326137554] [2025-04-13 18:09:33,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:09:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:33,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-13 18:09:33,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:09:33,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:33,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:09:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:33,334 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326137554] [2025-04-13 18:09:33,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326137554] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:09:33,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:09:33,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:09:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336017109] [2025-04-13 18:09:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:09:33,335 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:09:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:33,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:09:33,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:09:33,335 INFO L87 Difference]: Start difference. First operand 18719 states and 82353 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 18:09:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:37,770 INFO L93 Difference]: Finished difference Result 38107 states and 167004 transitions. [2025-04-13 18:09:37,770 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:09:37,770 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2025-04-13 18:09:37,770 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:37,994 INFO L225 Difference]: With dead ends: 38107 [2025-04-13 18:09:37,994 INFO L226 Difference]: Without dead ends: 23513 [2025-04-13 18:09:38,012 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:09:38,012 INFO L437 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:38,012 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:09:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23513 states. [2025-04-13 18:09:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23513 to 22032. [2025-04-13 18:09:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22032 states, 22031 states have (on average 4.360083518678226) internal successors, (96057), 22031 states have internal predecessors, (96057), 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 18:09:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22032 states to 22032 states and 96057 transitions. [2025-04-13 18:09:40,917 INFO L79 Accepts]: Start accepts. Automaton has 22032 states and 96057 transitions. Word has length 41 [2025-04-13 18:09:40,917 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:40,917 INFO L485 AbstractCegarLoop]: Abstraction has 22032 states and 96057 transitions. [2025-04-13 18:09:40,917 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 18:09:40,917 INFO L278 IsEmpty]: Start isEmpty. Operand 22032 states and 96057 transitions. [2025-04-13 18:09:40,958 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 18:09:40,958 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:40,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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 18:09:40,958 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 18:09:40,959 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:09:40,959 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:40,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1228574626, now seen corresponding path program 3 times [2025-04-13 18:09:40,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:40,959 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407138502] [2025-04-13 18:09:40,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:09:40,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:40,966 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 3 equivalence classes. [2025-04-13 18:09:41,000 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:09:41,001 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:09:41,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:42,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:42,008 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407138502] [2025-04-13 18:09:42,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407138502] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:42,008 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796898820] [2025-04-13 18:09:42,009 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:09:42,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:42,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:42,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:09:42,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-13 18:09:42,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 3 equivalence classes. [2025-04-13 18:09:42,115 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:09:42,115 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:09:42,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:42,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:09:42,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:42,560 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:09:42,561 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2025-04-13 18:09:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:42,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:42,858 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:09:42,858 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2025-04-13 18:09:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796898820] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:43,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:43,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 28 [2025-04-13 18:09:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575694089] [2025-04-13 18:09:43,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:43,045 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 18:09:43,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:43,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 18:09:43,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:09:43,046 INFO L87 Difference]: Start difference. First operand 22032 states and 96057 transitions. Second operand has 30 states, 29 states have (on average 4.241379310344827) internal successors, (123), 29 states have internal predecessors, (123), 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 18:10:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:10:22,553 INFO L93 Difference]: Finished difference Result 199792 states and 863699 transitions. [2025-04-13 18:10:22,553 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2025-04-13 18:10:22,553 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.241379310344827) internal successors, (123), 29 states have internal predecessors, (123), 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 42 [2025-04-13 18:10:22,553 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:10:23,723 INFO L225 Difference]: With dead ends: 199792 [2025-04-13 18:10:23,723 INFO L226 Difference]: Without dead ends: 183306 [2025-04-13 18:10:23,817 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3571 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1839, Invalid=9503, Unknown=0, NotChecked=0, Total=11342 [2025-04-13 18:10:23,818 INFO L437 NwaCegarLoop]: 228 mSDtfsCounter, 2214 mSDsluCounter, 3056 mSDsCounter, 0 mSdLazyCounter, 5101 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 5227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 5101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:10:23,819 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2214 Valid, 3284 Invalid, 5227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 5101 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 18:10:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183306 states. [2025-04-13 18:10:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183306 to 66805. [2025-04-13 18:10:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66805 states, 66804 states have (on average 4.555340997545057) internal successors, (304315), 66804 states have internal predecessors, (304315), 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 18:10:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66805 states to 66805 states and 304315 transitions. [2025-04-13 18:10:37,285 INFO L79 Accepts]: Start accepts. Automaton has 66805 states and 304315 transitions. Word has length 42 [2025-04-13 18:10:37,285 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:10:37,285 INFO L485 AbstractCegarLoop]: Abstraction has 66805 states and 304315 transitions. [2025-04-13 18:10:37,285 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.241379310344827) internal successors, (123), 29 states have internal predecessors, (123), 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 18:10:37,285 INFO L278 IsEmpty]: Start isEmpty. Operand 66805 states and 304315 transitions. [2025-04-13 18:10:37,430 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 18:10:37,430 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:10:37,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:10:37,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 18:10:37,631 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-04-13 18:10:37,631 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:10:37,632 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:10:37,632 INFO L85 PathProgramCache]: Analyzing trace with hash -63089141, now seen corresponding path program 1 times [2025-04-13 18:10:37,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:10:37,632 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611266189] [2025-04-13 18:10:37,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:10:37,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:10:37,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-13 18:10:37,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:10:37,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:10:37,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:10:37,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:10:37,824 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611266189] [2025-04-13 18:10:37,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611266189] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:10:37,824 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884694482] [2025-04-13 18:10:37,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:10:37,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:10:37,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:10:37,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-13 18:10:37,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-13 18:10:37,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:10:37,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:10:37,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:37,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:10:37,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:10:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:10:38,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:10:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:10:38,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884694482] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:10:38,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:10:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 24 [2025-04-13 18:10:38,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822752943] [2025-04-13 18:10:38,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:10:38,415 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:10:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:10:38,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:10:38,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:10:38,415 INFO L87 Difference]: Start difference. First operand 66805 states and 304315 transitions. Second operand has 25 states, 25 states have (on average 4.8) internal successors, (120), 24 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 18:11:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:11:19,940 INFO L93 Difference]: Finished difference Result 169451 states and 752720 transitions. [2025-04-13 18:11:19,940 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-04-13 18:11:19,940 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 24 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) Word has length 42 [2025-04-13 18:11:19,941 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:11:21,268 INFO L225 Difference]: With dead ends: 169451 [2025-04-13 18:11:21,268 INFO L226 Difference]: Without dead ends: 161230 [2025-04-13 18:11:21,334 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3399 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2060, Invalid=8242, Unknown=0, NotChecked=0, Total=10302 [2025-04-13 18:11:21,335 INFO L437 NwaCegarLoop]: 71 mSDtfsCounter, 1025 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:11:21,335 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 918 Invalid, 3798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-04-13 18:11:21,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161230 states. [2025-04-13 18:11:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161230 to 89483. [2025-04-13 18:11:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89483 states, 89482 states have (on average 4.631881272211171) internal successors, (414470), 89482 states have internal predecessors, (414470), 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 18:11:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89483 states to 89483 states and 414470 transitions. [2025-04-13 18:11:40,705 INFO L79 Accepts]: Start accepts. Automaton has 89483 states and 414470 transitions. Word has length 42 [2025-04-13 18:11:40,705 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:11:40,705 INFO L485 AbstractCegarLoop]: Abstraction has 89483 states and 414470 transitions. [2025-04-13 18:11:40,705 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 24 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 18:11:40,705 INFO L278 IsEmpty]: Start isEmpty. Operand 89483 states and 414470 transitions. [2025-04-13 18:11:40,904 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 18:11:40,904 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:11:40,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:11:40,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-13 18:11:41,104 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:41,105 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:11:41,105 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:11:41,105 INFO L85 PathProgramCache]: Analyzing trace with hash -336016833, now seen corresponding path program 2 times [2025-04-13 18:11:41,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:11:41,105 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899751470] [2025-04-13 18:11:41,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:11:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:11:41,114 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:11:41,130 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:11:41,130 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:11:41,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:11:41,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:11:41,336 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899751470] [2025-04-13 18:11:41,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899751470] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:11:41,336 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537420298] [2025-04-13 18:11:41,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:11:41,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:11:41,338 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:11:41,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-13 18:11:41,398 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:11:41,420 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:11:41,421 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:11:41,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:41,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:11:41,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:11:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:11:41,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:11:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:11:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537420298] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:11:41,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:11:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 22 [2025-04-13 18:11:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634956441] [2025-04-13 18:11:41,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:11:41,808 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:11:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:11:41,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:11:41,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:11:41,808 INFO L87 Difference]: Start difference. First operand 89483 states and 414470 transitions. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 22 states have internal predecessors, (101), 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 18:12:39,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:12:39,817 INFO L93 Difference]: Finished difference Result 176527 states and 769494 transitions. [2025-04-13 18:12:39,819 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2025-04-13 18:12:39,819 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 22 states have internal predecessors, (101), 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 42 [2025-04-13 18:12:39,819 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:12:41,180 INFO L225 Difference]: With dead ends: 176527 [2025-04-13 18:12:41,180 INFO L226 Difference]: Without dead ends: 175261 [2025-04-13 18:12:41,319 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12272 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4502, Invalid=26650, Unknown=0, NotChecked=0, Total=31152 [2025-04-13 18:12:41,322 INFO L437 NwaCegarLoop]: 72 mSDtfsCounter, 1054 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 5735 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 5735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:12:41,323 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 1029 Invalid, 5793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 5735 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-04-13 18:12:41,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175261 states. [2025-04-13 18:13:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175261 to 89555. [2025-04-13 18:13:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89555 states, 89554 states have (on average 4.631886906224177) internal successors, (414804), 89554 states have internal predecessors, (414804), 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 18:13:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89555 states to 89555 states and 414804 transitions. [2025-04-13 18:13:05,238 INFO L79 Accepts]: Start accepts. Automaton has 89555 states and 414804 transitions. Word has length 42 [2025-04-13 18:13:05,238 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:13:05,239 INFO L485 AbstractCegarLoop]: Abstraction has 89555 states and 414804 transitions. [2025-04-13 18:13:05,239 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 22 states have internal predecessors, (101), 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 18:13:05,239 INFO L278 IsEmpty]: Start isEmpty. Operand 89555 states and 414804 transitions. [2025-04-13 18:13:05,508 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 18:13:05,509 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:13:05,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:13:05,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-13 18:13:05,709 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:05,711 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:13:05,715 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:13:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1527108767, now seen corresponding path program 3 times [2025-04-13 18:13:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:13:05,716 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904808991] [2025-04-13 18:13:05,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:13:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:13:05,750 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:13:05,901 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:13:05,901 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:13:05,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:13:06,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:13:06,507 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904808991] [2025-04-13 18:13:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904808991] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:13:06,507 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265816453] [2025-04-13 18:13:06,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:13:06,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:06,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:13:06,514 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:13:06,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 18:13:06,592 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:13:06,624 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:13:06,624 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:13:06,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:06,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:13:06,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:13:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:13:06,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:13:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:13:07,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265816453] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:13:07,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:13:07,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 25 [2025-04-13 18:13:07,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240514427] [2025-04-13 18:13:07,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:13:07,145 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:13:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:13:07,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:13:07,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:13:07,149 INFO L87 Difference]: Start difference. First operand 89555 states and 414804 transitions. Second operand has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 25 states have internal predecessors, (112), 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 18:14:24,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:14:24,971 INFO L93 Difference]: Finished difference Result 176547 states and 772947 transitions. [2025-04-13 18:14:24,972 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 398 states. [2025-04-13 18:14:24,972 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 25 states have internal predecessors, (112), 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 42 [2025-04-13 18:14:24,973 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:14:26,519 INFO L225 Difference]: With dead ends: 176547 [2025-04-13 18:14:26,522 INFO L226 Difference]: Without dead ends: 171294 [2025-04-13 18:14:26,627 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73495 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=17985, Invalid=146445, Unknown=0, NotChecked=0, Total=164430 [2025-04-13 18:14:26,632 INFO L437 NwaCegarLoop]: 67 mSDtfsCounter, 2234 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 8015 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 8202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 8015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:14:26,635 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 1318 Invalid, 8202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 8015 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-04-13 18:14:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171294 states. [2025-04-13 18:14:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171294 to 103172. [2025-04-13 18:14:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103172 states, 103171 states have (on average 4.661358327436973) internal successors, (480917), 103171 states have internal predecessors, (480917), 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 18:14:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103172 states to 103172 states and 480917 transitions. [2025-04-13 18:14:55,872 INFO L79 Accepts]: Start accepts. Automaton has 103172 states and 480917 transitions. Word has length 42 [2025-04-13 18:14:55,872 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:14:55,872 INFO L485 AbstractCegarLoop]: Abstraction has 103172 states and 480917 transitions. [2025-04-13 18:14:55,873 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 25 states have internal predecessors, (112), 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 18:14:55,873 INFO L278 IsEmpty]: Start isEmpty. Operand 103172 states and 480917 transitions. [2025-04-13 18:14:56,114 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 18:14:56,115 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:14:56,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:14:56,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 18:14:56,320 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-04-13 18:14:56,320 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:14:56,321 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:14:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash 443002421, now seen corresponding path program 4 times [2025-04-13 18:14:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:14:56,321 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195365905] [2025-04-13 18:14:56,321 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:14:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:14:56,338 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:14:56,356 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:14:56,356 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:14:56,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:14:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:14:56,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:14:56,604 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195365905] [2025-04-13 18:14:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195365905] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:14:56,604 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866988636] [2025-04-13 18:14:56,604 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:14:56,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:14:56,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:14:56,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:14:56,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 18:14:56,678 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:14:56,706 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:14:56,706 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:14:56,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:14:56,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 18:14:56,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:14:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:14:57,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:14:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:14:57,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866988636] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:14:57,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:14:57,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 13] total 30 [2025-04-13 18:14:57,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97047411] [2025-04-13 18:14:57,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:14:57,522 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:14:57,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:14:57,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:14:57,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:14:57,523 INFO L87 Difference]: Start difference. First operand 103172 states and 480917 transitions. Second operand has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 30 states have internal predecessors, (113), 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 18:18:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:18:03,444 INFO L93 Difference]: Finished difference Result 379509 states and 1667485 transitions. [2025-04-13 18:18:03,445 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 688 states. [2025-04-13 18:18:03,445 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 30 states have internal predecessors, (113), 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 42 [2025-04-13 18:18:03,445 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:18:06,572 INFO L225 Difference]: With dead ends: 379509 [2025-04-13 18:18:06,573 INFO L226 Difference]: Without dead ends: 368597 [2025-04-13 18:18:06,737 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 703 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234882 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=45740, Invalid=450580, Unknown=0, NotChecked=0, Total=496320 [2025-04-13 18:18:06,738 INFO L437 NwaCegarLoop]: 96 mSDtfsCounter, 4240 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 12574 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4240 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 13053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 12574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:18:06,738 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4240 Valid, 1811 Invalid, 13053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [479 Valid, 12574 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2025-04-13 18:18:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368597 states. [2025-04-13 18:19:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368597 to 178520. [2025-04-13 18:19:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178520 states, 178519 states have (on average 4.763028025028149) internal successors, (850291), 178519 states have internal predecessors, (850291), 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 18:19:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178520 states to 178520 states and 850291 transitions. [2025-04-13 18:19:09,280 INFO L79 Accepts]: Start accepts. Automaton has 178520 states and 850291 transitions. Word has length 42 [2025-04-13 18:19:09,281 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:19:09,281 INFO L485 AbstractCegarLoop]: Abstraction has 178520 states and 850291 transitions. [2025-04-13 18:19:09,281 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 30 states have internal predecessors, (113), 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 18:19:09,282 INFO L278 IsEmpty]: Start isEmpty. Operand 178520 states and 850291 transitions. [2025-04-13 18:19:10,382 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:19:10,382 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:19:10,382 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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 18:19:10,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-13 18:19:10,582 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-13 18:19:10,583 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:19:10,583 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:19:10,583 INFO L85 PathProgramCache]: Analyzing trace with hash -991170517, now seen corresponding path program 4 times [2025-04-13 18:19:10,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:19:10,583 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976559280] [2025-04-13 18:19:10,583 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:19:10,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:19:10,593 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 18:19:10,620 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:19:10,620 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:19:10,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:19:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:19:11,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:19:11,090 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976559280] [2025-04-13 18:19:11,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976559280] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:19:11,090 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135582607] [2025-04-13 18:19:11,090 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:19:11,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:19:11,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:19:11,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:19:11,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 18:19:11,156 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 18:19:11,185 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:19:11,185 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:19:11,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:19:11,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 18:19:11,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:19:11,542 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:19:11,542 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 12 [2025-04-13 18:19:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:19:11,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:19:11,855 INFO L325 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2025-04-13 18:19:11,856 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 41 [2025-04-13 18:19:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:19:11,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135582607] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:19:11,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:19:11,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 22 [2025-04-13 18:19:11,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511090200] [2025-04-13 18:19:11,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:19:11,935 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:19:11,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:19:11,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:19:11,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:19:11,936 INFO L87 Difference]: Start difference. First operand 178520 states and 850291 transitions. Second operand has 24 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 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) Received shutdown request... [2025-04-13 18:20:23,430 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 18:20:23,430 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=609, Invalid=2583, Unknown=0, NotChecked=0, Total=3192 [2025-04-13 18:20:23,431 INFO L437 NwaCegarLoop]: 123 mSDtfsCounter, 1588 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:20:23,431 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1056 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:20:23,436 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-13 18:20:23,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 18:20:23,446 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:20:23,446 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:20:23,637 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 18:20:23,637 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (178520states) and FLOYD_HOARE automaton (currently 40 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (150389 states constructed, input type IntersectNwa). [2025-04-13 18:20:23,640 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-04-13 18:20:23,640 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 18:20:23,640 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-04-13 18:20:23,640 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-04-13 18:20:23,645 INFO L422 BasicCegarLoop]: Path program histogram: [4, 4, 2, 1, 1, 1, 1, 1] [2025-04-13 18:20:23,651 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:20:23,651 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:20:23,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:20:23 BasicIcfg [2025-04-13 18:20:23,653 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:20:23,658 INFO L158 Benchmark]: Toolchain (without parser) took 678056.18ms. Allocated memory was 142.6MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 99.7MB in the beginning and 951.5MB in the end (delta: -851.7MB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2025-04-13 18:20:23,658 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:20:23,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.32ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 83.6MB in the end (delta: 16.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 18:20:23,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.31ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.0MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:20:23,658 INFO L158 Benchmark]: Boogie Preprocessor took 82.14ms. Allocated memory is still 142.6MB. Free memory was 81.0MB in the beginning and 78.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:20:23,659 INFO L158 Benchmark]: RCFGBuilder took 791.07ms. Allocated memory is still 142.6MB. Free memory was 78.1MB in the beginning and 31.9MB in the end (delta: 46.2MB). Peak memory consumption was 61.5MB. Max. memory is 8.0GB. [2025-04-13 18:20:23,659 INFO L158 Benchmark]: TraceAbstraction took 676879.45ms. Allocated memory was 142.6MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 31.9MB in the beginning and 951.5MB in the end (delta: -919.5MB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2025-04-13 18:20:23,660 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.32ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 83.6MB in the end (delta: 16.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.31ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.0MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 82.14ms. Allocated memory is still 142.6MB. Free memory was 81.0MB in the beginning and 78.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 791.07ms. Allocated memory is still 142.6MB. Free memory was 78.1MB in the beginning and 31.9MB in the end (delta: 46.2MB). Peak memory consumption was 61.5MB. Max. memory is 8.0GB. * TraceAbstraction took 676879.45ms. Allocated memory was 142.6MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 31.9MB in the beginning and 951.5MB in the end (delta: -919.5MB). Peak memory consumption was 4.0GB. 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 - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (178520states) and FLOYD_HOARE automaton (currently 40 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (150389 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (178520states) and FLOYD_HOARE automaton (currently 40 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (150389 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (178520states) and FLOYD_HOARE automaton (currently 40 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (150389 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (178520states) and FLOYD_HOARE automaton (currently 40 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (150389 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (178520states) and FLOYD_HOARE automaton (currently 40 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (150389 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 70 locations, 79 edges, 5 error locations. Started 1 CEGAR loops. OverallTime: 676.7s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 2.2s, AutomataDifference: 500.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13400 SdHoareTripleChecker+Valid, 20.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13400 mSDsluCounter, 10602 SdHoareTripleChecker+Invalid, 17.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9710 mSDsCounter, 1008 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38436 IncrementalHoareTripleChecker+Invalid, 39444 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1008 mSolverCounterUnsat, 892 mSDtfsCounter, 38436 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2281 GetRequests, 655 SyntacticMatches, 5 SemanticMatches, 1621 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328717 ImplicationChecksByTransitivity, 47.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178520occurred in iteration=14, InterpolantAutomatonStates: 1490, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 157.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 561045 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 960 NumberOfCodeBlocks, 960 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1320 ConstructedInterpolants, 2 QuantifiedInterpolants, 18903 SizeOfPredicates, 190 NumberOfNonLiveVariables, 3065 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 35 InterpolantComputations, 6 PerfectInterpolantSequences, 84/185 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 could not prove your program: Timeout Completed graceful shutdown