/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/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:06:34,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:06:34,153 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 18:06:34,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:06:34,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:06:34,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:06:34,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:06:34,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:06:34,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:06:34,178 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:06:34,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:06:34,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:06:34,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:06:34,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:06:34,179 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:06:34,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:06:34,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:06:34,179 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:06:34,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:06:34,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:06:34,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:06:34,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:06:34,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:06:34,180 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:06:34,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:06:34,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:06:34,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:06:34,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:06:34,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:06:34,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:06:34,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:06:34,181 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 18:06:34,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:06:34,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:06:34,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:06:34,410 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:06:34,410 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:06:34,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2025-04-13 18:06:35,731 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff05a2f73/eada067a858544a1b5aab5b8db9dd918/FLAGadaf1c54c [2025-04-13 18:06:35,953 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:06:35,955 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2025-04-13 18:06:35,964 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff05a2f73/eada067a858544a1b5aab5b8db9dd918/FLAGadaf1c54c [2025-04-13 18:06:36,932 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff05a2f73/eada067a858544a1b5aab5b8db9dd918 [2025-04-13 18:06:36,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:06:36,936 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:06:36,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:06:36,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:06:36,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:06:36,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:06:36" (1/1) ... [2025-04-13 18:06:36,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386e8bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:36, skipping insertion in model container [2025-04-13 18:06:36,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:06:36" (1/1) ... [2025-04-13 18:06:36,952 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:06:37,115 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2025-04-13 18:06:37,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:06:37,136 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:06:37,174 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2025-04-13 18:06:37,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:06:37,190 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:06:37,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37 WrapperNode [2025-04-13 18:06:37,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:06:37,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:06:37,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:06:37,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:06:37,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,241 INFO L138 Inliner]: procedures = 28, calls = 58, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 370 [2025-04-13 18:06:37,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:06:37,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:06:37,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:06:37,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:06:37,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,270 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 18:06:37,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,281 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:06:37,291 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:06:37,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:06:37,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:06:37,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (1/1) ... [2025-04-13 18:06:37,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:06:37,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:37,322 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 18:06:37,325 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 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:06:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:06:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 18:06:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 18:06:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-13 18:06:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-13 18:06:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-13 18:06:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-13 18:06:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 18:06:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 18:06:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 18:06:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:06:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:06:37,341 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 18:06:37,438 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:06:37,440 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:06:37,823 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:06:37,824 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:06:37,824 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:06:38,296 INFO L313 CfgBuilder]: Removed 4 assume(true) statements. [2025-04-13 18:06:38,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:06:38 BoogieIcfgContainer [2025-04-13 18:06:38,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:06:38,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:06:38,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:06:38,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:06:38,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:06:36" (1/3) ... [2025-04-13 18:06:38,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1995d457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:06:38, skipping insertion in model container [2025-04-13 18:06:38,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:37" (2/3) ... [2025-04-13 18:06:38,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1995d457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:06:38, skipping insertion in model container [2025-04-13 18:06:38,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:06:38" (3/3) ... [2025-04-13 18:06:38,304 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2025-04-13 18:06:38,318 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:06:38,319 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-2.wvr.c that has 7 procedures, 53 locations, 51 edges, 1 initial locations, 5 loop locations, and 1 error locations. [2025-04-13 18:06:38,319 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:06:38,404 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-04-13 18:06:38,425 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 71 transitions, 208 flow [2025-04-13 18:06:38,939 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10300 states, 10299 states have (on average 5.164481988542577) internal successors, (53189), 10299 states have internal predecessors, (53189), 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 18:06:38,964 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:06:38,973 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;@5e9cd601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:06:38,973 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-04-13 18:06:39,008 INFO L278 IsEmpty]: Start isEmpty. Operand has 10300 states, 10299 states have (on average 5.164481988542577) internal successors, (53189), 10299 states have internal predecessors, (53189), 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 18:06:39,099 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-13 18:06:39,099 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:39,100 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] [2025-04-13 18:06:39,100 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:06:39,104 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1590808794, now seen corresponding path program 1 times [2025-04-13 18:06:39,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:39,109 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657068084] [2025-04-13 18:06:39,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:06:39,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:39,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 18:06:39,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 18:06:39,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:39,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:39,701 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 18:06:39,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:39,701 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657068084] [2025-04-13 18:06:39,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657068084] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:39,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:39,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:06:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123733649] [2025-04-13 18:06:39,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:39,706 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:06:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:39,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:06:39,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:06:39,745 INFO L87 Difference]: Start difference. First operand has 10300 states, 10299 states have (on average 5.164481988542577) internal successors, (53189), 10299 states have internal predecessors, (53189), 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 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 18:06:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:40,641 INFO L93 Difference]: Finished difference Result 26462 states and 137609 transitions. [2025-04-13 18:06:40,643 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:06:40,644 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 18:06:40,644 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:40,802 INFO L225 Difference]: With dead ends: 26462 [2025-04-13 18:06:40,802 INFO L226 Difference]: Without dead ends: 15102 [2025-04-13 18:06:40,825 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 18:06:40,827 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:40,827 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:06:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15102 states. [2025-04-13 18:06:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15102 to 15102. [2025-04-13 18:06:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15102 states, 15101 states have (on average 5.050658896761804) internal successors, (76270), 15101 states have internal predecessors, (76270), 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 18:06:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15102 states to 15102 states and 76270 transitions. [2025-04-13 18:06:41,848 INFO L79 Accepts]: Start accepts. Automaton has 15102 states and 76270 transitions. Word has length 37 [2025-04-13 18:06:41,849 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:41,849 INFO L485 AbstractCegarLoop]: Abstraction has 15102 states and 76270 transitions. [2025-04-13 18:06:41,850 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 18:06:41,850 INFO L278 IsEmpty]: Start isEmpty. Operand 15102 states and 76270 transitions. [2025-04-13 18:06:41,908 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:06:41,908 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:41,908 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 18:06:41,909 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:06:41,909 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:06:41,910 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:41,910 INFO L85 PathProgramCache]: Analyzing trace with hash -394708392, now seen corresponding path program 1 times [2025-04-13 18:06:41,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:41,910 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889976313] [2025-04-13 18:06:41,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:06:41,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:41,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-13 18:06:41,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:06:41,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:41,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:42,218 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 18:06:42,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:42,219 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889976313] [2025-04-13 18:06:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889976313] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:42,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:06:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31011981] [2025-04-13 18:06:42,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:42,220 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 18:06:42,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:42,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 18:06:42,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:06:42,220 INFO L87 Difference]: Start difference. First operand 15102 states and 76270 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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 18:06:43,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:43,805 INFO L93 Difference]: Finished difference Result 36348 states and 185986 transitions. [2025-04-13 18:06:43,805 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:06:43,805 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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 18:06:43,805 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:44,169 INFO L225 Difference]: With dead ends: 36348 [2025-04-13 18:06:44,169 INFO L226 Difference]: Without dead ends: 36316 [2025-04-13 18:06:44,185 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:06:44,186 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 101 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:44,186 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 24 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:06:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36316 states. [2025-04-13 18:06:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36316 to 17106. [2025-04-13 18:06:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17106 states, 17105 states have (on average 5.049108447822274) internal successors, (86365), 17105 states have internal predecessors, (86365), 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 18:06:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17106 states to 17106 states and 86365 transitions. [2025-04-13 18:06:45,294 INFO L79 Accepts]: Start accepts. Automaton has 17106 states and 86365 transitions. Word has length 38 [2025-04-13 18:06:45,294 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:45,294 INFO L485 AbstractCegarLoop]: Abstraction has 17106 states and 86365 transitions. [2025-04-13 18:06:45,295 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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 18:06:45,295 INFO L278 IsEmpty]: Start isEmpty. Operand 17106 states and 86365 transitions. [2025-04-13 18:06:45,364 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:06:45,364 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:45,364 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 18:06:45,365 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 18:06:45,366 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:06:45,366 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:45,366 INFO L85 PathProgramCache]: Analyzing trace with hash -972682496, now seen corresponding path program 2 times [2025-04-13 18:06:45,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:45,367 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932400334] [2025-04-13 18:06:45,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:06:45,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:45,385 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-04-13 18:06:45,410 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 38 statements. [2025-04-13 18:06:45,410 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 18:06:45,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:45,643 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 18:06:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:45,643 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932400334] [2025-04-13 18:06:45,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932400334] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:45,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:45,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:06:45,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234592298] [2025-04-13 18:06:45,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:45,644 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 18:06:45,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:45,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 18:06:45,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:06:45,644 INFO L87 Difference]: Start difference. First operand 17106 states and 86365 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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 18:06:46,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:46,809 INFO L93 Difference]: Finished difference Result 36316 states and 185891 transitions. [2025-04-13 18:06:46,812 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:06:46,812 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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 18:06:46,812 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:46,998 INFO L225 Difference]: With dead ends: 36316 [2025-04-13 18:06:46,998 INFO L226 Difference]: Without dead ends: 36229 [2025-04-13 18:06:47,017 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:06:47,018 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 113 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:47,018 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 23 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:06:47,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36229 states. [2025-04-13 18:06:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36229 to 17190. [2025-04-13 18:06:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17190 states, 17189 states have (on average 5.034964221304323) internal successors, (86546), 17189 states have internal predecessors, (86546), 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 18:06:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17190 states to 17190 states and 86546 transitions. [2025-04-13 18:06:47,949 INFO L79 Accepts]: Start accepts. Automaton has 17190 states and 86546 transitions. Word has length 38 [2025-04-13 18:06:47,949 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:47,949 INFO L485 AbstractCegarLoop]: Abstraction has 17190 states and 86546 transitions. [2025-04-13 18:06:47,949 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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 18:06:47,949 INFO L278 IsEmpty]: Start isEmpty. Operand 17190 states and 86546 transitions. [2025-04-13 18:06:47,995 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-04-13 18:06:47,995 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:47,995 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] [2025-04-13 18:06:47,995 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:06:47,996 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:06:47,996 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1478985262, now seen corresponding path program 1 times [2025-04-13 18:06:47,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:47,996 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490780629] [2025-04-13 18:06:47,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:06:47,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:48,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-04-13 18:06:48,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-04-13 18:06:48,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:48,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:48,287 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 18:06:48,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:48,287 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490780629] [2025-04-13 18:06:48,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490780629] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:48,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:48,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:06:48,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754888561] [2025-04-13 18:06:48,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:48,288 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:06:48,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:48,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:06:48,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:06:48,289 INFO L87 Difference]: Start difference. First operand 17190 states and 86546 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 18:06:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:48,984 INFO L93 Difference]: Finished difference Result 27199 states and 138119 transitions. [2025-04-13 18:06:48,984 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:06:48,984 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2025-04-13 18:06:48,984 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:49,064 INFO L225 Difference]: With dead ends: 27199 [2025-04-13 18:06:49,065 INFO L226 Difference]: Without dead ends: 12389 [2025-04-13 18:06:49,211 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 18:06:49,212 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:49,212 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 12 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:06:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12389 states. [2025-04-13 18:06:49,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12389 to 12389. [2025-04-13 18:06:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12389 states, 12388 states have (on average 5.123183726186633) internal successors, (63466), 12388 states have internal predecessors, (63466), 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 18:06:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12389 states to 12389 states and 63466 transitions. [2025-04-13 18:06:49,540 INFO L79 Accepts]: Start accepts. Automaton has 12389 states and 63466 transitions. Word has length 40 [2025-04-13 18:06:49,541 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:49,541 INFO L485 AbstractCegarLoop]: Abstraction has 12389 states and 63466 transitions. [2025-04-13 18:06:49,541 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 18:06:49,541 INFO L278 IsEmpty]: Start isEmpty. Operand 12389 states and 63466 transitions. [2025-04-13 18:06:49,569 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-04-13 18:06:49,570 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:49,570 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 18:06:49,570 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 18:06:49,570 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:06:49,570 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1994107800, now seen corresponding path program 1 times [2025-04-13 18:06:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:49,570 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471593663] [2025-04-13 18:06:49,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:06:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:49,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-13 18:06:49,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:06:49,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:49,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:49,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:49,734 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471593663] [2025-04-13 18:06:49,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471593663] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:49,734 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669835442] [2025-04-13 18:06:49,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:06:49,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:49,739 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 18:06:49,740 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 18:06:49,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-13 18:06:49,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:06:49,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:49,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:49,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:06:49,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:50,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669835442] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:50,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-04-13 18:06:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659970954] [2025-04-13 18:06:50,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:50,134 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 18:06:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:50,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 18:06:50,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:06:50,134 INFO L87 Difference]: Start difference. First operand 12389 states and 63466 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 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 18:06:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:51,847 INFO L93 Difference]: Finished difference Result 36000 states and 185224 transitions. [2025-04-13 18:06:51,847 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 18:06:51,848 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 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 18:06:51,848 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:51,970 INFO L225 Difference]: With dead ends: 36000 [2025-04-13 18:06:51,970 INFO L226 Difference]: Without dead ends: 21913 [2025-04-13 18:06:52,001 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:06:52,002 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 139 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:52,002 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 42 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:06:52,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21913 states. [2025-04-13 18:06:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21913 to 17331. [2025-04-13 18:06:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17331 states, 17330 states have (on average 5.01194460473168) internal successors, (86857), 17330 states have internal predecessors, (86857), 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 18:06:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17331 states to 17331 states and 86857 transitions. [2025-04-13 18:06:53,123 INFO L79 Accepts]: Start accepts. Automaton has 17331 states and 86857 transitions. Word has length 41 [2025-04-13 18:06:53,124 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:53,124 INFO L485 AbstractCegarLoop]: Abstraction has 17331 states and 86857 transitions. [2025-04-13 18:06:53,124 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 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 18:06:53,124 INFO L278 IsEmpty]: Start isEmpty. Operand 17331 states and 86857 transitions. [2025-04-13 18:06:53,163 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-04-13 18:06:53,163 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:53,163 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 18:06:53,170 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 18:06:53,363 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:53,364 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:06:53,365 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:53,365 INFO L85 PathProgramCache]: Analyzing trace with hash 272791718, now seen corresponding path program 1 times [2025-04-13 18:06:53,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:53,365 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299468915] [2025-04-13 18:06:53,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:06:53,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:53,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-13 18:06:53,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:06:53,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:53,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:53,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:53,642 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299468915] [2025-04-13 18:06:53,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299468915] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:53,643 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854924975] [2025-04-13 18:06:53,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:06:53,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:53,649 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 18:06:53,654 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 18:06:53,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-13 18:06:53,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:06:53,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:53,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:53,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:06:53,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:53,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:54,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854924975] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:54,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:54,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-04-13 18:06:54,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893937267] [2025-04-13 18:06:54,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:54,064 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 18:06:54,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:54,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 18:06:54,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:06:54,065 INFO L87 Difference]: Start difference. First operand 17331 states and 86857 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 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 18:06:55,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:55,258 INFO L93 Difference]: Finished difference Result 19770 states and 97414 transitions. [2025-04-13 18:06:55,258 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:06:55,259 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 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 18:06:55,259 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:55,333 INFO L225 Difference]: With dead ends: 19770 [2025-04-13 18:06:55,333 INFO L226 Difference]: Without dead ends: 12390 [2025-04-13 18:06:55,346 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:06:55,347 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:55,348 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 38 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:06:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12390 states. [2025-04-13 18:06:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12390 to 12390. [2025-04-13 18:06:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12390 states, 12389 states have (on average 5.122850916135281) internal successors, (63467), 12389 states have internal predecessors, (63467), 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 18:06:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 63467 transitions. [2025-04-13 18:06:55,856 INFO L79 Accepts]: Start accepts. Automaton has 12390 states and 63467 transitions. Word has length 41 [2025-04-13 18:06:55,856 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:55,856 INFO L485 AbstractCegarLoop]: Abstraction has 12390 states and 63467 transitions. [2025-04-13 18:06:55,856 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 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 18:06:55,856 INFO L278 IsEmpty]: Start isEmpty. Operand 12390 states and 63467 transitions. [2025-04-13 18:06:55,885 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 18:06:55,886 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:55,886 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, 1, 1, 1, 1, 1] [2025-04-13 18:06:55,893 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 18:06:56,090 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-04-13 18:06:56,090 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:06:56,091 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:56,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1038153696, now seen corresponding path program 2 times [2025-04-13 18:06:56,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:56,091 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242286402] [2025-04-13 18:06:56,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:06:56,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:56,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:06:56,132 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:06:56,133 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:06:56,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:56,202 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 18:06:56,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:56,202 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242286402] [2025-04-13 18:06:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242286402] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:56,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 18:06:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411348276] [2025-04-13 18:06:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:56,203 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:06:56,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:56,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:06:56,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:06:56,203 INFO L87 Difference]: Start difference. First operand 12390 states and 63467 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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 18:06:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:57,258 INFO L93 Difference]: Finished difference Result 30323 states and 157175 transitions. [2025-04-13 18:06:57,259 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:06:57,259 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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 42 [2025-04-13 18:06:57,259 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:57,415 INFO L225 Difference]: With dead ends: 30323 [2025-04-13 18:06:57,416 INFO L226 Difference]: Without dead ends: 29346 [2025-04-13 18:06:57,430 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:06:57,430 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 101 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:57,430 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 20 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:06:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29346 states. [2025-04-13 18:06:58,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29346 to 26906. [2025-04-13 18:06:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26906 states, 26905 states have (on average 5.314253856160565) internal successors, (142980), 26905 states have internal predecessors, (142980), 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 18:06:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26906 states to 26906 states and 142980 transitions. [2025-04-13 18:06:58,628 INFO L79 Accepts]: Start accepts. Automaton has 26906 states and 142980 transitions. Word has length 42 [2025-04-13 18:06:58,628 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:58,628 INFO L485 AbstractCegarLoop]: Abstraction has 26906 states and 142980 transitions. [2025-04-13 18:06:58,628 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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 18:06:58,628 INFO L278 IsEmpty]: Start isEmpty. Operand 26906 states and 142980 transitions. [2025-04-13 18:06:58,700 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 18:06:58,700 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:58,701 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, 1, 1, 1, 1, 1] [2025-04-13 18:06:58,701 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 18:06:58,701 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:06:58,701 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash -426440634, now seen corresponding path program 3 times [2025-04-13 18:06:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:58,701 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469395162] [2025-04-13 18:06:58,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:06:58,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:58,710 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:06:58,720 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 40 of 42 statements. [2025-04-13 18:06:58,720 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 18:06:58,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:58,784 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 18:06:58,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:58,784 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469395162] [2025-04-13 18:06:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469395162] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:58,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:06:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219954279] [2025-04-13 18:06:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:58,784 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:06:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:58,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:06:58,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:06:58,785 INFO L87 Difference]: Start difference. First operand 26906 states and 142980 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 18:07:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:00,043 INFO L93 Difference]: Finished difference Result 34659 states and 183143 transitions. [2025-04-13 18:07:00,043 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:07:00,044 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 42 [2025-04-13 18:07:00,044 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:00,232 INFO L225 Difference]: With dead ends: 34659 [2025-04-13 18:07:00,232 INFO L226 Difference]: Without dead ends: 33543 [2025-04-13 18:07:00,245 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:07:00,246 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 84 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:00,246 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 18 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:07:00,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33543 states. [2025-04-13 18:07:01,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33543 to 27182. [2025-04-13 18:07:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27182 states, 27181 states have (on average 5.328795850042309) internal successors, (144842), 27181 states have internal predecessors, (144842), 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 18:07:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27182 states to 27182 states and 144842 transitions. [2025-04-13 18:07:01,381 INFO L79 Accepts]: Start accepts. Automaton has 27182 states and 144842 transitions. Word has length 42 [2025-04-13 18:07:01,382 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:01,382 INFO L485 AbstractCegarLoop]: Abstraction has 27182 states and 144842 transitions. [2025-04-13 18:07:01,382 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 18:07:01,382 INFO L278 IsEmpty]: Start isEmpty. Operand 27182 states and 144842 transitions. [2025-04-13 18:07:01,449 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 18:07:01,449 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:01,449 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, 1, 1, 1, 1, 1] [2025-04-13 18:07:01,449 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-13 18:07:01,449 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:07:01,450 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:01,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1453121598, now seen corresponding path program 2 times [2025-04-13 18:07:01,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:01,450 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747691662] [2025-04-13 18:07:01,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:07:01,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:01,457 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:07:01,465 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:07:01,465 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:07:01,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:01,605 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 18:07:01,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:01,605 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747691662] [2025-04-13 18:07:01,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747691662] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:01,605 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212498660] [2025-04-13 18:07:01,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:07:01,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:01,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:01,608 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 18:07:01,610 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 18:07:01,675 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-04-13 18:07:01,706 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 18:07:01,707 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:07:01,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:01,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:07:01,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:07:01,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:07:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212498660] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:01,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 18:07:01,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 12 [2025-04-13 18:07:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585015272] [2025-04-13 18:07:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:07:01,860 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 18:07:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:01,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 18:07:01,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:07:01,861 INFO L87 Difference]: Start difference. First operand 27182 states and 144842 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 18:07:03,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:03,486 INFO L93 Difference]: Finished difference Result 34570 states and 183539 transitions. [2025-04-13 18:07:03,486 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:07:03,486 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 18:07:03,486 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:03,700 INFO L225 Difference]: With dead ends: 34570 [2025-04-13 18:07:03,700 INFO L226 Difference]: Without dead ends: 33287 [2025-04-13 18:07:03,720 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:07:03,721 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 201 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:03,721 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 8 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:07:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33287 states. [2025-04-13 18:07:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33287 to 30482. [2025-04-13 18:07:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30482 states, 30481 states have (on average 5.322889668974115) internal successors, (162247), 30481 states have internal predecessors, (162247), 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 18:07:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30482 states to 30482 states and 162247 transitions. [2025-04-13 18:07:05,882 INFO L79 Accepts]: Start accepts. Automaton has 30482 states and 162247 transitions. Word has length 42 [2025-04-13 18:07:05,882 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:05,882 INFO L485 AbstractCegarLoop]: Abstraction has 30482 states and 162247 transitions. [2025-04-13 18:07:05,882 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 18:07:05,882 INFO L278 IsEmpty]: Start isEmpty. Operand 30482 states and 162247 transitions. [2025-04-13 18:07:05,992 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-13 18:07:05,993 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:05,993 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:06,000 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 18:07:06,195 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:06,197 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:07:06,197 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 786088232, now seen corresponding path program 1 times [2025-04-13 18:07:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:06,197 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375454907] [2025-04-13 18:07:06,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:07:06,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:06,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 18:07:06,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:06,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:07:06,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:07,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:07,550 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375454907] [2025-04-13 18:07:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375454907] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:07,550 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476243181] [2025-04-13 18:07:07,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:07:07,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:07,565 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 18:07:07,566 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 18:07:07,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 18:07:07,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:07,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:07:07,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:07,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:07:07,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:07,869 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 19 treesize of output 1 [2025-04-13 18:07:08,217 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 19 treesize of output 7 [2025-04-13 18:07:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:08,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:08,555 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 18:07:08,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476243181] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:08,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:08,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2025-04-13 18:07:08,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263641451] [2025-04-13 18:07:08,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:08,555 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:07:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:08,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:07:08,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:07:08,556 INFO L87 Difference]: Start difference. First operand 30482 states and 162247 transitions. Second operand has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 25 states have internal predecessors, (106), 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 18:07:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:13,866 INFO L93 Difference]: Finished difference Result 67621 states and 360455 transitions. [2025-04-13 18:07:13,867 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:07:13,867 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 25 states have internal predecessors, (106), 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 45 [2025-04-13 18:07:13,867 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:14,502 INFO L225 Difference]: With dead ends: 67621 [2025-04-13 18:07:14,503 INFO L226 Difference]: Without dead ends: 67589 [2025-04-13 18:07:14,526 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:07:14,527 INFO L437 NwaCegarLoop]: 13 mSDtfsCounter, 340 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:14,528 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 201 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-04-13 18:07:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67589 states. [2025-04-13 18:07:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67589 to 33336. [2025-04-13 18:07:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33336 states, 33335 states have (on average 5.3271336433178345) internal successors, (177580), 33335 states have internal predecessors, (177580), 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 18:07:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33336 states to 33336 states and 177580 transitions. [2025-04-13 18:07:17,834 INFO L79 Accepts]: Start accepts. Automaton has 33336 states and 177580 transitions. Word has length 45 [2025-04-13 18:07:17,840 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:17,840 INFO L485 AbstractCegarLoop]: Abstraction has 33336 states and 177580 transitions. [2025-04-13 18:07:17,840 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 25 states have internal predecessors, (106), 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 18:07:17,840 INFO L278 IsEmpty]: Start isEmpty. Operand 33336 states and 177580 transitions. [2025-04-13 18:07:17,949 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-13 18:07:17,949 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:17,949 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:17,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 18:07:18,150 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:18,150 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:07:18,151 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1762712106, now seen corresponding path program 2 times [2025-04-13 18:07:18,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:18,151 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174470256] [2025-04-13 18:07:18,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:07:18,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:18,165 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-13 18:07:18,202 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:18,202 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:07:18,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:19,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:19,773 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174470256] [2025-04-13 18:07:19,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174470256] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:19,774 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660081374] [2025-04-13 18:07:19,774 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:07:19,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:19,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:19,781 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 18:07:19,804 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 18:07:19,923 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-13 18:07:19,960 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:19,961 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:07:19,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:19,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 18:07:19,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:20,303 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 18:07:20,479 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 18:07:20,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:20,617 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:07:20,621 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 27 treesize of output 18 [2025-04-13 18:07:20,697 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 18:07:20,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660081374] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:20,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:20,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2025-04-13 18:07:20,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312068004] [2025-04-13 18:07:20,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:20,702 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:07:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:20,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:07:20,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:07:20,702 INFO L87 Difference]: Start difference. First operand 33336 states and 177580 transitions. Second operand has 25 states, 24 states have (on average 5.083333333333333) internal successors, (122), 25 states have internal predecessors, (122), 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 18:07:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:25,818 INFO L93 Difference]: Finished difference Result 61435 states and 326544 transitions. [2025-04-13 18:07:25,818 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:07:25,818 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.083333333333333) internal successors, (122), 25 states have internal predecessors, (122), 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 45 [2025-04-13 18:07:25,818 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:26,517 INFO L225 Difference]: With dead ends: 61435 [2025-04-13 18:07:26,517 INFO L226 Difference]: Without dead ends: 61348 [2025-04-13 18:07:26,538 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:07:26,540 INFO L437 NwaCegarLoop]: 16 mSDtfsCounter, 616 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:26,541 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 257 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-04-13 18:07:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61348 states. [2025-04-13 18:07:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61348 to 33094. [2025-04-13 18:07:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33094 states, 33093 states have (on average 5.333605294170972) internal successors, (176505), 33093 states have internal predecessors, (176505), 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 18:07:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33094 states to 33094 states and 176505 transitions. [2025-04-13 18:07:29,880 INFO L79 Accepts]: Start accepts. Automaton has 33094 states and 176505 transitions. Word has length 45 [2025-04-13 18:07:29,880 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:29,880 INFO L485 AbstractCegarLoop]: Abstraction has 33094 states and 176505 transitions. [2025-04-13 18:07:29,881 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.083333333333333) internal successors, (122), 25 states have internal predecessors, (122), 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 18:07:29,881 INFO L278 IsEmpty]: Start isEmpty. Operand 33094 states and 176505 transitions. [2025-04-13 18:07:29,981 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-13 18:07:29,981 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:29,981 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:29,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-13 18:07:30,185 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,SelfDestructingSolverStorable10 [2025-04-13 18:07:30,185 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:07:30,186 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash -364177756, now seen corresponding path program 3 times [2025-04-13 18:07:30,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:30,186 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468064441] [2025-04-13 18:07:30,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:07:30,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:30,204 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 2 equivalence classes. [2025-04-13 18:07:30,236 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:30,237 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:07:30,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:30,514 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 18:07:30,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:30,515 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468064441] [2025-04-13 18:07:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468064441] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:30,515 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913555340] [2025-04-13 18:07:30,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:07:30,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:30,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:30,517 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 18:07:30,518 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 18:07:30,583 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 2 equivalence classes. [2025-04-13 18:07:30,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:30,615 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:07:30,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:30,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 18:07:30,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:30,848 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 18:07:30,960 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 18:07:30,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:31,056 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:07:31,057 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 27 treesize of output 18 [2025-04-13 18:07:31,096 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 18:07:31,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913555340] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:31,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:31,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-04-13 18:07:31,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588174873] [2025-04-13 18:07:31,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:31,096 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:07:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:31,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:07:31,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:07:31,097 INFO L87 Difference]: Start difference. First operand 33094 states and 176505 transitions. Second operand has 24 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 24 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 18:07:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:37,925 INFO L93 Difference]: Finished difference Result 75675 states and 404620 transitions. [2025-04-13 18:07:37,925 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:07:37,926 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 24 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 45 [2025-04-13 18:07:37,926 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:38,506 INFO L225 Difference]: With dead ends: 75675 [2025-04-13 18:07:38,507 INFO L226 Difference]: Without dead ends: 75643 [2025-04-13 18:07:38,529 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:07:38,529 INFO L437 NwaCegarLoop]: 18 mSDtfsCounter, 1081 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:38,529 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 289 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:07:38,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75643 states. [2025-04-13 18:07:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75643 to 33014. [2025-04-13 18:07:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33014 states, 33013 states have (on average 5.336170599460819) internal successors, (176163), 33013 states have internal predecessors, (176163), 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 18:07:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33014 states to 33014 states and 176163 transitions. [2025-04-13 18:07:41,429 INFO L79 Accepts]: Start accepts. Automaton has 33014 states and 176163 transitions. Word has length 45 [2025-04-13 18:07:41,430 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:41,430 INFO L485 AbstractCegarLoop]: Abstraction has 33014 states and 176163 transitions. [2025-04-13 18:07:41,430 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 24 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 18:07:41,430 INFO L278 IsEmpty]: Start isEmpty. Operand 33014 states and 176163 transitions. [2025-04-13 18:07:41,513 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-13 18:07:41,513 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:41,513 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:41,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-13 18:07:41,713 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:41,714 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:07:41,714 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2031430752, now seen corresponding path program 4 times [2025-04-13 18:07:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:41,714 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435622582] [2025-04-13 18:07:41,714 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:07:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:41,722 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-13 18:07:41,730 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:41,730 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:07:41,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:41,998 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 18:07:41,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:41,998 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435622582] [2025-04-13 18:07:41,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435622582] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:41,998 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703150738] [2025-04-13 18:07:41,999 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:07:41,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:41,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:42,000 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 18:07:42,001 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 18:07:42,070 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-13 18:07:42,108 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:42,108 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:07:42,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:42,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 18:07:42,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:42,153 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 15 treesize of output 1 [2025-04-13 18:07:42,731 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 18:07:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:42,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:43,538 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 18:07:43,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703150738] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:43,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:43,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 22 [2025-04-13 18:07:43,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514236972] [2025-04-13 18:07:43,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:43,538 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:07:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:43,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:07:43,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:07:43,539 INFO L87 Difference]: Start difference. First operand 33014 states and 176163 transitions. Second operand has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 23 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 18:07:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:48,176 INFO L93 Difference]: Finished difference Result 38550 states and 204688 transitions. [2025-04-13 18:07:48,176 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 18:07:48,176 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 23 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 45 [2025-04-13 18:07:48,176 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:48,382 INFO L225 Difference]: With dead ends: 38550 [2025-04-13 18:07:48,382 INFO L226 Difference]: Without dead ends: 38518 [2025-04-13 18:07:48,392 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:07:48,393 INFO L437 NwaCegarLoop]: 14 mSDtfsCounter, 254 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:48,393 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 165 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:07:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38518 states. [2025-04-13 18:07:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38518 to 33118. [2025-04-13 18:07:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33118 states, 33117 states have (on average 5.33040432406317) internal successors, (176527), 33117 states have internal predecessors, (176527), 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 18:07:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33118 states to 33118 states and 176527 transitions. [2025-04-13 18:07:50,870 INFO L79 Accepts]: Start accepts. Automaton has 33118 states and 176527 transitions. Word has length 45 [2025-04-13 18:07:50,871 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:50,871 INFO L485 AbstractCegarLoop]: Abstraction has 33118 states and 176527 transitions. [2025-04-13 18:07:50,871 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 23 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 18:07:50,871 INFO L278 IsEmpty]: Start isEmpty. Operand 33118 states and 176527 transitions. [2025-04-13 18:07:50,952 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-13 18:07:50,952 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:50,952 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:50,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-13 18:07:51,153 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:51,153 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:07:51,153 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1360072833, now seen corresponding path program 1 times [2025-04-13 18:07:51,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:51,153 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617676527] [2025-04-13 18:07:51,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:07:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:51,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 18:07:51,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:51,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:07:51,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:51,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:51,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617676527] [2025-04-13 18:07:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617676527] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:51,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764127686] [2025-04-13 18:07:51,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:07:51,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:51,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:51,726 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 18:07:51,729 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 18:07:51,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 18:07:51,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:07:51,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:07:51,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:51,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:07:51,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:51,853 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 19 treesize of output 1 [2025-04-13 18:07:52,105 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 19 treesize of output 7 [2025-04-13 18:07:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:52,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:52,282 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 18:07:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764127686] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:52,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 26 [2025-04-13 18:07:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611945453] [2025-04-13 18:07:52,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:52,283 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 18:07:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:52,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 18:07:52,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:07:52,286 INFO L87 Difference]: Start difference. First operand 33118 states and 176527 transitions. Second operand has 27 states, 26 states have (on average 4.615384615384615) internal successors, (120), 27 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 18:08:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:08:02,139 INFO L93 Difference]: Finished difference Result 68283 states and 361389 transitions. [2025-04-13 18:08:02,139 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:08:02,139 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.615384615384615) internal successors, (120), 27 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 45 [2025-04-13 18:08:02,139 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:08:02,651 INFO L225 Difference]: With dead ends: 68283 [2025-04-13 18:08:02,652 INFO L226 Difference]: Without dead ends: 68251 [2025-04-13 18:08:02,679 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2025-04-13 18:08:02,680 INFO L437 NwaCegarLoop]: 18 mSDtfsCounter, 721 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 4052 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 4103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:08:02,681 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 339 Invalid, 4103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4052 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-04-13 18:08:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68251 states. [2025-04-13 18:08:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68251 to 35042. [2025-04-13 18:08:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35042 states, 35041 states have (on average 5.336634228475215) internal successors, (187001), 35041 states have internal predecessors, (187001), 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 18:08:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35042 states to 35042 states and 187001 transitions. [2025-04-13 18:08:07,131 INFO L79 Accepts]: Start accepts. Automaton has 35042 states and 187001 transitions. Word has length 45 [2025-04-13 18:08:07,131 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:08:07,131 INFO L485 AbstractCegarLoop]: Abstraction has 35042 states and 187001 transitions. [2025-04-13 18:08:07,131 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.615384615384615) internal successors, (120), 27 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 18:08:07,131 INFO L278 IsEmpty]: Start isEmpty. Operand 35042 states and 187001 transitions. [2025-04-13 18:08:07,228 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-13 18:08:07,229 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:08:07,229 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:08:07,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-13 18:08:07,431 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,SelfDestructingSolverStorable13 [2025-04-13 18:08:07,431 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 18:08:07,433 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:08:07,433 INFO L85 PathProgramCache]: Analyzing trace with hash 436175413, now seen corresponding path program 2 times [2025-04-13 18:08:07,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:08:07,433 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775374635] [2025-04-13 18:08:07,433 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:08:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:08:07,445 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-13 18:08:07,460 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:08:07,461 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:08:07,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:07,706 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 18:08:07,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:08:07,706 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775374635] [2025-04-13 18:08:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775374635] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:08:07,706 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100701372] [2025-04-13 18:08:07,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:08:07,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:07,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:08:07,708 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 18:08:07,710 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 18:08:07,786 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-13 18:08:07,817 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 18:08:07,818 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:08:07,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:07,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 18:08:07,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:08:08,103 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 18:08:08,151 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 18:08:08,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:08:08,252 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:08:08,252 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 27 treesize of output 18 [2025-04-13 18:08:08,288 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 18:08:08,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100701372] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:08:08,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:08:08,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-04-13 18:08:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076634873] [2025-04-13 18:08:08,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:08:08,288 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:08:08,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:08:08,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:08:08,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:08:08,289 INFO L87 Difference]: Start difference. First operand 35042 states and 187001 transitions. Second operand has 24 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 24 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)